Item 68
Item 68
D.169 ED.2022
SA-P series junction boxes: criteria for choosing the right product
When it comes to deciding on an increased safety enclosure, there is a whole series of essential data to be
taken into account if you are to make the right choice: the mechanical strength of the materials, corrosion
resistance, the IP protection rating and IK impact protection rating in the case of enclosures for watertight/
industrial use.
Mechanical strength
The graph below gives an overview of what use the various materials are suitable for based on the mechanical
stress and harshness of the environmental conditions likely to be encountered.
High
Mechanical strength
Stainless steel
Aluminium
Polyester
Low
Corrosion resistance (suitability for outdoor use)
ED.2022 D.170
Protection ratings
0 Not protected
0 Not protected IK00
Not protected
1
Protected against
solid objects
greater than 1
Protected against
vertically falling
IK01 0.25 kg
5.6 cm
drops of water Protected against im-
50mm in Ø
pact energy of 0.15J
IK03
Protected against 0.25 kg
2 2
Protected against 14 cm
solid objects
rain when tilted up
greater than
to 15° Protected against im-
12mm in Ø
pact energy of 0.35J
3
Protected against
solid objects
greater than 3
Protected against
rain when tilted up
IK05 0.25 kg
28 cm
to 60° Protected against
2.5mm in Ø impact energy of 0.7J
IK06
Protected against 0.25 kg
4 4
Protected 40 cm
solid objects
against splash-
greater than 1mm
ing water Protected against
in Ø
impact energy of 1J
5 Protected against
dust 5
Protected against
jets of water from
IK07 0.5 kg
40 cm
all directions Protected against
impact energy of 2J
6
Totally protected
against the ingress
6 Protected against
heavy seas
IK08 1.7 kg
30 cm
of dust Protected against
impact energy of 5J
A
ADDITIONAL LETTER**
Protected against access with the back
of the hand 7
Protected against
the effects of im-
IK09 5 kg
20 cm
mersion Protected against
8
Protected against 40 cm
the effects of con-
D Protected against access with a wire tinuous immersion Protected against
impact energy of 20J
OPTIONAL LETTER
D.171 ED.2022
SA-...P series Polyester junction boxes (Ex e) and (Ex i)
SA...P series junction boxes are made from fibreglass-reinforced polyester. Because they are highly resistant to
contamination from fuel oils and mechanical shock, in addition to being lightweight and practical, they can be installed
in all industrial plants, especially those where there is a potential risk of explosion and/or fire due to the presence of
combustible gases or dust, classified as Zone 1, 2, 21 and 22. The enclosures have special holes made in the base for
easy wall mounting. The lid features a silicone gasket that is resistant to low and high temperatures and comes complete
with AISI 304 stainless steel screws, which are arranged around the outside of the lid to ensure a tight seal with the
IP66 rating. SA...P series enclosures are mainly used as junction boxes/for routing cables for analogue or digital
signals and/or for control and monitoring associated with equipment such as motors, fans, pumps and/or for giving
physical readings such as flow rate, level, pressure, temperature, current, etc.. Terminal strips can be arranged inside
the enclosure in various different configurations. The Cortem sales team will be able to advise you what enclosure best
meets your needs based on: maximum number of terminals, number of holes per side, minimum distance involved and
maximum power dissipation, ensuring everything is within the limits allowed by the certificate. 'Ex e' control, monitoring
and signalling devices can be mounted on the lid in various different configurations based on your requirements and
within the limits allowed by the certificate.
Cortem Group labels its products with a non-removable adhesive label featuring a hologram and
an alphanumerical univocal code, as a safety measure against the illegal sale of fakes so that
all the products are guaranteed as original. Non-compliance with the International standards
entails serious risks for the environment, especially for those working daily on the plants.
Application sectors:
Oil refineries Chemical and Onshore Offshore Low Fuel Ships and Wastewater
petrochemical plants plants temperatures depots shipbuilding treatment
plants
ED.2022 D.172
SA-...P series Polyester junction boxes (Ex e) and (Ex i)
** For this temperature range the maximum dissipated power shall be reduced by 25% and the nominal current by 15%
D.173 ED.2022
SA-...P series Polyester junction boxes (Ex e) and (Ex i)
CENELEC EN 60079-0: 2018, EN 60079-1: 2014, EN 60079-7: 2015, EN 60079-11: 2012, EN 60079-
18: 20150 EN 60079-31: 2014, EN 60529: 1991 and EUROPEAN DIRECTIVE 2014/34/UE
Standards: IEC 60079-0: 2017, IEC 60079-1: 2014, IEC 60079-7: 2015, IEC 60079-11: 2011, IEC 60079-18:
2014, IEC 60079-31:2013, IEC 60529: 2001
CENELEC EN 60079-0: 2012, EN 60079-7: 2015, EN 60079-28: 2015, EN 60079-31: 2014 and
Standards: EUROPEAN DIRECTIVE 2014/34/UE
IEC 60079-0: 2011-06, IEC 60079-7: 2015, IEC 60079-28: 2015, IEC 60079-31:2013
ED.2022 D.174
SA-...P series Polyester junction boxes (Ex e) and (Ex i)
OVERVIEW OF SIZES
D.175 ED.2022
SA-...P series Polyester junction boxes (Ex e) and (Ex i)
SA141410/P 147 147 100 135 135 79 3 131 131 - 6.5 1.00
SA301410/P 305 147 110 296 138 90 4.5 285 127 - 6.5 1.90
SA302310/P 305 230 110 296 221 90 4.5 285 210 - 6.5 2.50
SA302318/P 305 230 190 296 221 165 4.5 285 210 - 6.5 3.10
SA473018/P 470 305 195 460 295 175 5 450 285 225 6.5 4.70
SA623018/P 620 305 185 608 293 160 5 560 285 260-300 8 6.30
DIMENSIONAL DRAWING
Dimensions in mm
ED.2022 D.176
SA-...P series Polyester junction boxes (Ex e) and (Ex i)
D
1 2 3 4 5 6 7 8
Thread diameter
ISO 261/965 20x1.5 25x1.5 32x1.5 40x1.5 50x1.5 63x1.5 75x1.5 85x2
Through hole Ø20.5 Ø25.5 Ø32.5 Ø40.5 Ø50.5 Ø63.5 Ø75.5 Ø85.5
As required by the current standard, holes can be drilled by Cortem or by authorized partners who
hold a production notification in accordance with ATEX Directive .
D.177 ED.2022
SA-...P series Features of junction boxes with terminals
These enclosures are customized based on size, on the number of terminals or cables they are due to accommodate, or taking into account the number
of cable entries and cabling requirements inside a system. Hence we can produce tailor-made solutions as long as you provide us with the appropriate
parameters required at the quote request stage, such as the number of cable glands, unions or sealing fittings to be installed, so that we can determine the
most suitable size of enclosure. All terminals can be fitted with your requested accessories and mounted on special rails that are fastened to the enclosure's
internal mounting plates. Terminal strips can be arranged in various ways, as specified by the customer and always within the limits allowed by the certificate.
The options are vertical, horizontal, in a number of rows, or on different levels using suitable spacers.
ELECTRICAL FEATURES
ED.2022 D.178
SA-...P series Features of junction boxes with terminals
Examples of terminal strips with minimum installation distances
> 50mm
Ex i terminals Ex e terminals
> 50mm
Ex i terminals Ex e terminals
> 50mm
Notes:
Reference must be made to the minimum distances given, bearing in mind the space required for
internal wiring.
Only ATEX-certified terminals are allowed inside the enclosures.
Ex i rated terminals must be suitably labelled or coloured differently so they are clearly identifiable.
Ex i cable entries must be suitably identified with either labelling or blue markings on cable glands
or the enclosure's sides.
SA090907/P 9 7 6 5
SA111108/P 13 10 8 7 5
SA171108/P 27 21 17 14 11 9
SA141410/P 22 16 14 11 9 7
SA301410/P 57 44 37 30 24 20 15
SA302310/P 2x58 2x44 2x37 2x30 2x24 2x20 2x15
SA302318/P 2x58 2x44 2x37 2x30 2x24 2x20 2x15
SA473018/P 2x97 2x74 2x63 2x51 2x41 2x34 2x25
SA623018/P 2x133 2x101 2x86 2x70 2x56 2x46 2x35
Eg. 2x22= 2 rows of 22 terminals (total 44 terminals). The maximum number of standard terminals refers to the mounting of CABUR terminals.
The data in the table are given as a rough guide only based solely on the size of the enclosures and the space taken up by the terminals.
D.179 ED.2022
SA-...P series Features of junction boxes with terminals
The permissible maximum power dissipation, in order to retain a T6 temperature class with an ambient temperature up
to +40°C or T5 class with an ambient temperature of 55°C, is not to exceed the values given in the tables below.
For an ambient temperature of +60°C, maximum power dissipation must be reduced by 25%, and rated current
reduced by 15%.
The maximum current values for terminal strips used for low-voltage circuits (signalling units) with a T6 temperature
class and maximum ambient temperature of +60°C or T4 and maximum ambient temperature +65°C and +85°C, are
as follows:
+60°C T6 -> max 1A Ex e, max 100mA Ex ia
+85°C T4 -> max 10A Ex e, max 100mA Ex ia
The values given in the tables on the coming pages refer to the maximum number of conductors allowed for a conductor
with a given cross-sectional area and a given maximum current. All incoming wires and active internal links (made by
wires) count as wires. Earth connections (i.e. passive connections) do not count.
When DIN/Omega rails are installed on the internal mounting plate (instead of using the relevant mounting plate
fastening holes), the number of terminals may be slightly less than the number given in the tables.
Other types of terminals can be used up to the space limit of the box. Whatever the case, all terminals used shall be
ATEX and/or IEC Ex certified. Size 35mm2 terminals can be used for conductors with a cross-sectional area of 25mm2.
The maximum number of terminals and maximum number of rows given in the tables is an indicative value: you must
take into account the cable entries on the sides of the boxes. The internal overall dimensions of cable glands/lock nuts
and the overall dimensions of conductors must be taken into consideration to allow for wiring.
In some cases, it may be necessary to reduce the number of terminals or the number of rows.
Example of how to calculate the maximum number of conductors.
Referring to table SA141410/P: 6 conductors with 6mm2 cross-section with 26A continuous current is the limit of this box.
Consequently, box SA141410/P is suitable for containing 3 x 6mm2 terminals (2 conductors for each terminal) with a
max. current of 26A.
There is space for 11 x 6mm2 terminals in the box. The remaining 8 terminals (11-3) can be added and used for low-
current circuits indicated in area "1" of the table (in this case max. 8-10A).
Combined mounting for electrical circuits with different sized cables is possible provided the values given are used
proportionally.
For example:
Nominal X-sect. area (mm2) Current (A) Quantity Capacity
Table showing maximum power dissipation and current Table showing maximum power dissipation and current
for ambient temperature +40°C and +55°C for ambient temperature +60°C
Maximum current [A] per conductor cross- Maximum current [A] per conductor cross-
P sectional area in mm2 P sectional area in mm2
Enclosure Enclosure
[W] [W]
1.5 2.5 4 6 10 16 25 1.5 2.5 4 6 10 16 25
SA090907/P 5.6 11 15 21 26 37 49 67 SA090907/P 4.2 9 12 17 22 31 41 57
SA111108/P 7.5 11 15 21 26 37 49 67 SA111108/P 5.6 9 12 17 22 31 41 57
SA171108/P 8.8 11 15 21 26 37 49 67 SA171108/P 6.6 9 12 17 22 31 41 57
SA141410/P 7.8 11 15 21 26 37 49 67 SA141410/P 5.8 9 12 17 22 31 41 57
SA301410/P 15 11 15 21 26 37 49 67 SA301410/P 11.2 9 12 17 22 31 41 57
SA302310/P 16 11 15 21 26 37 49 67 SA302310/P 12 9 12 17 22 31 41 57
SA302318/P 17.5 11 15 21 26 37 49 67 SA302318/P 13.1 9 12 17 22 31 41 57
SA473018/P 42 11 15 21 26 37 49 67 SA473018/P 31.5 9 12 17 22 31 41 57
SA623018/P 52 11 15 21 26 37 49 67 SA623018/P 39 9 12 17 22 31 41 57
ED.2022 D.180
SA-...P series Features of junction boxes with terminals
Instructions for determining which enclosure is best suited based on the planned number of conductors and terminals.
: In this section of the table that has not been filled in, once you have followed the instructions and complied with the
values given for the enclosure's internal wiring, you can add as many terminals as you want up to the space limit of the box.
: Any wiring that falls within this section of the table that has not been filled in is not covered by the certificate.
"C. No." row: the values given refer to the maximum number of CABUR terminals physically allowed inside the relevant
enclosure. These values are expressed as the product of the rows multiplied by the number of terminals on each row.
"W. No." row: the same as above, but this time referring to Weidmuller terminals.
The terminal brands are mentioned just to give an idea of the quantity of terminals that can be housed inside the enclosure.
The other values given in the cells along the table's diagonal define the maximum number of conductors allowed, based
on their cross-sectional area and maximum current.
D.181 ED.2022
SA-...P series Features of junction boxes with terminals
Sq mm 1.5 2.5 4 6 10 16 25 35
Cabur CBD 2 CBD 4 CBD 6 CBD 10 CBD 16 CBD 35
Weidmuller WDU 1.5 WDU 2.5 WDU 4 WDU 6 WDU 10 WDU 16 WDU 35
Plate Code
Enclosure Plate Code
Long side Short side
SA090907/P B-388 B-455
SA111108/P B-389 B-456
SA141410/P B-390 B-457
SA171108/P B-391 B-458 B-456
SA301410/P B-392 B-459 B-457
SA302310/P B-393 B-459 B-460
SA302318/P B-394 B-461 B-462
SA473018/P B-395 (2x) B-462 B-461
SA623018/P - (2x) B-463 B-463
ED.2022 D.182
SA, SAG... series Features of junction boxes with equipment
Example of junction box with thermostat Example of junction box with proximitor Example of junction box with transmitter
Equipment that can be installed in the junction boxes in accordance with the CML 16 ATEX 3163X or
IECEx CML 16.0074X certificate are described in the following table:
D.183 ED.2022
SA-...P series Features of junction boxes with terminals
DIMENSIONS
ILLUSTRATION DESCRIPTION MODEL CODE KEY
A B
SA090907/P 82 48 B09-229
Internal mounting
plates SA111108/P 100 68 B11-229
SA141410/P 137 105 B14-229
Thickness 2.5mm
Aluminium SA171108/P 159 67 B17-229
SPARE PART
Galvanized steel
SA302310/P
(B...-229AC) 285 180 B32-229
SA302318/P
Stainless steel SA473018/P 453 254 B43-229
(B...-229IN)
SA623018/P 603 249 B64-229
SA090907/P
Low lid SA111108/P
B-0105
enclosures SA141410/P
SA171108/P
Hinges Material: SPARE PART
SA301410/P
High lid SA302310_18/P
B-0106
enclosures SA473018/P
SA623018/P
M8 K-0307/1
Through earth Material: SPARE PART
M6 K-0307/2
Entry
PLG...
SPARE PART
Cable glands
For models and codes, visit NAV... SPARE PART
complete with
www.cortemgroup.com NEV... ACCESSORY
Adapters and
RE...
SPARE PART
reducers ACCESSORY
Lid-mounted
For control and signalling device models and codes, see M-0... SPARE PART
control and
control and monitoring device chapter (Ex de) ACCESSORY
signalling devices
Brass continuity
B-...
SPARE PART
For models and codes, see chart given earlier
plates for earthing ACCESSORY
ED.2022 D.184
SA-...P series Polyester junction boxes (Ex e) and (Ex i)
Zone 1,2,21,22.
Degree of protection IP66.
Polyester body and lid.
Silicone gasket.
Stainless steel bolts and screws.
Impact protection IK10.
Width/Depth/Height: 90/90/73mm
Other: M32 - -
As required by the current standard, holes
1mm-thick brass continuity plates M40 - - can be drilled by Cortem or by authorized
partners who hold a production notification
Terminals M50 - - in accordance with ATEX Directive .
Cable glands M63 - -
Through earth screw Research conducted using Cortem's new
NAV and NEV series cable glands.
D.185 ED.2022
SA-...P series Polyester junction boxes (Ex e) and (Ex i)
Zone 1,2,21,22.
Degree of protection IP66.
Polyester body and lid.
Silicone gasket.
Stainless steel bolts and screws.
Impact protection IK10.
Width/Depth/Height: 110/110/83mm
Other: M32 1 1
As required by the current standard, holes
1mm-thick brass continuity plates M40 - - can be drilled by Cortem or by authorized
partners who hold a production notification
Terminals M50 - - in accordance with ATEX Directive .
Cable glands M63 - -
Through earth screw Research conducted using Cortem's new
NAV and NEV series cable glands.
ED.2022 D.186
SA-...P series Polyester junction boxes (Ex e) and (Ex i)
Zone 1,2,21,22.
Degree of protection IP66.
Polyester body and lid.
Silicone gasket.
Stainless steel bolts and screws.
Impact protection IK10.
Width/Depth/Height: 170/110/83mm
Other: M32 1 2
As required by the current standard, holes
1mm-thick brass continuity plates M40 - - can be drilled by Cortem or by authorized
partners who hold a production notification
Terminals M50 - - in accordance with ATEX Directive .
Cable glands M63 - -
Through earth screw Research conducted using Cortem's new
NAV and NEV series cable glands.
D.187 ED.2022
SA-...P series Polyester junction boxes (Ex e) and (Ex i)
Zone 1,2,21,22.
Degree of protection IP66.
Polyester body and lid.
Silicone gasket.
Stainless steel bolts and screws.
Impact protection IK10.
Width/Depth/Height: 147/147/100mm
Other: M32 2 2
As required by the current standard, holes
1mm-thick brass continuity plates M40 1 1 can be drilled by Cortem or by authorized
partners who hold a production notification
Terminals M50 - - in accordance with ATEX Directive .
Cable glands M63 - -
Through earth screw Research conducted using Cortem's new
NAV and NEV series cable glands.
ED.2022 D.188
SA-...P series Polyester junction boxes (Ex e) and (Ex i)
Zone 1,2,21,22.
Degree of protection IP66.
Polyester body and lid.
Silicone gasket.
Stainless steel bolts and screws.
Impact protection IK10.
Width/Depth/Height: 305/147/110mm
Other: M32 2 5
As required by the current standard, holes
1mm-thick brass continuity plates M40 1 4 can be drilled by Cortem or by authorized
partners who hold a production notification
Terminals M50 1 3 in accordance with ATEX Directive .
Cable glands M63 - -
Through earth screw Research conducted using Cortem's new
NAV and NEV series cable glands.
D.189 ED.2022
SA-...P series Polyester junction boxes (Ex e) and (Ex i)
Zone 1,2,21,22.
Degree of protection IP66.
Polyester body and lid.
Silicone gasket.
Stainless steel bolts and screws.
Impact protection IK10.
Width/Depth/Height: 305/230/110mm
Other: M32 3 5
As required by the current standard, holes
1mm-thick brass continuity plates M40 3 4 can be drilled by Cortem or by authorized
partners who hold a production notification
Terminals M50 - - in accordance with ATEX Directive .
Cable glands M63 - -
Through earth screw Research conducted using Cortem's new
NAV and NEV series cable glands.
ED.2022 D.190
SA-...P series Polyester junction boxes (Ex e) and (Ex i)
Zone 1,2,21,22.
Degree of protection IP66.
Polyester body and lid.
Silicone gasket.
Stainless steel bolts and screws.
Impact protection IK10.
Width/Depth/Height: 305/230/190mm
Other: M40 6 8
As required by the current standard, holes
1mm-thick brass continuity plates M50 4 6 can be drilled by Cortem or by authorized
partners who hold a production notification
Terminals M63 2 3 in accordance with ATEX Directive .
Cable glands
Through earth screw Research conducted using Cortem's new
NAV and NEV series cable glands.
D.191 ED.2022
SA-...P series Polyester junction boxes (Ex e) and (Ex i)
Zone 1,2,21,22.
Degree of protection IP66.
Polyester body and lid.
Silicone gasket.
Stainless steel bolts and screws.
Impact protection IK10.
Width/Depth/Height: 470/305/195mm
Other: M40 8 12
As required by the current standard, holes
1mm-thick brass continuity plates M50 8 12 can be drilled by Cortem or by authorized
partners who hold a production notification
Terminals M63 3 4 in accordance with ATEX Directive .
Cable glands
Through earth screw Research conducted using Cortem's new
NAV and NEV series cable glands.
ED.2022 D.192
SA-...P series Polyester junction boxes (Ex e) and (Ex i)
Zone 1,2,21,22.
Degree of protection IP66.
Polyester body and lid.
Silicone gasket.
Stainless steel bolts and screws.
Impact protection IK10.
Width/Depth/Height: 620/305/185mm
Other: M40 8 16
As required by the current standard, holes
1mm-thick brass continuity plates M50 8 12 can be drilled by Cortem or by authorized
partners who hold a production notification
Terminals M63 3 6 in accordance with ATEX Directive .
Cable glands
Through earth screw Research conducted using Cortem's new
NAV and NEV series cable glands.
D.193 ED.2022
Features of junction boxes for control, monitoring and signalling units
Control, monitoring and signalling units are used to produce control boards that, when positioned near the electrical equipment being controlled, enable the
electrical system to operate correctly and guarantee the safety of personnel when maintenance is being performed on the system. Because they are fitted with
a Manual/Automatic selector, they allow operators to select the appropriate conditions to enable work to be performed entirely safely. They offer protection
and control for electrical equipment and control circuits located in explosion hazard areas and in particularly aggressive environments. They are used to hold
electrical equipment, such as switches, indicators, contactors, transformers, analogue and digital components, etc.... with the option of external control by
using lid-mounted Cortem control and signalling devices, such as control levers, pushbuttons, indicator lights, etc.... Cortem designs, develops and supplies
full cabling for one or more enclosures tailored to your specific requirements, producing panel boards - including even extremely complex solutions - and
providing a full inspection and testing service on request.
ELECTRICAL FEATURES
Rated voltage: 600 V ac/dc
Max. current on contacts: 16 A
Rated frequency: 50 / 60Hz
MINIMUM DISTANCES BETWEEN CORTEM Ex e CONTACTS (e.g. with reference to CESI 03 ATEX 115 certificate)
1 2 3
Key:
1. indicator light M-0612
2. rotating selector M-0604
3. emergency stop pushbutton M-0605
4. contact block M-0530
5. contact block M-0531
6. pushbutton M-0603
7. earth bar
4 5
8. terminals
9. internal mounting plate
Notes:
"e">12mm: standard version.
Suitable for voltage U<800V
"e">5mm: special versions.
Suitable for voltage U<250V
7
When determining enclosure size, what holes are drilled
and what devices can be installed, we also need to take
into account the space required for internal wiring and
6 9
running the cables.
ED.2022 D.194
Features of junction boxes for control, monitoring and signalling units
SA111108/P 90x90
SA171108/P 90x150
SA141410/P 127x127
SA302310/P 210x285
SA302318/P 210x285
SA473018/P 285x450
SA623018/P 596x280
2-contact device
Ammeter/voltmeter
Indicator light
Notes:
Minimum distances between devices worked out for use of
standard 60x20 plates.
Option of using up to 4 contacts per device for pushbutton
M-0603 and selector M-0604.
Option of using up to 2 contacts per device for emergency stop
pushbutton M-0605.
For more information, refer to the Ex e control, monitoring and
signalling devices chapter.
D.195 ED.2022
ED.2022 D.196