What the ratings mean for your panel
The Siemens 3VA2116-7HL36-0AA0 is a SENTRON 3VA2 molded case circuit breaker (MCCB) rated for 160 A continuous current — that is the thermal rating at any ambient from 40 °C through 70 °C, so no derating curve to manage in a warm enclosure. The ETU320 electronic trip unit gives you adjustable overload and short-circuit protection with a flat response across temperature, unlike a thermal-magnetic that drifts in a hot panel. The interrupting capacity is the headline: 330 kA at 240 VAC, 242 kA at 415/440 V, 187 kA at 500 V, and 3.7 kA at 690 V — that SCCR headroom means it can sit upstream of a high-fault transformer or a large motor drive without needing a current-limiting fuse ahead of it. The 25.5 W maximum power loss is modest for a 160 A frame; it won't drive up the internal panel temperature noticeably. This is a line-protection design (not motor-protection), so it's intended for feeder circuits, distribution panels, and main incomers where you need selective coordination downstream. The 3-pole, 800 V insulation voltage frame handles 3-phase systems up to 690 V phase-to-phase. IP40 on the front means it's protected against tools and wires >1 mm entering the face — standard for a panel-mounted breaker; the rest of the body is open to the enclosure air for cooling.
Mounting and integration
The 3VA2116-7HL36-0AA0 measures 105 mm wide, 181 mm high, and 86 mm deep — a standard 3-pole MCCB footprint for a 160 A frame. It mounts via four screws to a backplate or onto a mounting plate; no DIN-rail clip on this frame size. The ETU320 is powered from the line-side current, so no auxiliary control voltage needed for the trip unit. No undervoltage release, no shunt trip, no communication module on this variant — it is a standalone thermal-magnetic replacement with electronic precision. Verify the lug kit (not included) for your cable range.