Siemens 3VA1132-4EF36-0BC0 — 32 A SENTRON MCCB with TM240 release
The Siemens 3VA1132-4EF36-0BC0 is a SENTRON molded case circuit breaker (MCCB) rated for line protection in 3-pole configuration, carrying a rated continuous current Iu of 32 A. Its TM240 thermal-magnetic overcurrent release handles the overload and short-circuit trip curve for this frame size. Breaking capacity is specified per the voltage it sees: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V. That spread tells you the part is designed for high-fault-current distribution panels at low voltage, with adequate headroom for most 400 V-class industrial switchboards. The unit ships with an undervoltage release (UVR) fitted as the auxiliary release, plus two HQ auxiliary switches for status feedback. The integrated auxiliary trip is order code 3VA9608-0BB11.
Thermal derating and ambient limits
Rated current holds at 32 A from 40 °C through 50 °C ambient. Above that it derates linearly: 30.72 A at 55 °C, 30.08 A at 60 °C, 29.44 A at 65 °C, and 28.8 A at 70 °C. If the panel ambient runs hot, the 32 A nameplate is only valid up to 50 °C — above that, the continuous load must be trimmed per the table. Operating ambient range is -25 °C to 70 °C; storage range is -40 °C to 80 °C.
Panel fit and mechanical data
Dimensions are 130 mm height, 76.2 mm width, 70 mm depth. The 76.2 mm width is a standard 3-pole MCCB footprint for this SENTRON frame — it fits the same DIN-rail or screw-mount pattern as other 3VA breakers in the same frame class. Front protection is IP40, meaning tools and fingers are kept out, but the enclosure around it must handle splash or dust. Mechanical endurance is rated at 15,000 operations latching.