63 A MCCB with TM210 release — what the ratings mean for your panel
The Siemens SENTRON 3VA1063-2ED42-0KC0 is a 4-pole molded case circuit breaker rated for line protection duty, carrying 63 A continuously at 40 °C through 50 °C without derating. Above 55 °C the current tapers — 60.48 A at 55 °C, 59.22 A at 60 °C, 57.96 A at 65 °C, 56.7 A at 70 °C — so if your panel ambient runs hot, the continuous current you can actually pull is lower than the nameplate 63 A. The TM210 thermal-magnetic release handles overloads and short circuits; the 32 kA breaking capacity at 415 V tells you this breaker can safely interrupt a fault up to that level on a 400 V distribution bus without upstream damage.
Breaking capacity across voltage levels
The interrupting rating drops as system voltage rises: 52.5 kA at 240 V, 32 kA at 415 V, 13.6 kA at 440 V, and 7.5 kA at 690 V. For a 400 V panel the 32 kA figure is the one that governs SCCR coordination — make sure your available fault current sits below that threshold.
Integrated shunt trip and auxiliary contacts
This version ships with a shunt trip (STL) release built in — the design of the auxiliary release is the shunt trip type — plus two auxiliary switches (HQ). The shunt trip lets you remotely trip the breaker from a PLC output or emergency-stop circuit; the auxiliary contacts report the breaker position back to the control system. No undervoltage release, no ground-fault monitoring, no phase-failure detection on this variant, so if your application needs those, this isn't the order code.