WTH-40/C/R/1P DC Series
www.watchfuleyesolutions.com Surge Protective Device for DC Power Supply System

Paperless Datasheet
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In accordance with: IEC 61643-1 - Class II and UL1449 Type 4 Location
Location of use: DC load centers
Plug-in module and separate base design enables convenient maintenance.

WTH-40/C/R/1P DC Series
Model Ordering code
WTH-40/C/1P-D24 US128045
WTH-40/C/1P-D24 x2pcs US128045x2
WTH-40/C/1P-D48 US128046
WTH-40/C/1P-D48 x2pcs US128046x2

Technical Data
Model WTH-40/C/1P-D24 WTH-40/C/1P-D48
Nominal operating voltage (Un) 24VDC 48VDC
Max. continuous operating voltage (Uc) 28VDC 57VDC
Nominal Discharge Current (In) 2.5kA 2.5kA
Max. Discharge Current (Imax) 5kA 5kA
Voltage protection level (Up) 95V 130V
Protection Modes +/-, +/PE, -/PE
Protective Element MOV+TVS
Response Time (tA) <1ns
Leakage Current (at 75%U1mA) <10μA
Thermal Protection YES
Protection Rating (IP Code) IP 20
Surge Life at 1kA (8/20μs) >500 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 17.8mm (1TE)
Housing Material Thermoplastic (UL94 V-0)
Housing Design Modular design
Net Weight Per Unit 0.3Lb (136g)
Package Dimension (W×H×D) 0.7"×3.9"×2.7" (17.8mm×99mm×69mm)
Remote Contacts YES
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
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