What this MCCB carries and where it fits
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. That 187 kA figure at 240 V tells you this breaker is built for high-fault panels where downstream coordination matters; the 121 kA at 415 V still covers most industrial distribution boards. The 86 mm depth and 105 mm width fit standard MCCB mounting footprints, and the 181 mm height leaves room for gland plates above.
Line protection with a communication backbone
This breaker is designed for line protection — feeder and distribution circuits — and carries a communication function so it can report status and trip events back to a PLC or BMS. 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.
Environmental and storage limits
Storage temperature spans -40 °C to 80 °C, so it can sit in an unheated warehouse or a hot container without damage. Operating ambient is -25 °C to 70 °C, which covers most indoor panel environments. 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
A trip indicator and voltage trigger are present, so the breaker gives local and remote trip confirmation. 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.