The Siemens SENTRON 3VA1063-4ED36-0DC0 is a 3-pole molded case circuit breaker rated for 63 A continuous current at 40 °C, with a TM210 thermal-magnetic overcurrent release. It's a line-protection device — no ground-fault monitoring, no communication module, no voltage trigger. The interrupting ratings are 121 kA at 240 V and 75.6 kA at 415 V, which gives you headroom for high-fault panels without cascading upstream. The 70 mm depth and 76.2 mm width fit standard MCCB footprints on a DIN rail or panel-mount base.
Current rating and thermal derating
Rated continuous current Iu is 63 A, and it holds that rating from 40 °C through 50 °C. 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, size the load side accordingly — the breaker won't trip early, but you lose about 6 A headroom at the top of the operating range.
Interrupting capacity and selectivity
The 3VA1063-4ED36-0DC0 delivers 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V. That 75.6 kA at 415 V is the figure to check for most European industrial panels — it's well above typical utility fault levels, so you can coordinate downstream breakers without worrying about the main failing to clear a bolted fault. The rated insulation voltage is 800 V, which covers 690 V line-to-line systems with margin.
Auxiliary contacts and undervoltage release
Comes with 2 auxiliary switches (HQ version) and an integrated undervoltage release (UVR). The UVR is wired separately — if the control voltage drops, the breaker trips. That's useful for emergency-stop circuits or undervoltage protection on motor feeders. The auxiliary switches give you status feedback to a PLC or indicator lamp without adding an external contact block. The integrated auxiliary trip order code is 3VA9608-0BB25, which is the factory-fit accessory if you need to replace it.
Physical fit and panel integration
Dimensions: 130 mm height, 76.2 mm width, 70 mm depth. That's a standard 3-pole MCCB footprint — fits the same cutout and DIN-rail adapter as other SENTRON 3VA breakers. IP40 on the front means it's protected against tools and wires >1 mm, but not against dust ingress; mount it inside an enclosure if the environment is dirty. Storage range is -40 °C to 80 °C, so it can sit in an unheated warehouse without issue.