The Siemens 3VA1180-4EF32-0AB0 is a SENTRON molded case circuit breaker (MCCB) in the 3VA family, rated for 80 A continuous current (Iu) across a 3-pole configuration. It carries a TM240 thermal-magnetic overcurrent release — the fixed thermal element and magnetic trip are calibrated for line protection, not adjustable for motor or generator duty. This is the part you spec when the BOM calls for a straight feeder or distribution breaker and you want the interrupting capacity headroom without paying for a switchable electronic trip unit.
Breaking capacity across the voltage range
At 240 V the breaker interrupts 121 kA; at 415 V it holds 75.6 kA; at 440 V it drops to 52.5 kA; at 690 V it still clears 11.9 kA. That curve tells you the 3VA1180-4EF32-0AB0 is built for high-fault 480Y/277 V panels where the available short-circuit current sits well above 50 kA. The 690 V figure is useful for 600 V class Canadian or mining installations, though the 11.9 kA ceiling means you verify the fault current at that voltage before committing the BOM line.
Thermal derating and panel fit
The breaker holds its full 80 A rating from 40 °C through 50 °C ambient. At 55 °C it derates to 76.8 A, at 60 °C to 75.2 A, at 65 °C to 73.6 A, and at 70 °C to 72 A. If the panel ambient runs above 50 °C — say a tightly packed enclosure near a furnace line — you need to account for that 10 % drop at the top end. The 70 mm depth and 76.2 mm width fit the standard 3VA mounting footprint; the 130 mm height is the same as the rest of the 3VA frame. IP40 on the front means it's protected against tools and wires >1 mm, but not against water ingress — keep it inside the enclosure.
What it does not carry
No undervoltage release, no shunt trip, no ground-fault monitoring, no communication module, no phase-failure detection, and no voltage trigger. The TM240 release is a fixed thermal-magnetic unit — you cannot adjust the long-time or instantaneous pickup. If the application requires remote tripping, ground-fault protection, or adjustable trip curves, this is not the variant; you step up to the 3VA1 with an electronic ETU release.