Four poles, with an ETU850 electronic trip unit designed for line protection. Insulation voltage rated at 800 V. The interrupting ratings climb to 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 9 kA at 690 V, so it handles high-fault utility feeds and transformer secondaries without cascading upstream. Physical footprint: 248 mm tall, 184 mm wide, 110 mm deep. Mounts in standard panel or enclosure backpan layouts; the 4-pole width is the dimension to check against existing busbar or cable ladder spacing.
The 400 A continuous rating is flat across the ambient range — that is unusual and means no thermal derating curve to manage in warm enclosures. The interrupting range (600 A minimum to 6 000 A maximum) covers most distribution panelboard and motor control center applications. The 187 kA at 240 V is a very high SCCR; this breaker can sit on the secondary of a large 480 V–208Y/120 V transformer without needing a current-limiting fuse upstream. The communication function allows remote trip indication and current monitoring via a compatible bus system, useful for energy management or predictive maintenance setups.