Suzhou Industrial Park Kejia Automation Co., Ltd.
Main products:NKP Power SPD series,KDY Power SPD series,NKP Signal SPD series,KTL Signal SPD series,Power Distribution Unit
Contact Us
  • Contact Person : Ms. Lou Sandy
  • Company Name : Suzhou Industrial Park Kejia Automation Co., Ltd.
  • Tel : 86-512-65151966
  • Fax : 86-512-65111396
  • Address : Jiangsu,SuZhou,85 Kilometers Away From Alongside the National Highway 312 of Suzhou Industrial Park
  • Country/Region : China
  • Zip : 215001

three phase AC220 SPD/ surge arrester

three phase AC220 SPD/ surge arrester
Product Detailed
Power SPD 20KA,standard type MOV SPD 1, Test standard: IEC61643-1 2, Imax: 20kA, In: 10kA, Up: 1.5 kV 3, 20 years` experienc


Surge protective Device (surge protection device, SPD )  provides protection against surge current resulted from direct or indirect lightning strike or similar surge voltage. SPD is applicable to circuit with rated voltage up to 320V~, rated frequency 50/60Hz.The product, using metal oxide varistor,  designed to protect both phase and neutral line, is of high electricity resistance under normal operations. In case of surge current or voltage caused by lightning strike or similar, SPD functions quickly conduct the surge voltage/current to earth and thus effectively prevent the downstream equipments of its protected line from destruction. SPD resumes its high electricity resistance to secure normal operation of the protected power network without presence of the surge voltage.


1. protection of heavy-loaded electrical circuits from overload2. used to protect not only particular consumers/circuits, but also the whole panel3. Pillar terminal with clamp4. On-Off indicating window:5. Green: normal function6. Red: functionless,  immediate replacement required7. Connection capacity: rigid conductor 25mm2

 Technical parameter

Model and specification


No. of poles


Power supply system


Protection grade

C class

Nominal voltage Un(V)


Max. continuous operating voltage Uc(V)


Voltage protection level Up(kV)-Less than


Max. discharging current(8/20 us) Imax(kA)


Normal discharging current (8/20 us) In(kA)


Status indication

Mechanical flag

Remote contacts


Response time(ns)


Ambient temperature

-40°C to +80°C

Relative humidity

On condition that room temperature 30% to 90%

Shell material


Protection level



35mm DIN rail, EN 60715 standards

Test grade

GB18802.1/IEC61643-1 standards

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