Thermal Circuit Breakers Manufacturers

Thermal circuit breakers are actuating by a temperature rise inside a heat-responsive bimetal strip or disk. During a current overload, electrical resistance increases the temperature of the bimetal causing it to deflect and eventually trigger the trip mechanism. Thermal breakers are the least likely to nuisance trip. These are useful in applications having high surge currents or where high current inrushes accompany the start of electric motors, transformers, and solenoids. Thermal circuit-breaker reaction time is affected by ambient temperature.