What this 160 A MCCB does on the line
The Siemens 3VM1116-3ED12-0AA0 is a 1-pole SENTRON molded case circuit breaker rated 160 A continuous at 40 °C, with the TM210 thermal-magnetic release — fixed thermal trip, magnetic adjustment up to 1600 A.
Current derating and thermal reality
Full 160 A holds through 50 °C ambient. At 55 °C it derates to 158 A, at 60 °C to 155 A, at 65 °C to 153 A, and at 70 °C to 150 A. That's a shallow curve — only 10 A lost over a 30 °C rise — so it's stable in a warm panel as long as you don't crowd the enclosure. Maximum power loss is 13 W; plan ventilation if you're stacking multiple breakers in a small gland plate.
What the TM210 release means for coordination
The TM210 is a fixed thermal, adjustable magnetic release. Thermal pickup is fixed at the 160 A frame rating; magnetic short-circuit pickup is adjustable from 800 A to 1600 A (5x to 10x In). That adjustability lets you set selective coordination with downstream MCBs or fuses — crank it to 1600 A for motor-start inrush, drop it to 800 A for tighter cable protection.
Width is 25.4 mm (1 inch), depth 70 mm, height 130 mm. No motor drive option, so remote reset requires an external actuator.