What this MCCB carries and where it fits
The Siemens SENTRON 3VA2116-7HN32-0AA0 is a 3-pole molded case circuit breaker rated for 160 A continuous current, using the ETU350 electronic trip unit for adjustable overload and short-circuit protection. It's designed for line protection — meaning it sits at the feeder or main distribution point in a panel, not as a motor-protective device. The 800 V rated insulation voltage gives headroom for 480 V and 600 V class systems without derating the insulation boundary.
Breaking capacity — what the numbers mean for fault duty
The interrupting ratings span the common industrial voltages: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V. That 330 kA at 240 V is a very high interrupting capacity — it handles large transformer-fed faults common in North American 240 V delta services. The drop to 3.7 kA at 690 V is typical for this frame size; if your system runs 690 V with high available fault current, you need to verify coordination upstream. The ETU350 trip unit lets you set the short-time pickup and delay for selective coordination with downstream breakers.
Thermal performance and panel integration
The 160 A rating holds flat from 40 °C through 70 °C ambient — no derating needed across that range, which simplifies panel layout in warm enclosures. Maximum power loss is 25.5 W, so factor that into your thermal budget if the MCCB shares a small enclosure with other heat sources. The front face carries IP40 protection; the rest of the breaker relies on the enclosure's IP rating. Dimensions are 105 mm wide, 181 mm high, 86 mm deep — standard 3-pole MCCB footprint for DIN-rail or panel-mount installation.