What it is and what it does
The Siemens 3VM1196-3ED42-0AA0 is a 4-pole molded case circuit breaker from the 3VM1 series, built on the IEC frame 160 platform. It provides line protection with a TM210 thermal-magnetic trip unit, fixed at 16 A overload (Ir = 16 A) and a short-circuit pickup of 20 × In (320 A). The breaking capacity class N delivers Icu = 25 kA at 415 V AC, which means it can safely interrupt fault currents up to that level on a 415 V supply without upstream damage — a key selectivity consideration for panel builders coordinating downstream feeders.