Integrator's spec recap
The Siemens 3VA1116-4EF32-0AD0 is a 3-pole SENTRON molded case circuit breaker (MCCB) rated for line protection, carrying a rated continuous current Iu of 160 A. It uses a TM240 thermal-magnetic overcurrent release — the thermal element handles overloads, the magnetic element handles short-circuits — and is designed without undervoltage release, voltage trigger, or communication functions. The interrupting ratings are 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V. That 75.6 kA at 415 V is the figure most often needed for European 400 V industrial panels; it tells you this breaker can clear a bolted fault at the main distribution board without upstream fuses needing to open.
Current derating and ambient temperature
The 160 A rating holds flat from 40 °C up to 50 °C ambient. Above that, the continuous current must be derated: 153.6 A at 55 °C, 150.4 A at 60 °C, 147.2 A at 65 °C, and 144 A at 70 °C. If this breaker lives in a non-air-conditioned enclosure near a furnace line or in a Middle East panel room, that 144 A at 70 °C is the number to use for load planning — not the 160 A nameplate.
Physical fit and panel integration
Dimensions are 130 mm height, 76.2 mm width, 70 mm depth. The width is a standard 3-pole MCCB footprint — 76.2 mm (3 inches) — so it drops into most panel-mounted MCCB bases without re-drilling. The IP40 front protection means the breaker face is protected against tools and wires >1 mm, but the enclosure itself must provide the overall panel IP rating. It ships with 3 auxiliary switches (HQ type) for status feedback to a PLC or remote I/O.