WTH-SG/TD Series
www.watchfuleyesolutions.com Surge Protective Device for DC Power

Paperless Datasheet
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WTH-SG/TD series surge protective devices for DC power are applied to the front side of the device in power supply line of different voltage, such as computer system, modem, signal control, etc.
Providing protection against overvoltage arising from lightning or mis-operation.
(Standards compliance: IEC61643-1)

Ordering Information
Model Un Uc Up Ordering code
WTH-SG/TD-12 12VDC 18VDC 400V US121001
WTH-SG/TD-24 24VDC 36VDC 400V US121002
WTH-SG/TD-48 48VDC 60VDC 600V US121004
※ Un: Nominal operating voltage
※ Uc: Max. continuous operating voltage
※ Up (8/20μs, @line-GND/PE): Voltage protection level

Technical Data
Nominal Discharge Current (In @8/20μs) 5kA
Max. Discharge Current (Imax @8/20μs) 10kA
Max Line Current 2.5A
Protective Element GDT, MOV
Response Time (tA) <25ns (line-GND/PE)
Connection mode 1.5mm² wiring terminal
Temperature Range - 40° to 176°F (-40° to 80°C)
Relative Humidity 0% to 95% noncondensing
Maximum Operating Altitude 10,000 feet (3000m)
Cross-sectional area of earth lead 3mm² multistranded / flexible
Stripping Length Contacts 0.25inches (6-7mm)
Terminal Screw Torque Max. 0.25Nm
Protection Rating (IP Code) IP 20
Surge Life at 0.5kA (8/20μs) >2000 events
DIN Rail EN60715 35mm top-hat rail
Housing Material Thermoplastic, UL94 V-0
Net Weight Per Unit 0.16Lb (71g)
Package Dimension (W×D×H) 0.9"×2.0"×3.1" (24mm×51mm×78mm)
19" Rack Mounting Installation

Connection Diagram

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