63 A MCCB with TM210 — the panel-builder's pick for line protection
The Siemens SENTRON 3VA1063-2ED42-0BC0 is a 4-pole molded case circuit breaker rated 63 A continuous at 40 °C, with no derating needed until you push past 55 °C. It carries a TM210 thermal-magnetic release — fixed thermal and magnetic trip settings, no dials to mis-set on the line. Breaking capacity hits 52.5 kA at 240 V, 32 kA at 415 V, and still holds 7.5 kA at 690 V, so it handles most industrial distribution panels without a fuss. The 70 mm depth and 101.6 mm width keep it within standard MCCB footprints for retrofit into existing SENTRON or third-party bases.
What the ratings mean for a real panel
The 63 A rating holds flat from 40 °C to 50 °C — that's your typical non-climate-controlled electrical room. Above that, it steps down to 60.48 A at 55 °C and 56.7 A at 70 °C, so if the breaker lives near a furnace or in a hot rooftop enclosure, factor that into the load schedule. The 800 V rated insulation voltage (Ui) means it's comfortable in 480 V and 600 V systems with margin. IP40 on the front keeps dust out of the mechanism; the rest of the breaker is open to the panel air, so don't mount it in a washdown zone without an enclosure.
Auxiliary contacts and undervoltage release — wired from the factory
This order code ships with 2 auxiliary switches (HQ type) and an undervoltage release (UVR) integrated. The UVR drops the breaker if control voltage falls below the dropout threshold — standard for emergency-stop circuits or undervoltage protection on motor feeders. The auxiliary contacts give you status feedback to a PLC or pilot light without adding a separate block. The integrated auxiliary trip is factory-configured as a 3VA9608-0BB11 module, so replacement or spare ordering is a known part number.
Sourcing and compliance
Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing confirmed at quote time. The SENTRON series carries the usual Siemens compliance documentation — RoHS, REACH, and IEC/UL certifications are standard for the platform. No special documentation request needed for most panel builds.