A 100mA sensitivity level is specifically utilized for fire protection in residential circuits where 30mA units might experience nuisance tripping but 100mA prevents thermal ignition of materials. The 2-pole configuration ensures total isolation of both phase and neutral during a fault, while the 500A making/breaking capacity effectively manages the initial surge current of connected household loads. With a 10kA conditional short circuit rating, it remains durable during heavy electrical faults when used with an upstream MCB.
