What this MCCB carries
The Siemens SENTRON 3VA2216-6HK42-0KC0 is a 4-pole molded case circuit breaker rated for 160 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. That 160 A holds steady at every temperature step in between, so you don't have to oversize for a warm panel. Its interrupting ratings climb to 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 42 kA at 690 V. Those numbers tell you this breaker can clear a bolted fault on a high-capacity transformer secondary without the arc flashing upstream — selectivity headroom for a main or feeder position. The ETU340 electronic trip unit handles the protection curve. Neutral protection is adjustable OFF, 50%, or 100% of the phase current. Latching endurance is rated at 20,000 operations.
Panel fit and integration
The case measures 140 mm wide, 181 mm high, and 86 mm deep. That 86 mm depth is the dimension that matters when you're laying out a shallow backpanel or a gland-plate clearance — it's the projection behind the door. The 140 mm width for a 4-pole frame tells you the pole spacing; verify your busbar or lug kit matches the SENTRON 3VA footprint before you drill. Front face protection is IP40 — suitable for a dry indoor panel, not for washdown areas. An optional motor drive can be added for remote switching, and the unit accepts communication modules if you need to tie it into a higher-level monitoring system.