Watchful Eye Solutions, Inc.
WTH-80, WTH-100 /... Class I+II Series
Lightning & Surge Protection
www.watchfuleyesolutions.com
The Guardian that Protects Your AC Power Supply System against Surge and Lightning
WTH-100/G/1P-255 (N-PE Only)
Uc
WTH-80 Series
WTH-100 Series
50kA
Imax
100kA
Iimp
12.5kA
Up
1.2kV
Ures
0.7kV
WTH-100/G/1P-255
WTH-80
Requirement Class to IEC61643-1
255VAC
In
WTH-100
Class I+II
C, B & A
IEEE Category Rating
L-N, L-PE, N-PE
Protection Modes
Nominal Discharge Current (In @8/20s)
40kA
50kA
Max. Discharge Current (Imax @8/20s)
80kA
100kA
Pulsed Current (Iimp @10/350s)
10kA
Follow Current (If)
Short Circuit Current Ratings (SCCR)
Surge Protective Device
for Low Voltage Power Supply System
12.5kA
Different types for your choosing according to
different voltages
(110V, 120/208V, 220/380V, 277/480V, 347/600V)
NO
20kA rms
Response Time (tA)
Leakage Current (at 75%U1mA)
< 25ns
<20A
In accordance with: IEC 61643-1 - Class I+II and
UL1449 Type 4 Location
Thermal Protection
Back-up Fuse (if mains > 125A)
YES
125A gL
Location of use: main sub-distribution boards,
branch sub-distribution boards
- 40 to 176F (-40 to 80C)
0% to 95% noncondensing
Temperature Range
Relative Humidity
Maximum Operating Altitude
The convenient plug-in module, and separate
base design
10,000 feet (3000m)
35mm (solid) / 25mm (stranded)
Terminal Cross Section
Stripping Length Contacts
Terminal Screw Torque
Internal thermal disconnect devices help ensure
safe or at end-of-life
0.6inches (15mm)
Combinations: 1P, 1P+NPE, 2P, 3P, 3P+NPE, 4P
Max. 3.5Nm
Protection Rating (IP Code)
Remote Contact: optional
IP 20
>5000 events
35mm top-hat rail
Surge Life at 3kA (8/20s)
Din Rail EN60715
Housing Material
Thermoplastic; extinguishing degree UL 94 V-0
10
10
2
F1
L1 F3
L2
L3
N
PE
PEN
F2
5
F2
S
P
D
S
P
D
S
P
D
S
P
D
S
P
D
S
P
D
S
P
D
S
P
D
S
P
D
5
6
80/100-2
Key
1. Origin of the installation
2. Distribution board
3. Distribution outlet
4. Main earthing terminal or bar
5. Surge protective device, class I or II tested
6. Earthing connection (earthing conductor) of the
surge protective device
7. Fixed equipment to be protected
8. Surge protective device, class II tested
9. Surge protective device, class II or class III tested
10. Decoupling element or line length
F1, F2, F3 overcurrent protective disconnectors
NOTE Refer to IEC 61643-12 for further information.
IEC62305-4
Installation example of test class I, class II and class III SPDs
Surge Protection for AC Power Supply System
www.watchfuleyesolutions.com
Type:
Up
Ures
WTH-80/B+C/...75 Series
75VAC
1.3kV
0.6kV
WTH-80/B+C/...115 Series
115VAC
1.5kV
0.7kV
WTH-80/B+C/...150 Series
150VAC
1.6kV
0.8kV
WTH-80/B+C/...275 Series
275VAC
1.8kV
1.0kV
WTH-80/B+C/...320 Series
320VAC
2.0kV
1.1kV
WTH-80/B+C/...385 Series
385VAC
2.1kV
1.2kV
WTH-80/B+C/...420 Series
420VAC
2.2kV
1.4kV
WTH-80/B+C/...550 Series
550VAC
2.7kV
1.8kV
WTH-80/B+C/...690 Series
690VAC
3.0kV
2.1kV
WTH-100/B+C/...75 Series
75VAC
1.4kV
0.6kV
WTH-100/B+C/...115 Series
115VAC
1.6kV
0.7kV
WTH-100/B+C/...150 Series
150VAC
1.7kV
0.8kV
WTH-100/B+C/...275 Series
275VAC
1.9kV
1.0kV
WTH-100/B+C/...320 Series
320VAC
2.1kV
1.1kV
WTH-100/B+C/...385 Series
385VAC
2.2kV
1.2kV
WTH-100/B+C/...420 Series
420VAC
2.3kV
1.4kV
WTH-100/B+C/...550 Series
550VAC
2.8kV
1.8kV
WTH-100/B+C/...690 Series
690VAC
3.1kV
2.1kV
Uc (MCOV)
How to name our products
WTH - 80 / B+C / R / 1P - 385
Watchfuleye
Remote contacts
Imax
Class 1+II / Type 1+2
Uc~: 385V
Combination
Features of Class I + II :
Power Supply System
Uc(MCOV), L-PE Mode, Uc>1.15Un
110V, 120/208
150VAC
220/380
275VAC, 320VAC, 385VAC
230/400V
275VAC, 320VAC, 385VAC , 420VAC
240/415V
320VAC, 385VAC , 420VAC
277/480V
320VAC, 385VAC , 420VAC
347/600V
550VAC, 690VAC
The impulse current and residual voltage curve in In=-40kA
(WTH-80/B+C/1P-420(L-PE))
Have high capability of Class I lightning and surge protection,
and capability of Class II (equivalent to the parameters of
WTH-40 ) fine protection with low residual voltage as well,
applying to Class I and Class II lightning and surge protection
in multiple areas. If you are not sure which module to choose
for protecting your area, Class I + II is the best solution.
Un: Normal operating voltage rating
Uc (MCOV - UL): Max. continuous operating voltage
Up: Voltage protection level (at In)
Ures: Residual voltage at 6kV 1.2/50s & 3kA 8/20s
Frequency: 50Hz to 60Hz
Note: Uc>1.15Un
The relationship between two parameters Uc and Up of a SPD is proportional.
If Uc is small, the value of Up is also small; SPDs with smaller Up can provide
better surge protection.
Whether to choose smaller Uc depends on the voltage stability of the grid. If
you choose SPDs with smaller Uc for the grid with instable voltage, the SPDs
will frequently work while the grid voltage fluctuates, resulting in shortening
SPDs product life.
If you choose larger Uc, and the value of Up is accordingly large, the surge
protective efficiency will not be so fine.
If you are unsure of the voltage stability of the grid, it is suggested to calculate
Uc using the following formula: 2 Un<Uc< 3 Un
The impulse current and residual voltage curve in In=-40kA
(WTH-80/B+C/1P-690(L-PE))
Watchful Eye Solutions, Inc.
80/100-3
The Guardian that Protects Your AC Power Supply System against Surge and Lightning
Application
Customized and designed by professional and experienced
engineers according to your systems
Different specifications for your choices (plastic shell and
metal shell box; single-phase, three-phase power supply
system)
Suitable for 110V, 120/208V, 220/380V, 277/480V, 347/600V
AC voltage systems
Able to assemble fuses, circuit breakers, lightning counter
and monitoring, etc. in accordance with the requirements
of your surge protection systems
Realize remote intelligent monitoring through wireless,
wired network or cloud service
Bus Bar
Insert
m
35m
r a il
3.5Nm
WTH-2P/100
(1P+NPE, 2P Mode)
WTH-3P/100
(2P+NPE, 3P Mode)
WTH-4P/100
(3P+NPE, 4P Mode)
Bus bar
Single modules can be combined with a bus bar in multiple combination methods
PULL
Insert
Remote Contacts
3
1: COM(Common)
2: NC(Normally Close)
3: NO(Normally Open)
Type: WTH-80/B+C/ R /1P-385
WTH-80/B+C/R
Remote contacts
Remote Contacts
Contact Ratings
Terminal Cross Section
Stripping Length Contacts
Remote Terminal Torque
80/100-4
Surge Arrester
L/N (L)
Uc~ : 385V
In : 40kA
Imax : 80kA
Up : <2.1kV
IEC61643-1 T1
T2
Ro H S
PE (N)
green: ok red: replace
AC:125V/1A
Max. 1.5mm
0.25inches (6-7mm)
0.25Nm
Surge Protection for AC Power Supply System
www.watchfuleyesolutions.com
F1
F1
L/N
L/N
F2
N
F2
Back-up fuse
Thermal disconnect devices
Remote Contact
Protective Element:
High Energy GDT
Protective Element:
High Energy MOV
WTH-80, WTH100 Series
WTH-80, WTH-100 Series
Selection of back-up fuse
WTH-100/G/1P-255
N-PE Only
Selection of back-up circuit-breaker
F1125A gL
F2 = 125A gL
F163A
F2 = 63A
F1125A gL
F2
F163A
F2
Dimensions
advice :
min. recommended
cross section 10mm
Back-up circuit-breaker
Two details strengthening the protection
36mm
36mm distance between two
terminals
Increase creepage distance
90
35.8max
99
Make the connection more secured
More important for the application
with UC higher than 550V
Indication of two levels of
lightning and surge protection
The capability of displaying 50 percent of
surge protection capacity: under normal
circumstances, with two MOVs' protection
at the same time, the module can realize
Class I lightning protection; in case that
one of the indicator windows indicates
red, there's still 50% of surge protection
capacity to meet Class II lightning/surge
protection requirements, and the module
shall be replaced timely at this point.
or
Fault Indication
green : OK
replace
35mm ra
il
red : fault (replace)
Pull out upward
WatchfulSystem
Eye Solutions, Inc.
Surge Protection for AC Power Supply
80/100-5
The Guardian that Protects Your AC Power Supply System against Surge and Lightning
Lightning and Surge Protection
for 2 Wire + Ground System
1
N
G(PE)
Single Phase
2 Wire + Ground
F1
L
N
PE
L
N
PE
F1
L
N
L
N
PE
F2
F2
PE
PE
WTH-80/B+C/...2P, WTH-100/B+C/...2P Combination
WTH-80/B+C/...1P+NPE, WTH-100/B+C/1P+NPE... Combination
F1
L/N
L/N
PE
PE
PE
N
PE
F2
PE
WTH-80/B+C/...1P, WTH-100/B+C/...1P Series
80/100-6
PE
WTH-100/G/1P-255
Surge Protection for AC Power Supply System
www.watchfuleyesolutions.com
Lightning and Surge Protection
for 3 Wire + Ground System
2
L1
L2
L3
G(PE)
3 Phase Delta
3 Wire + Ground
F1
L1
L1
L2
L3
PEN
L2
L3
PEN
F2
PE
WTH-80/B+C/...3P, WTH-100/B+C/...3P Combination
E
F1
F1
L/N
L/N
PE
PE
F2
L1
L1
L2
L3
PEN
L2
L3
PEN
F2
PE
PE
WTH-80/B+C/...1P, WTH-100/B+C/...1P Series
WTH-80/B+C/...3P, WTH-100/B+C/...3P Combination
Watchful Eye Solutions, Inc.
80/100-7
The Guardian that Protects Your AC Power Supply System against Surge and Lightning
Lightning and Surge Protection
for 4 Wire + Ground System
3
L1
L2
N
3 Phase Star
4 Wire + Ground
L3
G(PE)
F1
L1
L1
L2
L3
N
PE
L2
L3
N
PE
F1
L1
L2
L3
N
L1
L2
L3
N
PE
F2
F2
PE
PE
WTH-80/B+C/...4P, WTH-100/B+C/...4P Combination
WTH-80/B+C/...3P+NPE, WTH-100/B+C/...3P+NPE Combination
F1
F1
L/N
L/N
PE
PE
PE
N
PE
F2
PE
WTH-80/B+C/...1P, WTH-100/B+C/...1P Series
80/100-8
PE
WTH-100/G/1P-255
Surge Protection for AC Power Supply System
www.watchfuleyesolutions.com
Lightning and Surge Protection
for 3 Wire + Ground System
4
L1
N
Split Phase
3 Wire + Ground
L2
G(PE)
F1
F1
L/N
L/N
PE
PE
F2
L1
L1
L2
L3
PEN
L2
L3
PEN
F2
PE
PE
WTH-80/B+C/...1P, WTH-100/B+C/...1P Series
WTH-80/B+C/...3P, WTH-100/B+C/...3P Combination
Watchful Eye offers complete and reliable technical solutions for AC power supply systems, protecting
the electrical facilities throughout buildings against lightning and surge, providing a guarantee for the
security of your systems and avoid unnecessary losses.
Watchful Eye Solutions, Inc.
80/100-9
The Guardian that Protects Your AC Power Supply System against Surge and Lightning
Ordering Code
Type:
Ordering code
Type:
Ordering code
US 120 241
WTH-80/B+C/R/1P-75
WTH-80/B + C/1P-115
US 120 242
WTH-80/B+C/R/1P-115
US 120 252
WTH-80/B + C/1P-150
US 120 243
WTH-80/B+C/R/1P-150
US 120 253
WTH-80/ B+ C/1P-275
US 120 244
WTH-80/B+C/R/1P-275
US 120 254
US 120 255
WTH-80/B + C/1P-75
US 120 251
US 120 245
WTH-80/B+C/R/1P-320
WTH-80/ B+ C/1P-385
US 120 246
WTH-80/B+C/R/1P-385
US 120 256
WTH-80/ B+ C/1P-420
US 120 247
WTH-80/B+C/R/1P-420
US 120 257
WTH-80/ B+ C/1P-550
US 120 248
WTH-80/B+C/R/1P-550
US 120 258
WTH-80/ B+ C/1P-690
US 120 249
WTH-80/B+C/R/1P-690
US 120 259
WTH-100/B + C/1P-75
US 120 261
WTH-100/B+C/R/1P-75
US 120 271
WTH-100/B + C/1P-115
US 120 262
WTH-100/B+C/R/1P-115
US 120 272
WTH-100/B + C/1P-150
US 120 263
WTH-100/B+C/R/1P-150
US 120 273
WTH-100/ B+ C/1P-275
US 120 264
WTH-100/B+C/R/1P-275
US 120 274
WTH-100/ B+ C/1P-320
US 120 265
WTH-100/B+C/R/1P-320
US 120 275
WTH-100/ B+ C/1P-385
US 120 266
WTH-100/B+C/R/1P-385
US 120 276
WTH-100/ B+ C/1P-420
US 120 267
WTH-100/B+C/R/1P-420
US 120 277
WTH-100/ B+ C/1P-550
US 120 268
WTH-100/B+C/R/1P-550
US 120 278
WTH-100/ B+ C/1P-690
US 120 269
WTH-100/B+C/R/1P-690
US 120 279
WTH-100/G/1P-255
US 120 240
WTH-80/ B+ C/1P-320
WTH-2P /10 0
US 129 004
WTH-3P/100
US 129 005
WTH-4P/100
US 129 006
80/100-10
Surge Protection for AC Power Supply System
www.watchfuleyesolutions.com
Lightning and Surge Protection
for AC Power Supply System
A
Utility Service
Class I Surge Arresters
Origin of the installation
Electric Equipment
Class II Surge Arresters
Distribution board
Class III Surge Arresters
Distribution outlet
AC
F
E
C
B C
G
H
C D
AC
IEEE 62.41
CATEGORY C: outdoor overhead lines, service entrance (most severe)
CATEGORY B: major feeder, short branch circuits, service panel (indoor)
CATEGORY A: long branch circuits, receptacles (indoor) (least severe)
Watchful Eye Solutions, Inc.
80/100-11
The Guardian that Protects Your AC Power Supply System against Surge and Lightning
UL Listed
(http://www.ul.com/database)
http://www.ul.com/database
http://www.ul.com/database
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WATCHFUL EYE SOLUTIONS INC
Surge- protective
WATCHFUL EYE SOLUTIONS INC
Surge- protective
Model number information is not published for all product
number, please contact Customer Service for further assi
VZCA2. E345944
Surge- protective Devices - Component
Page Bottom
Surge- protective Devices - Component
See General Information for Surge- protective Devices - Component
WATCHFUL EYE SOLUTIONS INC
E345944
24E Hudson View Dr
Beacon, NY 12508 USA
Effective May 3, 2010
Cat No.
SPD
Type
Volts
( V)
AC/ DC/
DC PV
PH
AMPS
( A)
AMB
( C)
MODE
VPR
( Vpk)
MLV
( Vpk)
MCOV
( V)
Vn
( Vdc)
In
( kA)
SCCR
( kA)
NOTES
WTH50/ B+ C/ 1P- 385
4CA
277
AC
n/a
65
Ld- Ld
1830
385
n/a
20
n/a
WTH50/ B+ C/ R/ 1P385
4CA
277
AC
n/a
65
Ld- Ld
1830
385
n/a
20
n/a
WTH65/ B+ C/ 1P- 385
4CA
277
AC
n/a
65
Ld- Ld
1830
385
n/a
20
n/a
WTH65/ B+ C/ R/ 1P385
4CA
277
AC
n/a
65
Ld- Ld
1830
385
n/a
20
n/a
AC
n/a
65
Ld- Ld
1620
385
n/a
20
n/a
Din Rail Moudle, Series WTH- 385
WTH100/ B+ C/ 1P385
80/100-12
4CA
277
Surge Protection for AC Power Supply System
www.watchfuleyesolutions.com
Lightning and Surge Protection
for AC Power Supply System
A
Class I Surge Arresters ( voltage switching type )
Class II Surge Arresters
Class I Surge Arresters ( voltage limiting type )
Class III Surge Arresters
Iimp(10/350 s )
Uoc(1.2/50s+8/20s)
Imax
A
400kA
WTH-500/G Series(Iimp:50kA)
200kA
WTH-300/G Series(Iimp:25kA)
WTH-165/B Series(Iimp:17.5kA)
B 165kA
WTH-120/B Series(Iimp:15kA)
B 120kA
20kA
10kA
WTH-20/D Series(Uoc:20kV)
WTH-10/AC Series(Uoc:15kV)
kA
WTH-40/C Series(with the most widely application)
kA
40kA
60kA
80kA
100kA
200kA
50
50kA
kA
40
65kA
kA
30
WTH-80/B+C Series(Iimp:10kA)
WTH-65/B+C Series(Iimp:7.5kA)
WTH-50/B+C Series(Iimp:5kA)
kA
80kA
25
20
WTH-100/B+C Series(Iimp:12.5kA)
100kA
5k
10 A
kA
In(8/20 s )
IEC61643-1
5 Standard ratings
5.1 Preferred values of impulse current for class I tests Iimp
5.2 Preferred values of nominal discharge current for class I I tests In
5.3 Preferred values of open-circuit voltage for class III tests Uoc
Watchful Eye Solutions, Inc.
80/100-13
Watchfuleye is specialized in a complete range of lightning and surge protective devices, with
wide applications in low voltage DC & AC power supply system, data and control system,
intelligent monitoring system and new energy industry like solar and wind power system, etc.
Our company also offers reliable custom technical solutions in lightning & surge protection for
global customers.
Headquatered in New York, watchful Eye has a network of sales to serve our customers world
wide. with high quality products and optimal service, Watchful Eye can meet your strict technical
standards and unique requirements.
Watchful Eye
The Guardian that Protects
Your System against Surge and Lightning
Watchful Eye Solutions, Inc.
www.watchfuleyesolutions.com
