What it is and what it does
The Siemens 3VM1116-3ED32-0AA0 is a SENTRON molded case circuit breaker (MCCB) designed for line protection in distribution panels. It's a 3-pole unit with a TM210 thermal-magnetic overcurrent release — that's a fixed thermal trip and a magnetic trip adjustable from 5x to 10x In. At 40 °C it carries 160 A continuous, and the thermal derating curve is shallow: still 160 A at 50 °C, dropping to 150 A at 70 °C. That means in a warm enclosure you lose only about 6% of capacity, so you don't need to oversize the frame for most panel environments. Breaking capacity is the headline: 76 kA at 240 V AC, 53 kA at 415 V, 32 kA at 440 V, and 12 kA at 500 V. That 76 kA at 240 V is strong — it handles high-fault utility feeds without needing a current-limiting fuse upstream. The 53 kA at 415 V covers most European industrial distribution. Insulation voltage is rated 800 V, so the breaker is physically gapped for 690 V systems.
Mounting and panel fit
Width is 76.2 mm (3 inches), depth 70 mm, height 130 mm. That's a standard 3-pole MCCB footprint — it'll bolt onto a mounting plate or into a panel-mount cradle. The IP40 front face keeps fingers out but isn't rated for washdown. Max power dissipation is 38 W at rated load, so factor that into your enclosure thermal budget if you're packing several breakers in a row.