Molded case circuit breaker for motor protection
The Siemens SENTRON 3VA2163-5MN32-0BC0 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 that ceiling. Its interrupting capacity at 240 V is 187 kA, dropping to 121 kA at 415 V and 440 V, then to 75.6 kA at 500 V, and 3.7 kA at 690 V. This is a motor-protection design with integrated undervoltage release and phase failure detection, per the product designation.
Panel layout and bus-bar spacing should accommodate these dimensions; verify cutout and mounting hole pattern against the existing panel design.
Electrical characteristics and protection
Maximum power loss is 6.5 W. It does not include a ground-fault monitoring module or communication function. The auxiliary switch configuration is two HQ auxiliary switches. The supplied basic switch order code is 3VA21635MN320AA0.
