The Siemens SENTRON 3VA1132-3EF36-0AB0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying 32 A continuously at 40 °C with a TM240 thermal-magnetic release. Its interrupting capacity hits 75.6 kA at 240 V, dropping to 52.5 kA at 415 V and 32 kA at 440 V — numbers that matter when you're coordinating downstream branch protection and need the SCCR to hold under fault. Rated insulation voltage is 800 V, so it's comfortable in 480 V and 600 V class panels. Max power loss is 10.6 W, which is manageable for enclosure thermal budgeting.
What the ratings mean for fit
The 32 A rating holds across ambient temperatures from 40 °C through 50 °C without derating; at 55 °C it drops to 31 A, and at 70 °C to 30 A. So if your panel runs hot near the top of the enclosure, you still have 30 A of headroom. The TM240 release means the thermal element is fixed at 240 A frame — the breaker is adjustable via the magnetic pickup only, not the thermal. That's a standard line-protection characteristic, not a motor-protection curve. The 75.6 kA interrupting rating at 240 V gives solid selectivity headroom for a 22 kA or 25 kA available fault current at the panelboard; at 480 V the 52.5 kA still covers most industrial services.
Panel integration
Mounts on DIN rail — the 70 mm depth and 76.2 mm width fit standard 3-pole MCCB footprints. The 130 mm height clears most enclosure gutters. Two auxiliary switches (HP design) are built in, so you can wire status feedback without an add-on module. No undervoltage release, no ground-fault monitoring, no communication function on this variant — it's a straight thermal-magnetic breaker for distribution panels where remote trip or GFCI isn't required.