The Siemens 3VA1116-4EF36-0JA0 is a SENTRON 3VA molded case circuit breaker rated for line protection in distribution panels. It carries 160 A continuous (Iu) across the 40 °C to 50 °C band, then derates to 144 A at 70 °C — so you can run it at full nameplate in a ventilated enclosure but need to account for the thermal curve above 50 °C if the panel runs hot. Breaking capacity hits 121 kA at 240 V and 75.6 kA at 415 V, which puts it in the high-interrupting range for 3-pole MCCBs — enough headroom for most industrial service-entrance or feeder applications where fault current is substantial. The TM240 overcurrent release is thermal-magnetic, fixed-trip, with a shunt trip (STL) auxiliary release option (order code 3VA9688-0BL32). No undervoltage release, no ground-fault monitoring, no communication module — this is a straightforward breaker for standard overcurrent protection, not a smart or selective device.
Mounting and panel fit
Panel builders: the 3VA1116-4EF36-0JA0 dimensions are 130 mm high, 76.2 mm wide, 70 mm deep. It mounts on a DIN rail or directly to a backplate via the 3VA mounting frame. The IP40 front protection means it's fine inside a closed cabinet but not rated for washdown or outdoor exposure without an enclosure. Three-pole format with no auxiliary contacts or trip indicator — if you need a visual flag or remote signaling, you'll add the auxiliary contact block separately. The shunt trip occupies the auxiliary release slot, so plan the wiring for the STL coil.