Circuit breaker 3VM1 IEC frame 160, 25 kA @ 415 V, 20 A
The Siemens 3VM1120-3ED32-0AA0 is a 3-pole molded-case circuit breaker in the 3VM1 IEC frame 160 series, rated for line protection with a TM210 thermal-magnetic trip unit. Breaking capacity class N delivers Icu=25 kA at 415 V AC, which means it can safely interrupt fault currents up to that level without upstream cascading — a key selectivity figure for panel coordination studies. The overload protection is fixed at Ir=20 A (non-adjustable), and short-circuit protection is set at Ii=16 x In (320 A). This breaker ships with a nut keeper kit for secure panel mounting.