Description
The ABB SPAJ142C RS611006-AA is a combined overcurrent and earth-fault relay.
- Overcurrent: This is when too much current flows through a circuit, which can happen due to a short circuit. The relay can detect this and trip the circuit breaker, isolating the fault and preventing damage to equipment.
- Earth fault: This is a fault where current leaks to the ground (earth). This can be dangerous as it can cause shocks or fires. The earth-fault relay can detect this type of fault and trip the circuit breaker to isolate the problem.
The SPAJ142C is designed for use in radial feeders, which are electrical circuits with a single source of power. It can be used in solidly earthed, resistance earthed, or impedance earthed power systems.
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