What it is and what it does
The Siemens 3VA1116-3EF32-0JA0 is a SENTRON molded case circuit breaker (MCCB) designed for line protection in distribution panels. It carries a 160 A continuous rating at 40 °C ambient, with a 3-pole configuration and a TM240 thermal-magnetic overcurrent release that provides both overload and short-circuit protection in a single unit. Breaking capacity is 75.6 kA at 240 V AC, 52.5 kA at 415 V, and 32 kA at 440 V — figures that determine whether this breaker clears a fault without upstream damage in your specific system voltage. At 500 V and 690 V the rating drops to 11.9 kA, so verify your available fault current at the point of installation. The breaker includes a shunt trip (STL) auxiliary release for remote tripping, and the insulation voltage is rated 800 V. Power loss at full load is 38 W maximum, which matters for enclosure thermal calculations in a crowded panel.
Panel fit and integration
Dimensions are 130 mm height, 76.2 mm width, 70 mm depth — a standard footprint that fits most DIN-rail or panel-mount MCCB enclosures. The 3-pole design with shunt trip means you need to account for the auxiliary wiring when laying out the panel; the undervoltage release is not fitted on this variant.