WTH-40/C/2P-PV Series
www.watchfuleyesolutions.com Surge Protective Device for Photovoltaic System

In accordance with: IEC 61643-1 - Class II and UL1449 Type 4 Location
Location of use: Photovoltaic Combiner Box & Photovoltaic Power Supply Box
Plug-in module and separate base design enables convenient maintenance.

WTH-40/C/...PV Series
Model Uc(pvdc) Up Ures Ordering code
WTH-40/C/2P-PV1000 1000V 3.4kV 2.8kV US120391
WTH-40/C/2P-PV800 800V 2.8kV 2.2kV US120392
WTH-40/C/2P-PV600 600V 2.5kV 1.9kV US120332
WTH-40/C/2P-PV500 500V 2.2kV 1.6kV US120385
WTH-40/C/2P-PV200 200V 1.5kV 1.0kV US120337
WTH-40/C/2P-PV100 100V 1.3kV 0.8kV US120333
※ Uc: Max. continuous operating voltage
※ Up: Voltage protection level ※ Ures @6kV/3kA: Residual voltage

Technical Data
Requirement Class to IEC61643-1 Class II
IEEE Category Rating B & A
Nominal Discharge Current (In) 20kA
Max. Discharge Current (Imax) 40kA
Pulsed Current (Iimp @10/350) N/A
Protection Modes DC+/PE, DC-/PE
Protective Element MOV
Follow Current (If) NO
Response Time (tA) <25ns
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 >80A) 80A gL (circuit-breaker: <40A)
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"×3.9"×2.7" (36mm×99mm×69mm)
Remote Contacts YES
Contact Ratings AC:125V/1A
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