This 3VA1132-4EF32-0BC0 is a Siemens SENTRON molded case circuit breaker rated 32 A continuous at 40 °C ambient, with a 121 kA interrupting capacity at 240 V — that SCCR handles high-fault utility feeds without cascading upstream breakers. At 415 V the interrupting rating is 75.6 kA, at 440 V it's 52.5 kA, and at 500 V or 690 V it holds 11.9 kA. The 800 V rated insulation voltage means it's safe for 480 V and 600 V class panels. It's a 3-pole, line-protection design, meaning it's sized for feeder or main breaker duty rather than motor branch-circuit protection — no thermal-magnetic curve for motor starting inrush.
Mounts on DIN rail or panel-mount via the base. Dimensions: 130 mm height, 76.2 mm width (3 in), 70 mm depth. The 3-pole footprint fits standard SENTRON 3VA1 panel cutouts. Maximum power dissipation is 13.1 W — factor that into enclosure thermal calculations if the panel is sealed. Operating temperature range is -25 °C to 70 °C; storage from -40 °C to 80 °C.
This variant includes an undervoltage release (UVR) and two HQ auxiliary switches. The UVR trips the breaker if control voltage drops below a threshold — common for emergency-stop circuits or undervoltage protection on critical loads. No communication function, no ground-fault monitoring, no voltage trigger, no trip indicator. The supplied basic switch is 3VA11324EF320AA0.