The protector is formed by a protective coil together with a curve D main circuit breaker (MCB).
IGA TEST protectors actuate when detecting a temporary overvoltage, for example a failure on the neutral, cutting off the power supply and thus, protecting the equipments installed downstream.
To restore the IGA TEST it is necessary to reconnect the protective coils in advance using the RESET button. Proceed always from the most external to the one closer to the MCB.
IGA TEST protectors against permanent overvoltages can be installed in combination with ATSUB-D transient overvoltage protectors.
The curve D MCB integrated is available in the most usual nominal currents: 63, 80, 100 and 125A.