Skip to content

ICM Controls ICM518 240 VAC Split Phase Surge Protective Device

Save 5%
Original price $78.06
Current price $73.95
Currently 20 in stock.

ICM Controls ICM518 240 VAC Split Phase Surge Protective Device

The ICM518 is a UL Listed Type 1&2  Whole Home Surge Protective Device for 240 VAC Split Phase configuration. When a surge occurs, the ICM518 will absorb the surge up to the limits expressed in the specifications section of this guide. The ICM518 incorporates thermal protection on the surge elements (TMOV’s) which allows for safe disabling of the surge protector when a surge exceeds the thermal limits of the device. A status light on the ICM518 identifies proper operational status when illuminated. The ICM518 can be installed as a Type 1 or Type 2 device for both indoor and outdoor applications.

  • Type 1 or Type 2 Whole Home SPD
  • Easy 3-wire installation 
  • 3/4” conduit connection 
  • Green LED indicator tells whether the device is operational 
  • Low cost, high performance 
  • Rugged and reliable 
  • UL Listed
  • NEMA Type 4X watertight enclosure for indoor/outdoor use 
  • Surge protection technology: Thermally protected MOVs (TFMOV) 



  • Service voltage: Split Phase 240 VAC 
  • Short Circuit Current Rating (SCCR): 200 kA 
  • Nominal discharge current (In): 20kA 
  • Maximum Surge Current: 100,000 amps
  • SPD type: Type 1 (Can also be used in Type 2 applications) 
  • Surge protection technology: TFMOV 
  • Protection mode: L1-L2, L1-N, L2-N 
  • Maximum Continuous Operation Voltage (MCOV): L-L: 300VAC  L-N: 150VAC 
  • Input power frequency: 50/60Hz 



  • ASCO: 420120S

  • Eaton: SP1-240S, SP2-240S

  • ERICO (Critec): TDX50C240

  • Generac: G0073000

  • Intermatic: AG2401C3, IG1200RC3, IG1240RC3, IG3240RC3

  • Leviton: 55240-ASA

  • MARS: 83905

  • Siemons: TPS3A