The Siemens 3VA2580-5JP32-0BH0 is a SENTRON molded case circuit breaker rated for 800 A continuous current at 40 °C, holding that rating all the way up to 60 °C before it starts to derate — at 65 °C it still carries 767 A, and at 70 °C it delivers 703 A. The interrupting ratings are 187 kA at 240 V, 121 kA at 415 V, and 53 kA at 690 V — numbers that put this squarely in the high-fault-current category for industrial distribution. The 3-pole design with the ETU550 electronic trip unit gives you adjustable long-time pickup (Ir) from 0.5 to 1.0 × In and short-time delay (tsd) from 0.05 to 0.5 s, so you can coordinate selectively with downstream breakers.
The breaker measures 210 mm wide, 320 mm tall, and 120 mm deep — a standard footprint for an 800 A frame.
Trip unit and protection capabilities
The ETU550 is a communicating electronic trip unit — it supports the communication function for integration into a monitoring system. It does not include ground-fault monitoring or N-conductor protection; those are separate variants.