The Siemens SENTRON 3VA1132-3EF36-0AF0 is a 3-pole molded case circuit breaker (MCCB) rated for line-protection duty with a TM240 thermal-magnetic overcurrent release. It carries a continuous current of 32 A at 40 °C ambient, derating to 30 A at 70 °C — the full thermal curve is flat up to 50 °C, dropping one amp per 5 °C step above that. Interrupting capacity hits 75.6 kA at 240 V, 52.5 kA at 415 V, and holds 11.9 kA all the way up to 690 V, so it handles high-fault utility feeds and downstream coordination in a single frame size.
What the interrupting ratings mean for your panel
The 75.6 kA at 240 V is the maximum fault current this MCCB can safely interrupt without welding or rupturing — critical for service-entrance or main-breaker positions where available fault current is high. At 415 V (common 3-phase industrial supply), the 52.5 kA rating still covers most transformer-fed installations. The 11.9 kA floor at 690 V means it also works in 690 V mining or marine systems, though you'd typically use a higher-frame breaker for that voltage class; here it's a fallback for mixed-voltage panels.
Mounting and integration
Mounts on a standard DIN rail or panel-mount base (the 76.2 mm width fits a 3-pole MCCB footprint). IP40 on the front means it's protected against tools and wires >1 mm — fine for enclosed panels; no washdown rating. The built-in auxiliary switch (1 NO/NC) plus a separate trip-alarm switch (HQ type) gives you remote status feedback without an add-on module. Rated insulation voltage is 800 V, so it's safe for 690 V systems with proper clearance.