What this MCCB delivers for your panel
The Siemens 3VA2116-5HL32-0DH0 is a 3-pole SENTRON molded case circuit breaker rated for 160 A continuous current at 40 °C, built around the ETU320 electronic trip unit for line protection duty. Its 187 kA breaking capacity at 240 V gives you serious fault-current headroom for high-capacity distribution panels or transformer secondaries where SCCR coordination is tight. The 121 kA at 415 V and 440 V, and 79 kA at 500 V, keep it viable across common industrial voltages without stepping up to a larger frame. This breaker ships with an integrated undervoltage release (UVR) and a 2+1 auxiliary contact block (2 auxiliary switches + 1 trip alarm switch HQ), so you get both remote status feedback and undervoltage protection without separate add-on modules. The ETU320 release provides electronic overload and short-circuit protection with adjustable settings, making it suitable for feeder circuits where precise coordination with downstream breakers is needed.
Thermal derating and real-world current
The 160 A rating holds flat from 40 °C through 50 °C — no derating needed in a typical 50 °C panel interior. At 55 °C it drops to 154 A, at 60 °C to 148 A, and at 70 °C to 136 A. If your enclosure runs hot near the upper operating limit of 70 °C, plan for that 15 % reduction from the nameplate. The maximum power loss of 28 W should be factored into your thermal budget, especially in a sealed or high-density panel.
Panel fit and integration
Dimensions are 105 mm wide, 181 mm high, and 86 mm deep — a standard 3-pole MCCB footprint that drops into most SENTRON mounting plates or DIN-rail adapters without panel rework. The undervoltage release coil and auxiliary contact wiring share the same terminal zone; verify free-wheel diode polarity on the UVR coil if your control circuit uses DC switching. The ETU320 is powered by internal current sensing — no external control power needed for the trip unit itself.