• AT500PM
  • AT500PM
  • AT500PM

AT500PM

The AT500 series are designed to meet the high electrical capacity requirements of electric water heaters. AT500PM uses a temperature sensitive bimetal disc to deliver snap-action to the contacts. The speed and force of contact separation provides long-dependable control life at high electrical loads.
Model : AT500PM

The AT500PM manual reset temperature limit from Accutherm offers proven reliability in a compact, versatile, cost–effective design. The bimetal disc’s snap–action provides high–speed contact separation resulting in excellent life cycle characteristics at electrical loads up to 50 amps at 277 VAC. The AT500PM can be supplied in combination with our adjustable water heater control as an industry standard electric water heater temperature control/limit.

  • Electric Rate: AC 250V/50A
  • Open Temp. Range: 45~130°C
  • Accuracy: ± 3°C/5 °C
  • Manual Reset Temp.: 40°C below open temperature or at 25°C room temperature
  • Resistance: 50mΩ



  • 10–32 tin plated terminal screws for electrical connections
  • available with surface mount tabs  
  • Double pole, single throw (”M2 Trip Free” construction)
  • Welded construction used on all internal current carrying components for greater electrical integrity



  1. Commercial Coffee Machine
  2. Storage/Instant water heater

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