The Siemens 3VA1080-4ED42-0BF0 is a 4-pole IEC frame 100 circuit breaker from the 3VA1 series, rated at 80 A with fixed thermal-magnetic TM210 overload protection (Ir = 80 A) and fixed short-circuit protection set at Ii = 10 × In. The breaking capacity class S delivers an Icu of 36 kA at 415 V, which means it can safely interrupt fault currents up to that level on a 415 V three-phase system without upstream cascading — a solid fit for main or sub-feed protection in a 400 V industrial panel.
This breaker includes an integrated undervoltage release (24 V DC) as an accessory, plus a nut keeper kit for secure mounting. The N conductor is unprotected — confirm your system's neutral protection scheme before wiring. The 3VA1 frame snaps onto DIN rail, so panel integration is straightforward for a standard 4-pole footprint.