What this MCCB is and what it carries
The Siemens 3VM1112-3ED22-0AA0 is a 2-pole SENTRON molded case circuit breaker (MCCB) rated for line protection, fitted with a TM210 thermal-magnetic overcurrent release. It carries 125 A continuously at 40 °C, derating to 114 A at 70 °C — the full thermal curve is on the nameplate, so no guesswork when the panel runs hot. Interrupting capacity is 76 kA at 240 V AC and 53 kA at 415 V AC — that puts it well past the typical 25–35 kA SCCR for most industrial distribution panels, so it handles high-fault scenarios without cascading upstream. Rated insulation voltage is 500 V, and the maximum DC operating voltage is 250 V — useful if this lands in a mixed AC/DC sub-panel.
Panel fit and mounting
Dimensions are 70 mm deep by 50.8 mm wide by 130 mm tall — a standard 2-pole MCCB footprint that drops into most DIN-rail or base-mount enclosures without re-drilling the gland plate. IP40 on the front means it's fine for indoor panel use; keep it out of washdown zones unless it's behind a sealed door. Max power loss is 16 W — negligible for thermal budget in a ventilated enclosure, but worth noting if you're packing breakers tight in a sealed box.
What the TM210 release means for coordination
The TM210 is a fixed thermal-magnetic release with an adjustable long-time pickup up to 1250 A — that's the li max setting for short-circuit protection, not the continuous rating. The continuous rating is fixed at 125 A via the thermal element. For selective coordination downstream, the magnetic trip threshold is set at the factory; no field-adjustable short-time delay on this release. No undervoltage release, no shunt trip, no motor drive, no communication module — this is a plain-vanilla line-protection breaker. If you need remote trip or status feedback, step up to the 3VA series with the electronic release and accessory slot.