Siemens 3VA2163-5HL32-0AJ0 — SENTRON 3VA2 MCCB, 63 A, 3-Pole, Line Protection
The Siemens 3VA2163-5HL32-0AJ0 is a SENTRON 3VA2 molded case circuit breaker (MCCB) rated for 63 A continuous current across the full ambient range from 40 °C to 70 °C, with no derating required within that window. This 3-pole unit is designed for line protection and carries a maximum breaking capacity of 187 kA at 240 VAC, 121 kA at 415 VAC and 440 VAC, 75.6 kA at 500 VAC, and 3.7 kA at 690 VAC — figures that define its fault-clearing capability at the point of common coupling. The adjustable thermal-magnetic trip unit covers a range from 95 A minimum to 756 A maximum, giving the specifying engineer headroom to coordinate with downstream branch protection. Rated insulation voltage is 800 V, and the breaker operates from -25 °C to 70 °C ambient, with storage limits from -40 °C to 80 °C.
The 187 kA at 240 V and 121 kA at 415 V place this MCCB in the high-interrupting category for 3VA2 frame sizes — suitable for installations with high available fault current, such as transformer secondaries or large motor control centers. Maximum power loss is 4 W, which keeps thermal contribution to the enclosure low.
Physical Integration and Auxiliary Wiring
A trip indicator is present for local visual fault indication. The underlying basic switch variant is 3VA21635HL320AA0, which means replacement of the switching mechanism alone is possible without swapping the entire chassis.