The Siemens SENTRON 3VA2063-5KP32-0HL0 is a 3-pole molded case circuit breaker rated for 63 A continuous current across the full ambient range from 40 °C through 70 °C — no derating needed up to that ceiling. Its interrupting ratings climb to 187 kA at 240 V, dropping to 121 kA at 415 V and 440 V, then to 75.6 kA at 500 V, and 3 kA at 690 V.
Line protection with a communication backbone
That saves a maintenance tech from walking the panel to read a flag. The auxiliary switch configuration includes 2 auxiliary switches plus a trip alarm switch and an electrical alarm switch, giving you four discrete signals for remote indication. A shunt trip release (STL) is built in, letting a safety relay or emergency-stop circuit drop the breaker remotely. There is no undervoltage release, so if your scheme relies on UVR for undervoltage protection, plan for an external relay.
Maximum power loss is 5.4 W — negligible for panel thermal calculations, but worth noting if you pack multiple breakers in a sealed enclosure.
Trip indication and measurement
The other measurement function suggests the electronic trip unit can log or communicate additional data like current draw or fault magnitude — useful for predictive maintenance or post-event analysis. The basic switch assembly is order code 3VA20635KP320AA0, which is the internal switching mechanism; if you ever need to replace just that subassembly, that's the part number.