Rated breaking capacity reaches 121 kA at 240 V and 75.6 kA at 415 V, dropping to 52.5 kA at 500 V and 3 kA at 690 V. At 690 V the 3 kA rating means this breaker is not intended for 690 V motor circuits with high available fault current — that application would need a higher-rated frame.
Ground-Fault Monitoring and Auxiliary Functions
This variant includes summation-current ground-fault monitoring on the line conductor, which detects leakage by summing the phase currents through a single core-balance transformer. Maximum power loss is 5.4 W, so heat dissipation in a sealed enclosure is manageable.
The 86 mm depth (3.39 in) leaves clearance for rear-access bus connections in a typical 600 mm deep enclosure.