The EZB400W08 is an 8-way EasyPact busbar rated 400 A continuous, with a short-time withstand of 40 kA for 1 second — that's the fault current the busbar can survive without damage during a short-circuit event, sized for panelboards built to IEC 60439. The 690 V insulation voltage and 550 V operational voltage (AC 50/60 Hz) define the maximum system voltage it can handle; the 400 A rating governs the total load it can feed across its 8 ways.
This part is obsolete per the manufacturer's lifecycle record. No direct successor is listed in the evidence.
Deployment context
Mounts inside an EasyPact panelboard or distribution enclosure — the busbar ties the outgoing breakers or switch-disconnectors to the incoming supply. The 8-way layout supports up to 12 two-pole, 24 single-pole, or 8 three-pole devices, so it fits a mixed-load panel feeding motor starters, lighting contactors, or general distribution circuits.
Built to IEC 60439, the standard for low-voltage switchgear and controlgear assemblies. The 40 kA short-time withstand rating means it coordinates with upstream protective devices rated for that fault level — critical for selectivity studies in a panel schedule.