Eaton ER4X-200J3PR Enclosed Rotary Disconnect - NEMA 4X

Enclosed rotary disconnect design provides a sealed isolation point that minimizes arc exposure and protects nearby control circuits. This translates to measurable safety gains for maintenance crews and improved uptime in busy panels. The ER4X-200J3PR is suitable for control cabinets, motor feeders, and outdoor switchgear where reliable isolation is non-negotiable. Fuse type J compatibility ensures proper fuse protection coordination with Bussmann fuses, delivering fast fault clearance and reducing nuisance tripping. The business impact is improved selectivity, easier fault tracing, and minimized downtime during preventive maintenance. This configuration is well-suited for MCCs and protected control circuits where clean disconnection is critical. Pistol-style handle offers intuitive operation and safer manual disconnection, reducing operator fatigue and the chance of misoperation during switching tasks. As a result, maintenance windows are shorter and lockout/tagout procedures become more straightforward in high-change environments. Typical applications include routine line testing and emergency isolation in manufacturing lines. 600 V, 200 A rating with a NEMA 4X enclosure provides rugged performance in dusty, damp, or washdown environments while complying with CE marking. This combination enables installation in harsh facilities, including outdoor equipment bays, without sacrificing safety or reliability. The unit's enclosure style also supports secure mounting inside standard electrical cabinets. Documentation and catalog support from Eaton, including the Bussmann series catalog no. 1007 and the ER4X-200J3PR specification sheet, simplifies design-in and procurement. Engineers benefit from consistent part numbers, cross-reference data, and single-source maintenance planning. This reduces total cost of ownership by enabling standardized protection across electrical distributions.