The Siemens 3VA1112-5ED32-0AA0-ZD00 is a 3-pole IEC molded-case circuit breaker in the 3VA1 family, frame size 160, with a breaking capacity class M rating of Icu=55kA at 415V AC. The TM210 thermal-magnetic trip unit provides fixed overload protection at Ir=125A and fixed short-circuit protection at Ii=10 x In (1250A), so the breaker is sized for a 125A continuous load with magnetic pickup at 1250A. The FTFM designation indicates a front-mount rotary handle with through-the-door operation, common in panel layouts where the breaker is mounted inside an enclosure and the handle protrudes through the door.
Deployment context
The FTFM rotary handle allows the breaker to be operated from outside the enclosure while the body remains inside — a standard arrangement for MCCs and distribution panels where arc-flash safety and door-closed operation are required. The 3-pole configuration suits three-phase line protection for feeders, motor branch circuits, or transformer primaries.