Line protection breaker with 187 kA interrupting capacity
The interrupting capacity hits 187 kA at 240 V, 121 kA at 415 V, and 75.6 kA at 440 V — that is high enough for most main-service or feeder positions in a distribution panel where fault current is substantial. The TM240 release is a thermal-magnetic design — thermal element handles overloads, magnetic element handles short-circuits. The separate auxiliary trip order code is 3VA9688-0BL30. Current rating holds at 80 A from 40 °C through 50 °C, then derates gradually to 72 A at 70 °C. That means in a warm panel — say 55 °C internal — you still get 76.8 A continuous, no need to oversize the frame. The 70 mm depth and 76.2 mm width fit the standard SENTRON 3VA panel footprint; the IP40 front protection keeps dust out of the mechanism in a clean indoor enclosure.
Because it is a current-production part, lead times are generally consistent with Siemens' distribution channel — not a surplus/broker scavenge. If you need compliance documentation, Siemens provides the standard CE, UL, and IEC declarations for the 3VA family; the part carries the DIN EN 81346-2 reference code Q for function designation in panel schematics.
At 130 mm height, 76.2 mm width, and 70 mm depth, it occupies the same cutout as other 3VA 3-pole frames — so swapping from a 3VA1110-5EE32-0JA0 or 3VA1112-5EF32-0CA0 is a mechanical drop-in, no panel rework. The shunt trip (STL) release is factory-installed; wire it to a remote pushbutton or safety relay for emergency off. The auxiliary contact block (2 aux + 1 alarm) is also integrated, so you get status feedback without an add-on module.