What this MCCB carries and where it fits
The Siemens 3VA1116-6EE46-0AA0 is a 4-pole SENTRON molded case circuit breaker rated 160 A continuous at 40 °C, with a TM220 thermal-magnetic release designed for line protection in distribution panels. Its interrupting rating of 220 kA at 240 V AC means it can clear a bolted fault at that voltage without rupturing — critical for high-fault-capacity service entrances or industrial mains where available fault current exceeds typical 65 kA or 100 kA breakers. At 415 V the rating drops to 154 kA, at 440 V to 75.6 kA, and at 500 V or 690 V to 17 kA — the breaker's arc chamber is sized for the voltage step-down, so verify the point-of-use voltage against the curve before specifying. The TM220 release provides a fixed thermal pickup and magnetic short-circuit trip; no voltage trigger or ground-fault monitoring is built in, so external modules are needed for those functions.
Thermal derating and panel integration
The breaker holds 160 A up to 50 °C ambient, then derates to 158 A at 55 °C, 155 A at 60 °C, 153 A at 65 °C, and 150 A at 70 °C — a gentle slope that buys headroom in a warm enclosure, but above 50 °C the continuous current is no longer the nameplate 160 A. Maximum power loss is 38 W, which matters for heat buildup inside a sealed panel; ensure the enclosure's dissipation rating covers this plus adjacent devices. Front protection is IP40 — suitable for dry indoor panels; not rated for washdown or dust ingress on the front face. Dimensions are 70 mm deep, 101.6 mm wide, 130 mm tall — a standard 4-pole MCCB footprint that fits most Siemens SENTRON mounting bases and busbar systems without panel rework.