63 A MCCB with shunt trip — motor protection duty
The Siemens SENTRON 3VA2163-5MN36-0KA0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to the enclosure's thermal limit. The interrupting ratings climb to 187 kA at 240 V and hold at 121 kA through 415 V and 440 V, then step down to 75.6 kA at 500 V and 3.7 kA at 690 V — a curve that governs selectivity coordination downstream.
SCCR headroom and coordination
The steep drop to 3.7 kA at 690 V means this breaker is not intended for 690 V motor circuits unless the available fault current is verified below that threshold; for 690 V applications a higher-rated frame or current-limiting fuse ahead of it would be needed.
Panel integration — dimensions and mounting
No undervoltage release is fitted; the only auxiliary release is the shunt trip. The basic switch assembly is order code 3VA21635MN360AA0.
Maximum power loss is 4 W.