www.watchfuleyesolutions.com Surge Protective Device for AC Power Supply System

Paperless Datasheet
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In accordance with: IEC 61643-1 - Class I and UL1449 Type 4 Location
Location of use: main sub-distribution boards
Built-in 7-layer High Energy GDT: Safely applied to L-PE mode to realize Class I surge protection.

Ordering Information
Model Ordering code
WTH-300/G/1P-320 US120281
WTH-300/G/1P-320 x2pcs US120281x2
WTH-300/G/1P-320 x3pcs US120281x3
WTH-300/G/1P-320 x4pcs US120281x4

Technical Data
Model WTH-300/G/1P-320
Max. Continuous Operating Voltage (Uc) 320V 50/60Hz
Dc spark-over voltage at 100 V/s >500V
Requirement Class to IEC61643-1 Class I
IEEE Category Rating C & B
Nominal Discharge Current (In) 100kA
Max. Discharge Current (Imax) 200kA
Pulsed Current (Iimp) 25kA
Residual Voltage (Ures @6kV/3kA) 1.5kV
Protection Modes L-PE, N-PE
Protective Element 7-layer High Energy GDT
Follow Current (If) 3kA rms (at 320V) / 5kA rms (at 255V)
Response Time (tA) <100ns
Leakage Current (at 75%U1mA) None
Fault Indication NO
Protection Rating (IP Code) IP 20
Short Circuit Current Ratings (SCCR) 25kA rms
Max. Back-up Fuse (if mains >315A) 315A gL (circuit-breaker: <160A)
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 35.8mm (2TE)
Housing Material Thermoplastic (UL94 V-0)
Housing Design Compact design
Net Weight Per Unit 0.57Lb (259g)
Package Dimension (W×H×D) 1.4"×3.6"×2.6" (35.8mm×90mm×66.5mm)
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
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