Circuit breaker switching off/on coil with self-protection function
A circuit breaker and self-protection technology, which is applied in the field of opening coils of power circuit breakers, can solve problems such as affecting power supply, long power failure time, burning opening (closing) coils, etc. simple effect
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[0014] attached figure 1 The circuit breaker opening (closing) coil with self-protection function of the present invention is composed of a traditional circuit breaker opening (closing) coil (1) and a PPTC element, and is characterized in that the PPTC element is the same as the traditional circuit breaker opening (closing) coil (1). closing) brake coils (1) are connected in series to form a circuit breaker opening (closing) brake coil (2) with self-protection function. Taking the opening (closing) gate current of 2 amps as an example, select the appropriate PPTC component. According to the field test, the opening (closing) coil of the circuit breaker will not burn out within 7 seconds after the rated current is applied, and the normal operating time of the circuit breaker is 100 Within milliseconds, check the characteristic curve of the PPTC component and select a 200-500 mA PPTC component. Test the PPTC element by passing a 2A current to ensure its operating characteristics...
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