Siemens 3VA1063-3ED42-0CA0 — SENTRON 4-Pole MCCB, 63 A, TM210 Release
The Siemens 3VA1063-3ED42-0CA0 is a SENTRON molded case circuit breaker (MCCB) rated for 63 A continuous current at 40 °C, with a 4-pole configuration and a TM210 thermal-magnetic overcurrent release. It carries a rated insulation voltage of 800 V and delivers a breaking capacity of 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at 690 V — figures that define its fault-interruption capability across common industrial voltage levels. The TM210 release means the thermal element and magnetic trip are factory-set for line protection (cable and busbar protection), not motor or generator protection. That makes it a fit for feeder circuits in distribution panels where the priority is conductor protection against overload and short circuit.
Breaking Capacity — What It Means for Coordination
At 415 V, the 52.5 kA breaking capacity sits well above typical utility fault levels for most industrial services (often 25–50 kA). That headroom simplifies selective coordination downstream — the MCCB can clear a fault without upstream devices needing to trip, which keeps the rest of the panel live during a branch fault. At 690 V the rating drops to 7.5 kA, so in 690 V systems the available fault current must be verified against that lower ceiling. The part is still usable in those circuits, but coordination studies need to account for the reduced interrupting capability at higher voltage.
Current Derating and Ambient Temperature
The 63 A rating holds from 40 °C through 50 °C. Above that, the continuous current must be derated: 60.48 A at 55 °C, 59.22 A at 60 °C, 57.96 A at 65 °C, and 56.7 A at 70 °C. If the panel ambient runs hot — near a drive cabinet or in a non-conditioned enclosure — the actual load current must stay below the derated value at the installed temperature. Operating temperature range is -25 °C to +70 °C, with storage from -40 °C to +80 °C. The front face carries IP40 protection — suitable for indoor panel mounting where tools or fingers are the main intrusion risk, but not for washdown or dust-exposed locations.
Undervoltage Release and Auxiliary Options
This variant includes an undervoltage release (UVR) as the auxiliary release type. The UVR trips the breaker when supply voltage drops below a set threshold — a standard requirement for machinery safety circuits and for preventing motor re-acceleration after a power dip. It ships without auxiliary contacts or a shunt trip, and without a voltage trigger or communication module. The integrated auxiliary trip is order code 3VA9608-0BB24, which can be sourced separately if field retrofitting is needed. No ground-fault monitoring or phase-failure detection is built in.
Panel Fit and Dimensions
Dimensions are 70 mm depth, 101.6 mm width, and 130 mm height. The 101.6 mm width (4-inch nominal) matches the standard footprint for a 4-pole MCCB in a distribution panel, so it drops into existing SENTRON or comparable DIN-rail or panel-mount cutouts without enclosure modification.