The Siemens SENTRON 3VA1163-3EF32-0AF0 is a 3-pole molded case circuit breaker rated for 63 A continuous current at 40 °C, with a TM240 thermal-magnetic trip unit — fixed thermal, magnetic adjustable. It's built for line protection in distribution panels, switchgear, and motor control centers where you need a compact MCCB that holds 63 A through the full 40–50 °C range and only starts derating above 55 °C (60.48 A at 55 °C, 56.7 A at 70 °C).
Interrupting capacity — what the voltages tell you
This breaker delivers 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 10.5 kA at 690 V. That's a steep drop above 440 V, so if your fault current at 690 V is anywhere near 10 kA, this unit still holds — but you're running it close to the ceiling. For most 400/415 V commercial and light industrial panels, 52.5 kA gives solid SCCR headroom without overspending on a higher-rated frame.
Panel fit and aux contacts
Dimensions are 130 mm height, 76.2 mm width, 70 mm depth — a standard 3-pole MCCB footprint that fits most DIN-rail or panel-mount enclosures without surprises. It ships with one auxiliary switch and one trip alarm switch (HQ configuration), so you get status feedback and a separate alarm contact for remote fault indication. No undervoltage release, no communication module, no ground-fault monitoring — this is a straight line-protection breaker, no extras.