CT5.

241
CT-Series 3-PHASE, 24V, 5A, 120W

POWER SUPPLY
 AC 380-480V Wide-range Input
 Input Fuses Already Included
 Requires only Two Legs of a 3-Phase System
 Width only 40mm
 Efficiency up to 90.4%
 20% Output Power Reserves (PowerBoost)
 Input -Transient Blanking Circuit Included
 Minimal Inrush Current Surge
 Full Power Between -25°C and +60°C
 3 Year Warranty

PRODUCT DESCRIPTION SHORT-FORM DATA

The Dimension CT-Series are cost optimized power Output voltage DC 24V Nominal
supplies without compromising quality, reliability and Adjustment range 24 - 28V Factory setting 24.1V
performance. The CT-Series is part of the DIMENSION Output current 5.0 – 4.3A Up to +60°C ambient
power supply family. The most outstanding features of 3.8 – 3.2A At +70°C ambient
CT5.241 are the high efficiency, electronic inrush current Derate linearly between +45°C and +70°C
limitation, active input transient filter and wide PowerBoost 6.0A Up to +45°C ambient
operational temperature range, the small size and other Linear decrease to nominal power
technological design concepts. between +45°C and +60°C
Input voltage AC AC 380-480V -15%/+20%
The CT-Series includes all the essential basic functions.
Mains frequency 50-60Hz ±6%
The devices also offer PowerBoost: Power reserves of
Input current AC 0.75 / 0.68A At 400 / 480Vac
20%, which may even be used continuously at
Power factor 0.45 / 0.43 At 400 / 480Vac
temperatures up to +45°C. The CT5.241 utilizes only 2
AC Inrush current 4 / 4Apk At 400 / 480Vac
legs of a 3-phase system which saves wiring and
Efficiency 90.4 / 90.0% At 400 / 480Vac
installation costs. Furthermore, this allows a smaller unit
Losses 12.7 / 13.3W At 400 / 480Vac
without compromising the size of the terminals. Due to
Hold-up time 40 / 60ms At 400 / 480Vac
the low power consumption, an unbalancing of the
Temperature range -25°C to +70°C
individual phases is not expected.
Size (WxHxD) 40x124x117mm Without DIN rail
Weight 500g

ORDER NUMBERS MAIN APPROVALS

For details or a complete approval list see chapter 18.
Power Supply CT5.241

Accessory ZM1.WALL Wall/panel mount bracket

ZM12.SIDE Side mount bracket
UL 508 UL 60950-1 Class I Div 2

Marine Marine

Aug. 2022 / Rev. 2.2 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted. 1/2
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 CT5.241
CT-Series 3-PHASE, 24V, 5A, 120W

INDEX
Page Page
1. Intended Use .......................................................3 18. Approved, Fulfilled or Tested Standards ......... 18
2. Installation Instructions ......................................3 19. Regulatory Product Compliance ...................... 19
3. AC-Input...............................................................5 20. Physical Dimensions and Weight ..................... 20
4. DC-Input...............................................................6 21. Accessories ........................................................ 21
5. Input Inrush Current ...........................................6 21.1. ZM1.WALL - Wall/Panel Mount Bracket .. 21
6. Output .................................................................7 21.2. ZM12.SIDE - Side Mount Bracket ............. 22
7. Hold-up Time .......................................................9 21.3. YRM2.DIODE - Redundancy Modules ...... 23
8. Efficiency and Power Losses..............................10 21.4. YR20.246 - Redundancy Module .............. 23
9. Functional Diagram ...........................................11 22. Application Notes ............................................. 24
10. Front Side and User Elements ...........................11 22.1. Peak Current Capability ........................... 24
11. Connection Terminals .......................................12 22.2. Charging of Batteries ............................... 25
12. Lifetime Expectancy ..........................................13 22.3. Series Operation ....................................... 26
13. MTBF ..................................................................13 22.4. Parallel Use to Increase Output Power .... 26
14. EMC ....................................................................14 22.5. Parallel Use for Redundancy .................... 27
15. Environment ......................................................15 22.6. Use in a Tightly Sealed Enclosure ............ 28
16. Safety and Protection Features ........................16 22.7. Mounting Orientations ............................ 29
17. Dielectric Strength ............................................17

The information given in this document is correct to the best of our knowledge and experience at the time of
publication. If not expressly agreed otherwise, this information does not represent a warranty in the legal sense of the
word. As the state of our knowledge and experience is constantly changing, the information in this data sheet is
subject to revision. We therefore kindly ask you to always use the latest issue of this document (available under
www.pulspower.com).
No part of this document may be reproduced or utilized in any form without our prior permission in writing.

TERMINOLOGY AND ABBREVIATIONS

PE and symbol PE is the abbreviation for Protective Earth and has the same meaning as the symbol .
Earth, Ground This document uses the term “earth” which is the same as the U.S. term “ground”.
t.b.d. To be defined, value or description will follow later.
AC 400V A figure displayed with the AC or DC before the value represents a nominal voltage with
standard tolerances (usually ±15%) included.
E.g.: DC 12V describes a 12V battery disregarding whether it is full (13.7V) or flat (10V)
400Vac A figure with the unit (Vac) at the end is a momentary figure without any additional
tolerances included.
50Hz vs. 60Hz As long as not otherwise stated, AC 380V and AC 400V parameters are valid at 50Hz and AC
480V parameters are valid at 60Hz mains frequency.
may A key word indicating flexibility of choice with no implied preference.
shall A key word indicating a mandatory requirement.
should A key word indicating flexibility of choice with a strongly preferred implementation.

Aug. 2022 / Rev. 2.2 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted. 2/3
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 CT5.241
CT-Series 3-PHASE, 24V, 5A, 120W

1. INTENDED USE
This device is designed for installation in an enclosure and is intended for commercial use, such as in industrial control,
process control, monitoring and measurement equipment or the like.
Do not use this device in equipment, where malfunctioning may cause severe personal injury or threaten human life
without additional appropriate safety devices, that are suited for the end-application.
If this device is used in a manner outside of its specification, the protection provided by the device may be impaired.

2. INSTALLATION INSTRUCTIONS

WARNING Risk of electrical shock, fire, personal injury or death.

- Turn power off before working on the device and protect against inadvertent re-powering.
- Do not open, modify or repair the device.
- Use caution to prevent any foreign objects from entering into the housing.
- Do not use in wet locations or in areas where moisture or condensation can be expected.
- Do not touch during power-on, and immediately after power-off. Hot surface may cause burns.

Obey the following installation instructions:

This device may only be installed and put into operation by qualified personnel.
This device does not contain serviceable parts. The tripping of an internal fuse is caused by an internal defect.
If damage or malfunction should occur during installation or operation, immediately turn power off and send unit to
the factory for inspection.
Install device in an enclosure providing protection against electrical, mechanical and fire hazards.
Install the device onto a DIN rail according to EN 60715 with the input terminals on the bottom of the device. Other
mounting orientations require a reduction in output current.
Make sure that the wiring is correct by following all local and national codes. Use appropriate copper cables that are
designed for a minimum operating temperature of 60°C for ambient temperatures up to +45°C, 75°C for ambient
temperatures up to +60°C and 90°C for ambient temperatures up to +70°C.
Ensure that all strands of a stranded wire enter the terminal connection. Use ferrules for wires on the input terminals.
Unused screw terminals should be securely tightened.
The device is designed for pollution degree 2 areas in controlled environments. No condensation or frost is allowed.
The enclosure of the device provides a degree of protection of IP20. The housing does not provide protection against
spilled liquids.
The device is designed for overvoltage category II zones. Below 2000m altitude the device is tested for impulse
withstand voltages up to 4kV, which corresponds to OVC III according to IEC 60664-1.
The device is designed as “Class of Protection I” equipment according to IEC 61140. Do not use without a proper PE
(Protective Earth) connection.
The device is suitable to be supplied from TN, TT or IT mains networks. The continuous voltage between the input
terminals and the PE potential must not exceed 500Vac. Corner grounded delta systems are allowed.
A disconnecting means shall be provided for the input of the device.
The device is designed for convection cooling and does not require an external fan. Do not obstruct airflow and do not
cover ventilation grid!
The device is designed for altitudes up to 5000m. Above 2000m a reduction in output current is required.
Keep the following minimum installation clearances: 40mm on top, 20mm on the bottom, 5mm left and right side.
Increase the 5mm to 15mm in case the adjacent device is a heat source. When the device is permanently loaded with
less than 50%, the 5mm can be reduced to zero.

Aug. 2022 / Rev. 2.2 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted. 3/4
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 CT5.241
CT-Series 3-PHASE, 24V, 5A, 120W

The device is designed, tested and approved for branch circuits up to 32A (IEC) and 30A (UL) without additional
protection device. If an external fuse is utilized, do not use circuit breakers smaller than 6A B- or 3A C-Characteristic to
avoid a nuisance tripping of the circuit breaker.
The maximum surrounding air temperature is +70°C. The operational temperature is the same as the ambient or
surrounding air temperature and is defined 2cm below the device.
The device is designed to operate in areas between 5% and 95% relative humidity.

Installation Instructions for Hazardous Location Areas

The device is suitable for use in Class I Division 2 Groups A, B, C, D locations.

WARNING EXPLOSION HAZARDS!

Substitution of components may impair suitability for this environment.
Do not disconnect the device or operate the voltage adjustment unless power has been switched off or the area is
known to be non-hazardous.

Aug. 2022 / Rev. 2.2 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted. 4/5
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 CT5.241
CT-Series 3-PHASE, 24V, 5A, 120W

3. AC-INPUT
The device is suitable to be supplied from TN-, TT- and IT mains networks with AC voltage. Grounding of one phase is
allowed except for UL508 applications.

AC input Nom. AC 380-480V

AC input range 323-576Va
576-700Vac For maximal 1s (occasional)
Allowed voltage L or N to earth Max. 500Vac Continuous operation, according to IEC 62477-1
Input frequency Nom. 50–60Hz ±6%
Turn-on voltage Typ. 270Vac Load independent, steady-state value, see Fig. 3-1
Shut-down voltage Typ. 185Vac At no load
Typ. 215Vac At 24V, 2.5A
Typ. 225Vac At 24V, 5A
External input protection See recommendations in chapter 2.

AC 400V AC 480V
Input current Typ. 0.75A 0.68A At 24V, 5A, see Fig. 3-3
Power factor Typ. 0.45 0.43 At 24V, 5A, see Fig. 3-4
Start-up delay Typ. 75ms 75ms See Fig. 3-2
Rise time Typ. 35ms 36ms At 24V, 5A constant current load, 0mF load
capacitance, see Fig. 3-2
Typ. 64ms 68ms At 24V, 5A constant current load, 5mF load
capacitance, see Fig. 3-2
Turn-on overshoot Max. 200mV 200mV See Fig. 3-2

Fig. 3-1 Input voltage range Fig. 3-2 Turn-on behavior, definitions

POUT Rated input < 1s

range Input
Voltage
Shut-down

Turn-on

Output - 5%
Overshoot

Voltage
VIN
Start-up Rise
delay Time
185V 260V 323V 576V 700Vac

Fig. 3-3 Input current vs. output load at 24V Fig. 3-4 Power factor vs. output load

Input Current, typ. Power Factor, typ.

0.8A ac 0.50
0V
0.7 40 ac
0.6 8 0V 0.45 400Vac
4
0.5 480Vac
0.4 0.40
0.3
0.2 0.35
0.1
Output Current Output Current
0 0.30
0 1 2 3 4 5 6A 0 1 2 3 4 5 6A

Aug. 2022 / Rev. 2.2 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted. 5/6
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 CT5.241
CT-Series 3-PHASE, 24V, 5A, 120W

4. DC-INPUT
Do not use the power supply with DC-input voltages.

5. INPUT INRUSH CURRENT

An active inrush limitation circuit limits the input inrush current after turn-on of the input voltage and after short
input voltage interruptions.
The charging current into EMI suppression capacitors is disregarded in the first microseconds after switch-on.

AC 400V AC 480V
Inrush current Max. 10Apeak 10Apeak Temperature independent
Typ. 4Apeak 4Apeak Temperature independent
Inrush energy Max. 0.5A2s 0.5A2s Temperature independent

Fig. 5-1 Typical input inrush current

behaviour at nominal load and 25°C ambient

Input current 2A/DIV

1>
1

Input voltage 500V/DIV

3>
3

Output voltage

20ms/DIV
2>
2

Aug. 2022 / Rev. 2.2 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted. 6/7
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 CT5.241
CT-Series 3-PHASE, 24V, 5A, 120W

6. OUTPUT
The output provides a SELV/PELV rated voltage, which is galvanically isolated from the input voltage.
The device is designed to supply any kind of loads, including unlimited capacitive and inductive loads.
The output is electronically protected against overload, no-load and short-circuits. In case of a protection event,
audible noise may occur.

Output voltage Nom. 24V

Adjustment range 24-28V Guaranteed value
Max. 30V This is the maximum output voltage which can
occur at the clockwise end position of the
potentiometer due to tolerances. It is not a
guaranteed value which can be achieved.
Factory setting output voltage Typ. 24.1V ±0.2% at full load, cold unit
Line regulation Max. 10mV Between 323 and 576Vac input voltage change
Load regulation Max. 100mV Between 0 and 5A in “single use” mode, static value
Ripple and noise voltage Max. 50mVpp Bandwidth 20Hz to 20MHz, 50Ohm
Output current Nom. 5.0A At 24V and up to +60°C ambient temperature, see
Fig. 6-1
Nom. 3.75A At 24V and 70°C ambient temperature, see Fig. 15-1
Nom. 4.3A At 28V and up to +60°C ambient temperature, see
Fig. 6-1
Nom. 3.2A At 28V and 70°C ambient temperature, see Fig. 15-2
Derate linearly between +60°C and +70°C, see chapter 15
PowerBoost1) Nom. 6.0A At 24V and up to +45°C ambient temperature, see
Fig. 15-3
Nom. 5.1A At 28V and up to +45°C ambient temperature, see
Fig. 15-4
PowerBoost decreases linearly to nominal power between+45°C and+60°C, see
chapter 15
Overload behavior Continuous current See Fig. 6-1
Overload/ short-circuit current Max. 13A Continuous current, see Fig. 6-1
Output capacitance Typ. 3 800µF Included inside the power supply
Back-feeding loads Max. 35V The unit is resistant and does not show
malfunctioning when a load feeds back voltage to
the power supply. It does not matter whether the
power supply is on or off. The absorbing energy can
be calculated according to the built-in large sized
output capacitor.
1)
PowerBoost
This power/current is continuously allowed up to an ambient temperature of +45°C.
Above +45°C, do not use this power/current longer than a duty cycle of 10% and/or not longer than 1 minute every 10 minutes

Fig. 6-5 Output voltage vs. output current,

typ.

Aug. 2022 / Rev. 2.2 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted. 7/8
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 CT5.241
CT-Series 3-PHASE, 24V, 5A, 120W

Output Voltage
Adjustment
28V Range
24
20
16
12
8
4
Output Current
0
0 2 4 6 8 10 12A

Aug. 2022 / Rev. 2.2 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted. 8/9
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 CT5.241
CT-Series 3-PHASE, 24V, 5A, 120W

7. HOLD-UP TIME
AC 400V AC 480V
Hold-up Time Typ. 40ms 60ms At 24V, 5A, see Fig. 7-1
Typ. 82ms 124ms At 24V, 2.5A, see Fig. 7-1
Min 33ms 49ms At 24V, 5A, see Fig. 7-1
Min. 67ms 101ms At 24V, 2.5A, see Fig. 7-1

Fig. 7-1 Hold-up time vs. input voltage Fig. 7-2 Shut-down behavior, definitions

Hold-up Time at 24Vdc

A L1 L2 L3
100ms B
A... Typ. at 2.5A
B... Min. at 2.5A Input
C... Typ. at 5A
75 D... Min. at 5A Voltage
C
50 D
- 5%
Output
25 Voltage
Input Voltage Hold-up Time
0
320 360 400 440 480Vac

Aug. 2022 / Rev. 2.2 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted. 9/10
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 CT5.241
CT-Series 3-PHASE, 24V, 5A, 120W

8. EFFICIENCY AND POWER LOSSES

AC 400V AC 480V
Efficiency Typ. 90.4% 90.0% At 24V, 5A
Average efficiency *) Typ. 88.8% 87.9% 25% at 1.25A, 25% at 2.5A, 25% at 3.75A.
25% at 5A
Power losses Typ. 1.5W 1.6W At 0A
Typ. 7.5W 7.7W At 24V, 2.5A
Typ. 12.7W 13.3W At 24V, 5A
Typ. 15.3W 15.8W At 24V, 6A (PowerBoost)
*) The average efficiency is an assumption for a typical application where the power supply is loaded with 25% of the nominal load for 25%
of the time, 50% of the nominal load for another 25% of the time, 75% of the nominal load for another 25% of the time and with 100%
of the nominal load for the rest of the time.

Fig. 8-1 Efficiency vs. output current at 24V, Fig. 8-2 Losses vs. output current at 24V,
typ. typ.
Efficiency Power Losses
91% 18W
400Vac
90 15
480Vac 480Vac
89 12
88 9 400Vac
87 6
86 3
Output Current Output Current
85 0
1 2 3 4 5 6A 0 1 2 3 4 5 6A

Fig. 8-3 Efficiency vs. input voltage at 24V, Fig. 8-4 Losses vs. input voltage at 24V, 5A,
5A, typ. typ.
Efficiency Power Losses
91% 18W
90.5 15
90.0 12
89.5 9
89.0 6
88.5 3
Input Voltage Vac Input Voltage Vac
88.0 o
320 360 400 440 480 520 560 320 360 400 440 480 520 560

Aug. 2022 / Rev. 2.2 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted. 10/11
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 CT5.241
CT-Series 3-PHASE, 24V, 5A, 120W

9. FUNCTIONAL DIAGRAM
Fig. 9-1 Functional diagram

PFC
L1 Input Fuses
Inductor
+
L2 Input Filter Inrush Power
Converter
Output +
Limiter Filter
Input
Rectifier Transient -
Filter
-

Output VOUT
Temper- Output Output Voltage
ature Power Over- Regulator
Shut- Manager Voltage DC-ok
down Protection LED

10. FRONT SIDE AND USER ELEMENTS

Fig. 10-1 Front side

A Output Terminals
+ Positive output (two identical + poles)
– Negative/ return output (two identical - poles)

B Input Terminals
L1, L2 Line input
PE (Protective Earth) input

C Output voltage potentiometer

Open the flap to adjust the output voltage. The factory setting is 24.1V

D DC-OK LED (green)

On, when the output voltage is above 21V.

Aug. 2022 / Rev. 2.2 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted. 11/12
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 CT5.241
CT-Series 3-PHASE, 24V, 5A, 120W

11. CONNECTION TERMINALS

The terminals are IP20 Finger safe constructed and suitable for field- and factory wiring.

Input Output
Type Screw Terminal Screw Terminal
Solid wire Max. 6mm2 Max. 6mm2
Stranded wire Max. 4mm2 Max. 4mm2
American Wire Gauge AWG 20-10 AWG 20-10
Max. wire diameter (including ferrules) 2.8mm 2.8mm
Recommended tightening torque 1Nm 1Nm
Wire stripping length 7mm 7mm
Screwdriver 3.5mm slotted or Phillips No 1 3.5mm slotted or Phillips No 1

Daisy chaining:
Daisy chaining (jumping from one power supply output to the next) is allowed as long as the average output current
through one terminal pin does not exceed 25A. If the current is higher, use a separate distribution terminal block as
shown in Fig. 11-2.
Fig. 11-1 Daisy chaining of outputs Fig. 11-2 Using distribution terminals

Distribution
Power Power Terminals
Supply Supply Power Power
Supply Supply
+ + - - + + - - Load
+ + - - + + - - Load
Output Output + -
Output Output + -

max 25A!
continuous

Aug. 2022 / Rev. 2.2 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted. 12/13
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 CT5.241
CT-Series 3-PHASE, 24V, 5A, 120W

12. LIFETIME EXPECTANCY

The Lifetime expectancy shown in the table indicates the minimum operating hours (service life) and is determined by
the lifetime expectancy of the built-in electrolytic capacitors. Lifetime expectancy is specified in operational hours and
is calculated according to the capacitor’s manufacturer specification. The manufacturer of the electrolytic capacitors
only guarantees a maximum life of up to 15 years (131 400h). Any number exceeding this value is a calculated
theoretical lifetime which can be used to compare devices.
The Lifetime expectancy shown in the table indicates the minimum operating hours (service life) and is determined by
the lifetime expectancy of the built-in electrolytic capacitors. Lifetime expectancy is specified in operational hours and
is calculated according to the capacitor’s manufacturer specification. The manufacturer of the electrolytic capacitors
only guarantees a maximum life of up to 15 years (131 400h). Any number exceeding this value is a calculated
theoretical lifetime which can be used to compare devices.

AC 400V AC 480V
Lifetime expectancy 92 000h 92 000h At 24V, 5A and 40°C
186 000h 175 000h At 24V, 2.5A and 40°C
72 000h 73 000h At 24V, 6A and 40°C
260 000h 260 000h At 24V, 5A and 25°C
526 000h 495 000h At 24V, 2.5A and 25°C
204 000h 207 000h At 24V, 6A and 25°C

13. MTBF
MTBF stands for Mean Time Between Failure, which is calculated according to statistical device failures, and indicates
reliability of a device. It is the statistical representation of the likelihood of a unit to fail and does not necessarily
represent the life of a product.
The MTBF figure is a statistical representation of the likelihood of a device to fail. A MTBF figure of e.g. 1 000 000h
means that statistically one unit will fail every 100 hours if 10 000 units are installed in the field. However, it can not
be determined if the failed unit has been running for 50 000h or only for 100h.
For these types of units the MTTF (Mean Time To Failure) value is the same value as the MTBF value.

AC 400V AC 480V
MTBF SN 29500, IEC 61709 1 172 000h 1 155 000h At 24V, 5A and 40°C
2 105 000h 2 074 000h At 24V, 5A and 25°C
MTBF MIL HDBK 217F 454 000h 445 000h At 24V, 5A and 40°C, Ground Benign GB40
607 000h 593 000h At 24V, 5A and 25°C, Ground Benign GB25
101 000h 99 000h At 24V, 5A and 40°C, Ground Fixed GF40
134 000h 131 000h At 24V, 5A and 25°C, Ground Fixed GF25

Aug. 2022 / Rev. 2.2 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted. 13/14
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 CT5.241
CT-Series 3-PHASE, 24V, 5A, 120W

14. EMC
The EMC behavior of the device is designed for applications in industrial environment as well as in residential,
commercial and light industry environments. The output is allowed to be grounded or floating.
The device is investigated according to the generic standards EN 61000-6-1, EN 61000-6-2, EN 61000-6-3 and EN 61000-
6-4.
EMC Immunity
Electrostatic discharge EN 61000-4-2 Contact discharge 8kV Criterion A
Air discharge 15kV Criterion A
Electromagnetic RF field EN 61000-4-3 80MHz-2.7GHz 10V/m Criterion A
Fast transients (Burst) EN 61000-4-4 Input lines 4kV Criterion A
Output lines 2kV Criterion A
Surge voltage on input EN 61000-4-5 L1  L2 2kV Criterion A
L1  PE, L2  PE 4kV Criterion A
Surge voltage on output EN 61000-4-5 +- 500V Criterion A
+ / -  PE 1kV Criterion A
Conducted disturbance EN 61000-4-6 0.15-80MHz 10V Criterion A
Mains voltage dips EN 61000-4-11 0% of 380Vac 0Vac, 20ms Criterion A
0% of 480Vac 0Vac, 20ms Criterion A
Mains voltage dips EN 61000-4-11 40% of 380Vac 200ms Criterion C
40% of 480Vac 200ms Criterion C
70% of 380Vac 500ms Criterion A
70% of 480Vac 500ms Criterion A
Voltage interruptions EN 61000-4-11 5s Criterion C
Powerful transients VDE 0160 over entire load range 1550V, 1.3ms Criterion A
Criterions:
A: The device shows normal operation behavior within the defined limits.
C: Temporary loss of function is possible. The device may shut down and restarts by itself. No damage or hazards for the device will occur.

EMC Emission
Conducted emission EN 55011, EN 55032, FCC Part 15, CISPR 11, CISPR 32 Class B
input lines
Conducted emission IEC/CISPR 16-1-2, IEC/CISPR 16-2-1 Limits for local DC power
output lines networks fulfilled
Radiated emission EN 55011, EN 55032 Class B
Harmonic input current EN 61000-3-2 Fulfilled for Class A equipment
Voltage fluctuations, flicker EN 61000-3-3 Fulfilled, tested with constant
current loads, non pulsing
This device complies with FCC Part 15 rules.
Operation is subjected to following two conditions: (1) this device may not cause harmful interference, and (2) this
device must accept any interference received, including interference that may cause undesired operation.

Switching Frequency
Main converter 45kHz to 170kHz Output load and input voltage dependent

Aug. 2022 / Rev. 2.2 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted. 14/15
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 CT5.241
CT-Series 3-PHASE, 24V, 5A, 120W

15. ENVIRONMENT
Operational temperature -25°C to +70°C The operational temperature is the ambient or
surrounding temperature and is defined as the
air temperature 2cm below the device.
Storage temperature -40°C to +85°C For storage and transportation
Output derating 3W/K Between +60°C and +70°C
7.5W/1000m or 5K/1000m For altitudes >2000m, see Fig. 15-2
4.5W/-5kPa or 3K/-5kPa For atmospheric pressures <80kPa, see Fig. 15-2
The derating is not hardware controlled. The customer has to take care by himself to
stay below the derated current limits in order not to overload the unit.
Humidity 5 to 95% r.h. According to IEC 60068-2-30
Atmospheric pressure 110-47kPa See Fig. 15-2 for details
Altitude Up to 6000m See Fig. 15-2 for details
Over-voltage category III According to IEC 60664-1 for altitudes up to
2000m
II According to IEC 60664-1 for altitudes from
2000 to 6000m and atmospheric pressures
from 80 to 47kPa
Degree of pollution 2 According to IEC 62477-1, not conductive
Vibration sinusoidal 2-17.8Hz: ±1.6mm; According to IEC 60068-2-6
17.8-500Hz: 2g
2 hours / axis
Shock 30g 6ms, 20g 11ms According to IEC 60068-2-27
3 bumps / direction, 18 bumps in total
Shock and vibration is tested in combination with DIN rails according to EN 60715 with a
height of 15mm and a thickness of 1.3mm and standard orientation.
Audible noise Some audible noise may be emitted from the power supply during no load, overload or
short circuit.

Fig. 15-1 Output current vs. ambient temp. Fig. 15-2 Output current vs. altitude at 24V
(Inom = 5A; Iout with PowerBoost = 6A)

Allowed Output Current at 24V

Allowed Output Current at 24V
6A C
6A B
B
A 5A
5A A
4A
4A
A... Continuous 3A
3A B... Short term A... Ambient < 60°C
2A B... Ambient < 45°C
2A C... Short term
1A
1A
Ambient Temperature
0 Altitude 0m 2000m 4000m 6000m
-25 0 20 40 60 70°C AP*) 110kPa 80kPa 62kPa 47kPa
*) Atmospheric pressure

Aug. 2022 / Rev. 2.2 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted. 15/16
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 CT5.241
CT-Series 3-PHASE, 24V, 5A, 120W

16. SAFETY AND PROTECTION FEATURES

Isolation resistance Min. 500MOhm At delivered condition between input and output,
measured with 500Vdc
Min. 500MOhm At delivered condition between input and PE,
measured with 500Vdc
Min. 500MOhm At delivered condition between output and PE,
measured with 500Vdc
Min. 500MOhm At delivered condition between output and DC-OK
contacts, measured with 500Vdc
PE resistance Max. 0.1Ohm Resistance between PE terminal and the housing in
the area of the DIN rail mounting bracket.
Output over-voltage protection Typ. 30.5Vdc
Max. 32Vdc
In case of an internal defect, a redundant circuit limits the maximum
output voltage. The output shuts down and automatically attempts to
restart.
Class of protection I According to IEC 61140
A PE (Protective Earth) connection is required
Degree of protection IP 20 According to EN/IEC 60529
Over-temperature protection Included Output shuts down with automatic restart.
Temperature sensors are installed on critical
components inside the unit and turn the unit off in
safety critical situations, which can happen e.g.
when ambient temperature is too high, ventilation
is obstructed or the derating requirements are not
followed. There is no correlation between the
operating temperature and turn-off temperature
since this is dependent on input voltage, load and
installation methods.
Input transient protection MOV (Metal For protection values see chapter 14 (EMC).
Oxide Varistor)
Internal input fuse Included Not user replaceable slow-blow high-braking
capacity fuse
Touch current (leakage current) Typ. 0.14mA At 400Vac, 50Hz, TN-,TT-mains
Typ. 0.19mA At 480Vac, 60Hz, TN-,TT-mains
Max. 0.18mA At 440Vac, 60Hz, TN-,TT-mains
Max. 0.25mA At 528Vac, 50Hz, TN-,TT-mains

Aug. 2022 / Rev. 2.2 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted. 16/17
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 CT5.241
CT-Series 3-PHASE, 24V, 5A, 120W

17. DIELECTRIC STRENGTH

The output voltage is floating and has no ohmic connection to the ground.
The output is insulated to the input by a double or reinforced insulation.
Type and routine tests are conducted by the manufacturer. Field tests may be conducted in the field using the
appropriate test equipment which applies the voltage with a slow ramp (2s up and 2s down). Connect all input-
terminals together as well as all output poles before conducting the test. When testing, set the cut-off current settings
to the value in the table below.

Fig. 17-1 Dielectric strength A B C

Type test 60s 2500Vac 3000Vac 500Vac
Input
Routine test 5s 2500Vac 2500Vac 500Vac
L1
L2 Field test 5s 2000Vac 2000Vac 500Vac
B
Output Cut-off current setting > 5mA > 5mA > 15mA
A +
It is recommend that either the + pole, the – pole or any other part
C -
of the output circuit shall be connected to the earth/ground
Earth
system. This helps to avoid situations in which a load starts
unexpectedly or can not be switched off when unnoticed earth
faults occur.

Aug. 2022 / Rev. 2.2 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted. 17/18
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 CT5.241
CT-Series 3-PHASE, 24V, 5A, 120W

18. APPROVED, FULFILLED OR TESTED STANDARDS

UL 508 UL Certificate
Listed equipment for category NMTR - Industrial Control
Equipment
Applicable for US and Canada
E-File: E198865
IEC 61010-2-201 Manufacturer's Declaration
Electrical Equipment for Measurement, Control and Laboratory
Use - Particular requirements for control equipment
IEC 60950-1 CB Scheme Certificate
General safety requirements for Information Technology
Equipment (ITE)
UL 60950-1 UL Certificate
Recognized component for category QQGQ - Information
Technology Equipment (ITE)
Applicable for US and Canada
E-File: E137006
Class I Div 2 CSA Certificate
Power Supplies for Hazardous Location
Applicable for Canada and US
CSA Class: 5318-01 (Canada), 5318-81 (USA)
Temperature Code: T4
Groups: A, B, C and D
Marine (DNV) DNV Certificate
DNV Type approved product
Certificate: TAA00002YX
Temperature: Class D
Humidity: Class B
Vibration: Class C
EMC: Class B
Enclosure: Class A
Marine (ABS) ABS Design Assessment Certificate
ABS (American Bureau of Shipment) assessed product
Certificate: 17-HG1599236-PD
VDMA 24364 Paint Wetting Impairment Substances Test (or LABS-Test)
Tested for Zone 2 and test class C1 according to VDMA 24364-
C1-L/W for solvents and water-based paints

Aug. 2022 / Rev. 2.2 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted. 18/19
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 CT5.241
CT-Series 3-PHASE, 24V, 5A, 120W

19. REGULATORY PRODUCT COMPLIANCE

EU Declaration of The CE mark indicates conformance with the
Conformity - EMC directive
- Low-voltage directive
- RoHS directive
REACH Regulation (EU) Manufacturer's Declaration
EU regulation regarding the Registration, Evaluation,
Authorisation and Restriction of Chemicals (REACH) fulfilled.
EU Regulation (EC) 1907/2006.
WEEE Directive Manufacturer's Statement
(2012/19/EU) EU-Directive on Waste Electrical and Electronic Equipment
(WEEE)
Registered in Germany as business to business (B2B) products.
WEEE-Reg.-Nr. DE 55837529
KC Korean Certificate KC Korean Certification
Korean - Registration of Broadcasting and Communication
Equipment
Registered under Clause3, Article 58-2 of Radio Waves Act.
Registration No. R-R-PUG-CT5_241

Aug. 2022 / Rev. 2.2 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted. 19/20
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 CT5.241
CT-Series 3-PHASE, 24V, 5A, 120W

20. PHYSICAL DIMENSIONS AND WEIGHT

Width 40mm
Height 124mm
Depth 117mm
The DIN rail depth must be added to the unit depth to calculate the total required
installation depth.
Weight 500g
DIN rail Use 35mm DIN rails according to EN 60715 or EN 50022 with a height of 7.5 or 15mm.
Housing material Body: Aluminium alloy
Cover: Zinc-plated steel
Installation clearances See chapter 2
Penetration protection Small parts like screws, nuts, etc. with a diameter larger than 3.5mm

Fig. 20-1 Front view Fig. 20-2 Side view

All dimensions in mm
All dimensions in mm

Aug. 2022 / Rev. 2.2 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted. 20/21
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 CT5.241
CT-Series 3-PHASE, 24V, 5A, 120W

21. ACCESSORIES

21.1. ZM1.WALL - WALL/PANEL MOUNT BRACKET

These brackets are used to mount the device on a flat surface or panel without utilizing a DIN rail.
The two aluminum brackets and the black plastic slider of the unit have to be detached, so that the steel brackets can
be mounted in the holes of the aluminum brackets.
The order number ZM1.WALL contains two brackets needed for one device.

Fig. 21-1 ZM1.Wall Fig. 21-2 Hole pattern Fig. 21-3 Side view

All dimensions in mm
All dimensions in mm

Fig. 21-4 Isometric view- Fig. 21-5 Isometric view Fig. 21-6 Isometric view

Aug. 2022 / Rev. 2.2 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted. 21/22
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 CT5.241
CT-Series 3-PHASE, 24V, 5A, 120W

21.2. ZM12.SIDE - SIDE MOUNT BRACKET

This ZM12.SIDE bracket is used to mount the device sideways with or without utilizing a DIN rail to
save installation depth.
The two aluminum brackets and the black plastic slider of the unit have to be detached, so that the
ZM12.SIDE steel bracket can be mounted.
For sideway DIN rail mounting, the removed aluminum brackets and the black plastic slider need to be
mounted on the ZM12.SIDE steel bracket.

Fig. 21-7 Fig. 21-8 Fig. 21-9

Side mounting Side mounting Hole pattern
without DIN rail brackets with DIN rail brackets

All dimensions in mm

Aug. 2022 / Rev. 2.2 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted. 22/23
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 CT5.241
CT-Series 3-PHASE, 24V, 5A, 120W

21.3. YRM2.DIODE - REDUNDANCY MODULES

The YRM2.DIODE is a dual redundancy module, which can be used to build 1+1 or N+1
redundant systems.
The device is equipped with two input channels each 10A nominal, which are individually
decoupled by utilizing diode technology. The output can be loaded with nominal 20A.
The device does not require an additional auxiliary voltage and is self-powered even in case
of a short circuit across the output.
The device has a monitoring circuit included and is the perfect choice when the power supply
has no DC-OK function. Two LEDs and two relay contacts signal when one of the two input
voltages is not in range due to a non-functioning or disconnected power supply.
The unit is very slender and only requires 32mm width on the DIN rail.
See chapter 22.5 for wiring information.

21.4. YR20.246 - REDUNDANCY MODULE

The YR20.246 is a dual redundancy module, which can be used to build 1+1 redundant
systems.
The device is equipped with two input channels each 10A nominal, which are individually
decoupled by utilizing MOSFET technology. The output can be loaded with nominal 20A.
Using MOSFETSs instead of diodes reduces heat generation, losses and voltage drop between
input and output. Due to these advantages, the unit is very slender and only requires 32mm
width on the DIN rail.
The device does not require an additional auxiliary voltage and is self-powered even in case
of a short circuit across the output.
The device is equipped with an automated load sharing feature, which balances the load
current between the two input channels. It also monitors the function of the redundancy circuitry and provides a
signal in case of too high of output current, which could prevent redundancy, if one power supply fails. The signal also
reports too low or too high input voltages.
See chapter 22.5 for wiring information.

Aug. 2022 / Rev. 2.2 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted. 23/24
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 CT5.241
CT-Series 3-PHASE, 24V, 5A, 120W

22. APPLICATION NOTES

22.1. PEAK CURRENT CAPABILITY

The unit can deliver peak currents (up to several milliseconds) which are higher than the specified short term currents.
This helps to start current demanding loads. Solenoids, contactors and pneumatic modules often have a steady state
coil and a pick-up coil. The inrush current demand of the pick-up coil is several times higher than the steady-state
current and usually exceeds the nominal output current (including the PowerBoost). The same situation applies when
starting a capacitive load.
The peak current capability also ensures the safe operation of subsequent circuit breakers of load circuits. The load
branches are often individually protected with circuit breakers or fuses. In case of a short or an overload in one branch
circuit, the fuse or circuit breaker need a certain amount of over-current to open in a timely manner. This avoids
voltage loss in adjacent circuits.
The extra current (peak current) is supplied by the power converter and the built-in large sized output capacitors of
the power supply. The capacitors get discharged during such an event, which causes a voltage dip on the output. The
following examples show typical voltage dips for resistive loads:
Fig. 22-1 10A peak current for 50ms, typ. Fig. 22-2 25A peak current for 5ms, typ.
(2x the nominal current) (5x the nominal current)

Peak current voltage dips Typ. from 24V to 18.5V At 10A for 50ms, resistive load
Typ. from 24V to 13V At 25A for 2ms, resistive load
Typ. from 24V to 7V At 25A for 5ms, resistive load

Aug. 2022 / Rev. 2.2 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted. 24/25
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 CT5.241
CT-Series 3-PHASE, 24V, 5A, 120W

22.2. CHARGING OF BATTERIES

The power supply can be used to charge lead-acid or maintenance free batteries. Two 12V SLA or VRLA batteries are
needed in series connection.
Instructions for charging batteries:
a) Ensure that the ambient temperature of the power supply stays below 45°C.
b) Set the output voltage, measured at no load and at the battery end of the cable, very precisely to the end-of-
charge voltage.
End-of-charge voltage 27.8V 27.5V 27.15V 26.8V
Battery temperature 10°C 20°C 30°C 40°C
c) Use a 10A circuit breaker or a blocking diode between the power supply and the battery.
d) Ensure that the output current of the power supply is below the allowed charging current of the battery.
e) Use only matched batteries when putting 12V types in series.
f) The return current to the power supply is typically 5.5mA. This return current can discharge the battery when the
power supply is switched off except in case a blocking diode is utilized.

Aug. 2022 / Rev. 2.2 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted. 25/26
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 CT5.241
CT-Series 3-PHASE, 24V, 5A, 120W

22.3. SERIES OPERATION Unit A

Devices of the same type can be connected in series for higher output voltages. Input
It is possible to connect as many units in series as needed, providing the sum of +
the output voltage does not exceed 150Vdc. Voltages with a potential above -
60Vdc must be installed with a protection against touching. Output
+
Avoid return voltage (e.g. from a decelerating motor or battery) which is Unit B
Load
applied to the output terminals. Input
+ -
Keep an installation clearance of 15mm (left / right) between two power
supplies and avoid installing the power supplies on top of each other. Do not -
Output
use power supplies in series in mounting orientations other than the standard
mounting orientation.
Pay attention that leakage current, EMI, inrush current, harmonics will increase when using multiple devices.

22.4. PARALLEL USE TO INCREASE OUTPUT POWER Unit A

Input
Devises can be paralleled to increase the output power. The output voltage +
shall be adjusted to the same value (±100mV) with the same load conditions on -
all devices, or the devices can be left with the factory settings. Output
+
The ambient temperature is not allowed to exceed +45°C. Unit B
Load
If more than three devices are connected in parallel, a fuse or circuit breaker Input
with a rating of 10A is required on each output. Alternatively, a diode or + -
redundancy module can also be utilized. -
Output
Keep an installation clearance of 15mm (left / right) between two devices and
avoid installing the devices on top of each other. Do not use devices in parallel in mounting orientations other than
the standard mounting orientation or in any other condition where a reduction of the output current is required (e.g.
altitude).
Pay attention that leakage current, EMI, inrush current will increase when using multiple devices.

Aug. 2022 / Rev. 2.2 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted. 26/27
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CT-Series 3-PHASE, 24V, 5A, 120W

22.5. PARALLEL USE FOR REDUNDANCY

1+1 Redundancy:
Devices can be paralleled for redundancy to gain higher system availability. Redundant systems require a certain
amount of extra power to support the load in case one device fails. The simplest way is to put two devices in parallel.
This is called a 1+1 redundancy. In case one device fails, the other one is automatically able to support the load current
without any interruption. It is essential to use a redundancy module to decouple devices from each other. This
prevents that the defective unit becomes a load for the other device and the output voltage cannot be maintained any
more.
For 1+1 redundancy the ambient temperature is not allowed to exceed +70°C.
Recommendations for building redundant power systems:
- Use separate input fuses for each device.
- Use separate mains systems for each device whenever it is possible.
- Monitor the outputs of the individual devices. Use the DC-OK contact, which is included in the redundancy module.
- It is desirable to set the output voltages of all devices to the same value (± 100mV) or leave it at the factory setting.
- Set the devices into “Parallel Use” mode.
Pay attention that leakage current, EMI, inrush current, harmonics will increase when using multiple devices.

N+1 Redundancy:
Redundant systems for a higher power demand are usually built in a N+1 method. E.g. four devices, each rated for 10A
are paralleled to build a 30A redundant system.
Pay attention that leakage current, EMI, inrush current, harmonics will increase when using multiple devices.
Keep an installation clearance of 15mm (left / right) between two devices and avoid installing the devices on top of
each other.
Do not use devices in parallel in mounting orientations other than the standard mounting orientation or in any other
condition, where a reduction of the output current is required.
For N+1 redundancy the ambient temperature is not allowed to exceed +45°C.

Wiring examples for 1+1 and n+1 redundancy:

Fig. 22-3 1+1 Redundant configuration for 2.5A Fig. 22-4 N+1 Redundant configuration for 7.5A load current with multiple power
load current with a dual redundancy module supplies and redundancy modules
Failure
Monitor

+ + - - + + - - - - + + Load
Output Output 1 2 Share
Input Input
Warning + + - - + + - - +- +- o oo o + + - - + + - - +- +- o oo o
o Output Output Input Input Output Output Input Input
Load Share
1 2 1 2 1 2 1 2
OK o
Input ok Input ok
Power Power Redudnadcy o
Supply Supply OK o
Failure Power Power YRM2.DIODE Power Power YRM2.DIODE
YR20.246 Monitor Supply Supply Redundancy Supply Supply Redundancy
Redundancy Module Module
Module
Input Input Output
L1 L2 PE L1 L2 PE - +
Input Input Output Input Input Output
Load L1 L2 PE L1 L2 PE +- L1 L2 PE L1 L2 PE +-
optional

I I I I
optional

optional

L1
I I I I I I I I
L2
PE L1
L2
PE
Alternatively, the YRM2.DIODE can be used but has
Load
higher power losses.

Aug. 2022 / Rev. 2.2 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted. 27/28
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 CT5.241
CT-Series 3-PHASE, 24V, 5A, 120W

22.6. USE IN A TIGHTLY SEALED ENCLOSURE

When the device is installed in a tightly sealed enclosure, the temperature inside the enclosure will be higher than
outside. In such situations, the inside temperature defines the ambient temperature for the device.
In the following test setup, the device is placed in the middle of the box, no other heat producing items are inside the
box. The load is placed outside the box.
The temperature sensor inside the box is placed in the middle of the right side of the power supply with a distance of
1cm.
The following measurement results can be used as a reference to estimate the temperature rise inside the enclosure.
Case A Case B
Enclosure size 110x180x165mm 110x180x165mm
Rittal Typ IP66 Box Rittal Typ IP66 Box
PK 9516 100, PK 9516 100,
plastic plastic
Input voltage 400Vac 400Vac
Load 24V, 4A; (=80%) 24V, 5A; (=100%)
Temperature inside the box 46.0°C 50.6°C
Temperature outside the box 25.6°C 25.9°C
Temperature rise 20.4K 24.7K

Aug. 2022 / Rev. 2.2 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted. 28/29
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CT-Series 3-PHASE, 24V, 5A, 120W

22.7. MOUNTING ORIENTATIONS

Mounting orientations other than input terminals on the bottom and output on the top require a reduction in
continuous output power or a limitation in the maximum allowed ambient temperature.
The listed lifetime and MTBF values from this datasheet apply only for the standard mounting orientation.
The following curves give an indication for allowed output currents for altitudes up to 2000m.

Fig. 22-5 Allowed Output Current at 24V

Mounting OUTPUT 6A
Orientation A 5A
(Standard
orientation) Power 3.8A
Supply

0
INPUT +45 +60 +70°C
Ambient Temperature

Fig. 22-6 Allowed Output Current at 24V

Mounting INPUT
6A
Orientation B
(Upside down) 4A
Supply
Power

OUTPUT 0
+30 +60 +70°C
Ambient Temperature

Fig. 22-7 Allowed Output Current at 24V

Mounting 6A
Orientation C
(Table-top
mounting) 3.5A

0
+25 +60 +70°C
Ambient Temperature

Fig. 22-8 Allowed Output Current at 24V

Mounting 6A
Orientation D
(Horizontal cw)
OUTPUT
Supply
Power

3.5A
INPUT

0
+25 +60 +70°C
Ambient Temperature

Fig. 22-9 Allowed Output Current at 24V

Mounting 6A
Orientation E
(Horizontal ccw)
OUTPUT

3.5A
Supply
Power

INPUT

0
+25 +60 +70°C
Ambient Temperature

Aug. 2022 / Rev. 2.2 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted. 29/29
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