WTH-100/B+C/1P Series
www.watchfuleyesolutions.com Surge Protective Device for AC Power Supply System

Paperless Datasheet
Going green and protecting environment is manufacturers' responsibility. WatchfulEye products have the links of downloading data sheet on its enclosure:

In accordance with: IEC 61643-1 - Class I+II and UL1449 Type 4 Location
Location of use: main sub-distribution boards, branch sub-distribution boards
Plug-in module and separate base design enables convenient maintenance.

WTH-100/B+C/1P Series
Model Uc(AC/DC) Up Ures Ordering code
WTH-100/B+C/1P-75 75/100V 1.4kV 0.6kV US120261
WTH-100/B+C/1P-115 115/150V 1.6kV 0.7kV US120262
WTH-100/B+C/1P-150 150/200V 1.7kV 0.8kV US120263
WTH-100/B+C/1P-275 275/350V 1.9kV 1.0kV US120264
WTH-100/B+C/1P-320 320/400V 2.1kV 1.1kV US120265
WTH-100/B+C/1P-385 385/500V 2.2kV 1.2kV US120266
WTH-100/B+C/1P-420 420/600V 2.3kV 1.4kV US120267
WTH-100/B+C/1P-550 550/700V 2.8kV 1.8kV US120268
WTH-100/B+C/1P-690 690/800V 3.1kV 2.1kV US120269
※ Uc: Max. continuous operating voltage ※ Frequency: 50/60Hz (AC Power)
※ Up: Voltage protection level ※ Ures @6kV/3kA: Residual voltage

Technical Data
Requirement Class to IEC61643-1 Class I+II
IEEE Category Rating C, B & A
Nominal Discharge Current (In) 50kA
Max. Discharge Current (Imax) 100kA
Pulsed Current (Iimp) 12.5kA
Protection Modes L-PE, N-PE
Protective Element High Energy MOV
Follow Current (If) NO
Response Time (tA) <5ns
Leakage Current (at 75%U1mA) <20μA
Thermal Protection YES
Protection Rating (IP Code) IP 20
Short Circuit Current Ratings (SCCR) 20kA rms
Max. Back-up Fuse (if mains >125A) 125A gL (circuit-breaker: <63A)
Surge Life at 3kA (8/20μs) >5000 events
Temperature Range - 40°F to 176°F (-40°C to 80°C)
Relative Humidity 0% to 95% noncondensing
Maximum Operating Altitude 10,000 feet (3000m)
Terminal Cross Section 35mm² (solid) / 25mm² (stranded)
Stripping Length Contacts 0.6inches (15mm)
Terminal Screw Torque Max. 3.5Nm
DIN Rail EN60715 35mm top-hat rail
Dimensions DIN 43880 36mm (2TE)
Housing Material Thermoplastic (UL94 V-0)
Housing Design Modular design
Net Weight Per Unit 0.5Lb (227g)
Package Dimension (W×H×D) 1.4"×3.6"×2.7" (36mm×90mm×69mm)
Remote Contacts NO
Contact Ratings 125VAC/3A, 250VAC/1.5A
Terminal Cross Section Max. 1.5mm²
Stripping Length Contacts 0.25inches (6-7mm)
Remote Terminal Torque 0.25Nm

Connection Diagram
Fault Indication
Visit us at