The Siemens SENTRON 3VA2580-5HL32-0DA0 is a 3-pole molded case circuit breaker rated for 800 A continuous current (Iu) with an ETU320 electronic trip unit, configured for line protection duty. It carries 187 kA interrupting capacity at 240 V, 121 kA at 415 V, and 53 kA at 690 V — figures that govern its selectivity and fault-clearing headroom in a distribution panel. Dimensions are 210 mm wide, 320 mm high, 120 mm deep — a standard footprint for this current class on a DIN-rail or bolted panel mount.
Thermal derating and operating envelope
The breaker holds its full 800 A rating from 40 °C through 60 °C ambient without derating. At 65 °C it must be loaded to 767 A, and at 70 °C to 703 A. Operating ambient range is -25 °C to 70 °C; storage range is -40 °C to 80 °C.