MCCB for line protection — 63 A, 4-pole, 440 kA interrupting capacity
The SENTRON 3VA2163-8JQ46-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 63 A continuous current, designed specifically for line protection in distribution panels. Its 800 V rated insulation voltage gives headroom for 400/480 VAC systems common in industrial switchgear. 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. Rated current holds flat at 63 A across the full ambient range from 40 °C to 70 °C — no derating needed in a warm enclosure. 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.
Panel fit — dimensions and integration
The breaker measures 140 mm wide, 181 mm high, and 86 mm deep — a standard 4-pole MCCB footprint that fits most DIN-rail or panel-mount enclosures. The 86 mm depth is the dimension to check against enclosure door clearance or busbar shroud depth.