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What is the recommended connection type for Fire Alarm Relay Module (Normally Open or Normally Closed contact ) to shunt trip (Electrical Circuit breaker disconnecting such as feeder serving Elevators or pre-action protected room)

Question asked by saadu10 on Sep 5, 2016

What is the recommended connection type for Fire Alarm Relay Module (Normally Open or Normally Closed contact ) to shunt trip (Electrical Circuit breaker disconnecting such as feeder serving Elevators or pre-action protected room)

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