What this MCCB carries and where it fits
The Siemens SENTRON 3VA1063-3ED42-0DA0 is a 4-pole molded case circuit breaker rated for 63 A continuous current with a TM210 thermal-magnetic release, intended for line protection in distribution panels and motor control centers. It breaks 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at 690 V — the interrupting rating drops as voltage climbs, which is typical for MCCBs and means you size it to the available fault current at the actual line voltage. The 70 mm depth and 101.6 mm width fit standard panel-mount cutouts; the IP40 front protection keeps dust out of the enclosure face but the breaker is not rated for washdown environments.
Thermal derating — what the 63 A rating really means
The breaker holds its full 63 A rating from 40 °C up to 50 °C ambient. At 55 °C it derates to 60.48 A, at 60 °C to 59.22 A, at 65 °C to 57.96 A, and at 70 °C to 56.7 A. If your panel ambient runs above 50 °C, you need to account for that drop when sizing the branch circuit. The rated insulation voltage is 800 V, and the operating temperature range spans -25 °C to 70 °C, with storage from -40 °C to 80 °C — wide enough for most indoor industrial environments but verify the low end if the panel sits in an unheated space.
Release and auxiliary options on this variant
This order code ships with an undervoltage release (UVR) as the auxiliary release — no shunt trip, no ground-fault module, no auxiliary contact block. The UVR will trip the breaker if control voltage drops, which is useful for emergency-stop chains or undervoltage protection on motor feeders. The integrated auxiliary trip is a separate order code (3VA9608-0BB25) — not included on the breaker. If you need a shunt trip or auxiliary contacts, you add them as field-installable accessories. Latching endurance is rated at 15,000 cycles — that is the mechanical life for the switching mechanism under normal operation.
Sourcing and lifecycle posture
No official successor has been issued for this order code, which is consistent with an active catalog line.