The Siemens 3VA1132-5EF36-0BA0 is a SENTRON 3-pole molded case circuit breaker (MCCB) rated 32 A continuous, built for line protection duty. It carries a TM240 thermal-magnetic trip unit — fixed thermal and magnetic settings for straightforward overcurrent and short-circuit protection on distribution feeders. Interrupting capacity is the headline number here: 187 kA at 240 V AC, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500 V and 690 V. That 187 kA at 240 V means this breaker handles high-fault-current points like a main or sub-feed in a large distribution panel without cascading upstream — the SCCR is the figure that decides whether it clears a bolted fault or welds shut. Thermal derating is flat to 50 °C (32 A), then drops to 31 A at 55–60 °C and 30 A at 65–70 °C. That matters for panel fill: if the breaker sits in a hot enclosure or next to high-wattage contactors, you need the 30 A column for the real load limit, not the nameplate 32 A.
Sourcing & Lifecycle
The base switch variant is 3VA11325EF360AA0, which is the same breaker without the undervoltage release. If you are stocking spares for multiple 3VA1 panels, that base code is the common core; the -0BA0 suffix adds the UVR module.
Integration & Mounting
Three-pole, 76.2 mm wide (3 inches) — standard 3-pole MCCB footprint for a 4-module DIN-rail or panel-mount cutout. Depth is 70 mm, height 130 mm. Fits the same panel space as other SENTRON 3VA1 three-pole frames; no re-drilling needed if swapping within the family. Rated insulation voltage is 800 V, so it is comfortable on 480/277 V and 600 V systems with margin. Undervoltage release (UVR) is fitted — that coil drops the breaker if control voltage is lost, common for emergency-stop chains or undervoltage protection schemes. Maximum power loss is 13.1 W at rated load. That is modest for a 32 A MCCB, but in a densely packed panel with multiple breakers, the cumulative heat matters — account for it in the enclosure thermal calculation.