The 3VM1110-5EE46-0AA2 is a Siemens 3VM1 IEC frame 160 molded case circuit breaker with a 55 kA breaking capacity at 415 V (class M). The 4-pole configuration with unprotected neutral suits three-phase plus neutral systems where the neutral does not require overcurrent protection. The TM220 thermal-magnetic trip unit provides adjustable overload protection (Ir = 70 A to 100 A) and fixed short-circuit protection at 10× In (1000 A). That 10× Ii setting is typical for motor branch circuits where inrush needs to ride through without nuisance tripping; for a 100 A frame, 1000 A instantaneous pickup clears hard faults fast while ignoring normal starting currents.
Mounts on DIN rail or direct panel via the frame mounting points. The 4-pole body occupies roughly 140 mm of DIN rail width — plan the gland plate and wireway fill accordingly. Terminal connections accept copper or aluminum conductors up to the frame rating; torque values per the nameplate.