The SENTRON 3VA2580-6HN32-0AH0 is a 3-pole molded case circuit breaker rated for a continuous current of 800 A, with an ETU350 electronic trip unit for adjustable overload and short-circuit protection. The 242 kA breaking capacity at 240 V and 187 kA at 415 V mean it can interrupt very high fault currents without upstream cascading — critical for main feeders and high-capacity distribution in industrial switchboards.
Trip unit and adjustability
The ETU350 electronic trip unit gives you field-adjustable long-time pickup (Ir) from 0.5 to 1.0 x In — so you can set the 800 A breaker down to 400 A if the load doesn't need the full rating. Short-time pickup (Isd) is adjustable from 1.5 to 10 x Ir, with time delays from 0.04 s to 0.4 s for selective coordination downstream. Instantaneous pickup (Ii) goes up to 10 x In (8000 A). That range lets you tune selectivity with downstream breakers without nuisance tripping.
Temperature derating and power loss
Rated at 800 A continuous from 40 °C up to 60 °C ambient — no derating needed in a warm panel. At 65 °C it drops to 767 A, and at 70 °C to 703 A.