The 90 AM range, in addition to auxiliaries common for the all circuit breakers, comprises many modular accessories for the protection, command, programming, measurement and signalling in electrical systems.
NOTES: it is necessary to use a MCB and a shunt trip release for correct working of the device APPLICATIONS: protection of single-phase electrical system both from voltage transients indirect (produced by discharges from lightning or switching operations on the network) to permanent overvoltages (produced by instable networks or neutral loss). When permanent overvoltages occurs, SPD+POP devices use release coil to open circuit breaker. Instead, when transient overvoltages occurs, SPD+POP device works as a common surge protective device without opening the circuit breaker.
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