What it is and what it does
The Siemens 3VA1132-3EF36-0KH0 is a SENTRON molded case circuit breaker (MCCB) for line protection, rated 32 A continuous at 40 °C ambient and carrying a 3-pole, 75.6 kA interrupting capacity at 240 V. It sits in a standard panel or enclosure footprint — 130 mm tall, 76.2 mm wide, 70 mm deep — and is designed for fixed mounting, not plug-in. Breaking capacity drops as voltage climbs: 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V. That curve tells you this breaker is sized for 480 V distribution panels where the available fault current stays under 50 kA; at 690 V it's still adequate for moderate-fault systems.
Ratings that matter for fit
The 32 A rating holds from 40 °C through 50 °C, then derates to 31 A at 55 °C and 30 A at 70 °C. If your panel ambient runs hot — say, a crowded enclosure near a furnace line — plan for the derated current, not the 32 A nameplate. Rated insulation voltage is 800 V, so the breaker's internal clearance and creepage are designed for 690 V line-to-line systems with margin. The supplied basic switch carries order code 3VA11323EF360AA0; auxiliary switch config is 2 aux + 1 trip alarm (HQ), and a shunt trip (STL) is built in as the auxiliary release. Power loss is 10.6 W maximum — modest for a 32 A MCCB, but in a sealed, non-ventilated enclosure with several breakers side by side, that heat adds up. Factor it into your thermal budget if you're populating a row of these.
Lifecycle and sourcing
Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing confirmed at quote time.
What's on the van?
If you're swapping a failed MCCB on site and the panel was built around a 5SQ2370-2YA05 or similar 32 A 3-pole frame, this 3VA1 drops into the same DIN-rail or backplate footprint — same pole count, same 32 A rating, same 75.6 kA class at 240 V. No rewiring needed if the lug type matches; just confirm the shunt trip and aux switch wiring before you button it up.