The Siemens 3VA1116-4GF42-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for line protection, with a continuous current of 160 A and a 4-pole configuration. It uses a TM240 thermal-magnetic overcurrent release — the thermal element handles overloads, the magnetic element clears short-circuits. No undervoltage release, no trip indicator, no communication function; this is a plain-vanilla distribution breaker sized for a main or feeder in a 400 V panel.
Breaking capacity and derating
Breaking capacity is voltage-dependent: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. At 400 V typical of European distribution, interpolate between the 415 V and 440 V figures — expect well above 50 kA. That gives headroom for most industrial service-entrance or sub-distribution boards. The breaker does not derate on current up to 50 °C (160 A flat); above that it steps down: 158 A at 55 °C, 155 A at 60 °C, 153 A at 65 °C, 150 A at 70 °C. If the panel ambient runs hot, factor the 70 °C figure into the load calculation.
Panel fit and environment
Mounts on a DIN rail or direct panel — the 101.6 mm width (4 in) is a standard 4-pole MCCB footprint. Depth is 70 mm (2.76 in), height 130 mm (5.12 in). Front face carries IP40 protection — fine for a dry indoor enclosure; not rated for washdown. Storage range -40 to 80 °C; operating -25 to 70 °C. Maximum power loss is 38 W — negligible for ventilation planning in a typical cabinet, but worth noting if the panel is densely packed.