What this 800 A MCCB delivers
The Siemens 3VA2580-5HL32-0KH0 is a SENTRON molded case circuit breaker rated for 800 A continuous current at 40 °C through 60 °C, with a slight derating to 767 A at 65 °C and 703 A at 70 °C. It carries 187 kA interrupting capacity at 240 V, 121 kA at 415 V, and 53 kA at 690 V — numbers that tell you this breaker can handle high-fault scenarios typical in industrial main feeders or large motor control centers without cascading upstream. The ETU320 electronic trip unit gives you adjustable long-time pickup (Ir) from 320 A to 800 A and instantaneous pickup (Ii) from 1200 A to 8000 A, so you can fine-tune coordination with downstream devices.
Dimensions are 210 mm wide, 320 mm high, 120 mm deep — a 3-pole frame that fits standard SENTRON mounting plates and busbar systems. The 120 mm depth leaves room behind the gland plate for cable lugs and phase barriers.