Seismic breaker switch is designed for safe interruption of power supply, eg. for a refuelling system or polar crane. This system performs the highest safety function according to EN 61226 and is developed on a platform of ZAT-RA.
How does it work?
Disconnection of power supply is controlled either automatically, through receiving the signals from protection system or manually with a local button placed on the seismic breaker switch desk.
Repeated connection of power supply is only possible manually by turning the enabling controller that is protected against unauthorized activation (with a key). The switch gives signals to the operating staff on presence of power supply 400VAC, state of the switch, state of the switch internal logic, failure and result of test.