The Siemens SENTRON 3VA1163-6EF32-0AH0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current Iu of 63 A. Its interrupting capacity hits 220 kA at 240 V, 154 kA at 415 V, and 121 kA at 440 V — numbers that tell you it's sized for high-fault industrial distribution, not light commercial panels. The TM240 thermal-magnetic release is fixed, no electronic trip unit, no communication module, no undervoltage or shunt trip fitted from the factory.
What the ratings mean for fit
The 63 A rating holds flat from 40 °C to 50 °C — no derating in that band. At 55 °C it drops to 60.48 A, at 60 °C to 59.22 A, and at 70 °C to 56.7 A. If your panel ambient sits at 55 °C and you need the full 63 A continuous, this breaker won't deliver it; you'd need to step up a frame size or ventilate the enclosure. The 220 kA at 240 V is the headline number, but the 17 kA at 690 V is the one that matters if you're on a 690 V IT system — that's still a robust figure for most industrial feeds, but verify it against your transformer's prospective fault current.
Panel fit and integration
The breaker measures 76.2 mm wide, 130 mm tall, and 70 mm deep — a standard 3-pole MCCB footprint that drops into a SENTRON panelboard or a DIN-rail adapter without surprises. The front face carries an IP40 rating, so it's fine inside a closed panel but not for washdown zones. It ships with 2 auxiliary switches plus 1 trip alarm switch (HQ type), which gives you remote status on the breaker position and a separate alarm contact that closes only on a trip — useful for a PLC digital input that flags a fault without polling the aux on a manual open.