160 A fixed rating, 4-pole, TM210 — line protection for distribution panels
The Siemens SENTRON 3VA1116-4GD46-0AA0 is a 4-pole molded case circuit breaker rated at a fixed 160 A, designed for line protection in distribution panels. The TM210 thermal-magnetic release handles overload and short-circuit protection without an electronic trip unit — no auxiliary power needed, no communication function onboard. Breaking capacity runs from 121 kA at 240 V down to 11.9 kA at 690 V, so the 415 V rating of 75.6 kA is the one to check against your available fault current. The 70 mm depth and 101.6 mm width fit standard MCCB panel cutouts; the IP40 front protection means it's suited for enclosed panel mounting, not washdown environments.
Thermal derating and power loss — panel thermal budget matters
The breaker holds its full 160 A rating up to 50 °C ambient. Above that it derates linearly: 158 A at 55 °C, 155 A at 60 °C, 153 A at 65 °C, and 150 A at 70 °C. Maximum power loss is 38 W — that's the heat you need to vent from the enclosure. Operating range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. The insulation voltage is rated at 800 V.