Four poles, line-protection design, with an integrated ground-fault monitoring function that uses summation current formation on the L + N conductor. Breaking capacity reaches 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V.
The 86 mm depth keeps it clear of shallow gland plates and backpanel wiring troughs.
Ground-fault monitoring via summation current formation on L+N detects leakage without a separate core-balance CT — saves a DIN-rail slot and wiring. The communication function allows the breaker to report status and trip events to a PLC or BMS over the plant network.