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Combined overcurrent and earth-fault relay SPAJ 141C


Not active product since 2011

The combined overcurrent and earth-fault relay SPAJ 141 C is intended to be used for the selective short-circuit and earth-fault protection of radial feeders in solidly earthed, resistance earthed or impedance earthed power systems. The integrated protection relay includes an overcurrent unit and an earth-fault unit with flexible tripping and signalling facilities. The overcurrent and earth-fault relays can also be used for other applications requiring single-, two-, or three-phase overcurrent protection and earth-fault protection. The combined overcurrent and earth-fault relay includes a circuit-breaker failure protection unit.

The combined overcurrent and earth-fault relay SPAJ 141 C is part of ABB’s Distribution Automation concept extending ABB’s solution for the control and management of electric power systems.

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