MCCB for line protection — 16 A, 4-pole, TM220 release
The Siemens SENTRON 3VA1196-5EE42-0AA0 is a 4-pole molded case circuit breaker (MCCB) designed for line protection. Its TM220 thermal-magnetic release provides overload and short-circuit protection, with a rated current of 16 A at 40 °C through 55 °C, derating to 15 A at 60 °C through 70 °C. Breaking capacity is the headline decision point here: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V. That 187 kA figure at 240 V means this MCCB can safely interrupt a fault current up to that level without upstream cascading — critical for high-fault installations like transformer secondaries or large motor control centers. The insulation voltage is rated at 800 V, and the front face carries IP40 protection — suitable for enclosed panel mounting where the breaker is behind a door or cover. The 70 mm depth, 101.6 mm width, and 130 mm height define its DIN-rail or mounting-plate footprint.