The Siemens 3VA1080-3ED42-0JC0 is a 4-pole IEC frame 100 circuit breaker in breaking capacity class N, rated for 80 A fixed overload protection (Ir = 80 A) with a TM210 thermal-magnetic trip unit. Short-circuit protection is fixed at Ii = 10 × In, and the interrupting capacity reaches Icu = 25 kA at 415 V — enough for most industrial distribution panels where fault levels stay under that threshold. The shunt trip (STL) operates on 110–127 V DC or AC 50/60 Hz, and the breaker ships with two auxiliary switches (HQ) plus a nut keeper kit for secure terminal fastening. The neutral conductor is unprotected, so this variant is intended for 3-phase + N systems where the neutral is not switched or protected.
Mounts on DIN rail per the 3VA1 frame standard. The nut keeper kit prevents terminal hardware from dropping into live panels during installation — a detail that speeds up panel wiring on the line. The two HQ auxiliary switches provide independent status feedback for remote monitoring or PLC inputs.