What this MCCB delivers — and where the ratings matter
The Siemens SENTRON 3VM1116-3ED42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated 160 A continuous at 40 °C, with a TM210 thermal-magnetic overcurrent release. The interrupting capacity hits 76 kA at 240 V AC and 53 kA at 415 V AC — figures that govern fault-clearing capability in a distribution panel. The 800 V rated insulation voltage and IP40 front protection suit it for installation in a standard switchboard enclosure where the front face is behind a door or cover.
Thermal derating and the real-world current limit
The 160 A rating holds flat from 40 °C through 50 °C. Above that it begins to step down: 158 A at 55 °C, 155 A at 60 °C, 153 A at 65 °C, and 150 A at 70 °C (–). If the panel ambient runs hot — say a crowded enclosure near a transformer — the 150 A floor at 70 °C is the number to size against, not the catalog 160 A. The maximum power loss of 38 W is the heat the breaker dumps into the enclosure; factor it into the thermal budget.
Physical fit and panel integration
The breaker measures 101.6 mm wide, 130 mm tall, and 70 mm deep. The 4-pole footprint matches a standard MCCB cutout for a 160 A frame. No undervoltage release, no shunt trip, no communication module — this is a straight line-protection device. The TM210 release is a fixed thermal-magnetic type; no interchangeable trip units.