MCCB for line protection — 63 A, 4-pole, 440 kA interrupting capacity
The interrupting capacity climbs to 440 kA at 240 V, dropping to 330 kA at 415 V and 440 V, 220 kA at 500 V, and 52.5 kA at 690 V — a curve that tells you this breaker is built for high-fault locations like transformer secondaries or main feeders where available fault current is substantial. The 3.1 W maximum power loss is modest for a 63 A frame; panel ventilation requirements stay minimal.
Ground-fault and communication provisions
This variant includes ground-fault monitoring via summation current formation on L + N conductors — it sums the phase and neutral currents to detect leakage. A communication function is built in, which means it can interface with a higher-level monitoring system for remote trip indication or load management. No undervoltage release or voltage trip is fitted; this is a straight overcurrent + ground-fault device.