The Siemens SENTRON 3VA1132-3EF32-0KA0 is a 3-pole molded case circuit breaker (MCCB) rated for 32 A continuous current at 40 °C, with a TM240 thermal-magnetic overcurrent release. It's a line-protection device — meaning it's configured to protect cables and busbars from overload and short-circuit, not motor or generator circuits. The interrupting ratings climb to 75.6 kA at 240 V and 52.5 kA at 415 V, which gives you headroom for high-fault utility feeds or transformer secondaries in industrial distribution panels. The 32 A rating holds flat from 40 °C through 50 °C, then derates gradually to 28.8 A at 70 °C — so in a warm panel you lose about 10% of capacity at the top end. That's typical for a thermal-magnetic breaker; the bimetal element responds to ambient heat. If your panel ambient runs above 50 °C, size up one frame or account for the derate curve. The shunt trip (STL) is built in — design of the auxiliary release is a shunt trip (STL), and the integrated auxiliary trip order code is 3VA9688-0BL33. That means you can remotely trip the breaker from an E-stop or safety relay without adding an external undervoltage module. No undervoltage release is fitted, and there is no auxiliary contact block, no communication function, and no ground-fault monitoring. This is a clean, basic line-protection MCCB with a shunt trip for remote opening.
Panel fit and mounting
Dimensions: 130 mm height, 76.2 mm width, 70 mm depth. The 76.2 mm width is a standard 3-pole MCCB footprint — it fits the same panel cutout and busbar spacing as other SENTRON 3VA three-pole breakers. The 70 mm depth means it clears most 200 mm deep enclosures with room for wiring gutters. Front protection is IP40, so it's protected against tools and small wires but not against water spray — keep it inside a rated enclosure. Mounting is screw-clamp or plug-in onto a busbar system; the SENTRON 3VA range uses a common base and accessory system. The shunt trip wiring connects to the breaker's internal terminals — verify polarity if the release is DC-powered, though the spec does not detail coil voltage here. The auxiliary trip order code 3VA9688-0BL33 is a separate accessory that mounts on the breaker side; it provides a signal contact for remote status indication.