The Siemens SENTRON 3VA2163-5HL32-0HA0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current across the full 40 °C to 70 °C ambient range — no derating needed up to that ceiling. The built-in shunt trip (STL) lets a remote signal or emergency-stop circuit force the breaker open without a manual handle throw, which is useful for safety circuits or remote disconnect scenarios.
This MCCB carries a 187 kA interrupting rating at 240 V, dropping to 121 kA at 415 V and 440 V, then 75.6 kA at 500 V, and 3.7 kA at 690 V. The 63 A continuous rating holds steady across the ambient range, so no fudging the schedule if the panel runs hot.
What the shunt trip means for your control scheme
The shunt trip (STL) is a separate voltage-triggered release that opens the breaker when a control voltage is applied. It's not a fail-safe mechanism — if the control signal drops, the breaker stays closed. That makes it suitable for remote trip from a PLC output, an E-stop relay, or a fire-alarm panel, but not for undervoltage protection. The part does not include a ground-fault monitoring module, so if you need GFCI-level protection at the main, that's a separate add-on or a different variant.