| 摘要 |
A connection verifying trip unit includes a microprocessor circuit and a terminal electrically connected to the microprocessor circuit. A power source is electrically connected intermediate the terminal and the microprocessor circuit. The terminal is electrically connected to ground when the terminal is connected to the circuit breaker. When the terminal is disconnected from the circuit breaker, the terminal is disconnected from ground and the power source provides an input signal to the microprocessor circuit. In response to the input signal, the microprocessor unit provides an output signal indicating, locally or remotely, that the trip unit has been disconnected from the circuit breaker.
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