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Approvals & Standards

  • ANSI/UL 1449 4th Edition, Type 1 Component Assembly SPD, File E210793
  • ANSI/IEEE C62.41.1, C62.41.2, C62.45
  • RoHS Compliant

Key features & benefits

Surge-Trap® Modular Surge Protective Device (SPD) is a no-fuse, fail-safe surge suppressor featuring Mersen’s patented TPMOV® technology inside. UL 1449 4th Edition approved, it is DIN-rail mountable featuring a fail-safe self-protected design, visual indicator, and a small footprint. A remote indicator option provides status to critical control circuitry. The Surge-Trap Modular SPD has a high short circuit rating and a thermally protected MOV, which eliminates the need for additional overcurrent protection devices.

More specifications


  • AC/DC distribution
  • Power supplies
  • Industrial automation *Telecommunications
  • Motor controls and starter systems *Programmable logic controller (PLC) applications
  • Power transfer equipment
  • HVAC applications
  • AC drives
  • UPS systems
  • Security systems
  • IT / Data centers
  • Medical equipment

Product Specifications

Item Number


Item Description (ERP)

SPD ST PV 1000V 3W MS  


SPD - Modular ST Series 1000V 50 kA 3-pole Microswitch Ind  

EAN/UPC code


ROHS Compliant



Type 1 Component Assembly  

Nominal Operating Volt Rating (Un)

1000   V

AC or DC


Nominal Discharge Current (In) (8/20)

20 kA  

Max Discharge Current : Imax (8/20)

50 kA per phase  

System Configuration


Short Circuit Current Rating (SCCR)

200 (most models)   kA

Number of Poles


Wiring range

#6 to #14 AWG  

Contact materials

Zinc-Plated Steel  

Connection/Terminal Type


Housing Material

PET (Polyethelene Terphthalate)  

MOV Response Time

<25 ns  

Number of Wires

3 Wire  

Installation Mounting

DIN Rail  

Product Weight

0.3856   kg

Product Width

53.3   mm

Product Length

90.9   mm

Product Height

68.6   mm

Sell Pack Quantity

1   Each

Sell Pack Width

73.2   mm

Sell Pack Length

124   mm

Sell Pack Height

69.8   mm