| 摘要 |
The present invention is directed to a thermal magnetic circuit breaker for protecting an electrical circuit from damage by overload, a thermal trip device and a switching device of the thermal magnetic circuit breaker and a method for protecting an electrical circuit from damage, wherein an electric conductive bimetal element 1 is arranged with its first end 1.1 next to a current conductive element 3 for conducting electrical current and with its second end 1.2 next to a tripping element 20 adapted to trigger an interruption of a current flow. A resistor element 2 is arranged between the bimetal element and the current conductive element in order to redirect the electrical current at least partially via the bimetal element, when an overload occurs. The resistor may be a negative temperature coefficient (NTC) thermistor. |
