3VA1132-3EF36-0CC0 — SENTRON MCCB, 32 A, 75.6 kA at 240 V
The Siemens 3VA1132-3EF36-0CC0 is a 3-pole SENTRON molded case circuit breaker (MCCB) rated for line protection duty. It carries a continuous current Iu of 32 A at 40 °C through 50 °C, derating to 30.72 A at 55 °C and 28.8 A at 70 °C — a thermal curve that matters for panel fill factor and ambient placement. The TM240 thermal-magnetic release handles overload and short-circuit response without an electronic trip unit, keeping the design simple for distribution panels that don't need adjustable curves. Breaking capacity runs 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 10.5 kA at 690 V — these are the fault-clearing numbers that govern SCCR coordination downstream. The 800 V rated insulation voltage (Ui) gives headroom for 480 V and 600 V class systems. For DC network applications, the manufacturer directs to the 3VA device manual for switching power values; the part itself is not pre-rated for DC in the basic listing.
Panel integration and physical fit
Width is 76.2 mm (roughly 3 inches — three 1-inch pole spaces on a DIN rail or panel-mount footprint). Depth is 70 mm, height 130 mm. The front face carries IP40 protection, meaning it's protected against tools and solid objects over 1 mm but not sealed against moisture — standard for indoor switchgear enclosures. The 3-pole block includes 2 auxiliary switches (HQ type) and an undervoltage release (UVR) as integrated auxiliaries; the UVR trip coil is specified as order code 3VA9608-0BB24 if a replacement is needed. No communication module, no voltage trigger, no phase failure detection — this is a plain line-protection breaker, not a metering or communicating device.