Eaton ER4P-400J3PR Enclosed Rotary Disconnect - NEMA 4P
Part Number: ER4P-400J3PR
Quick Summary
ER4P-400J3PR is an enclosed rotary disconnect switch that safely isolates power in industrial controls. This solution addresses the perennial challenge of delivering reliable isolation while minimizing footprint and maintenance in harsh environments. It is CE marked and NEMA 4P rated, providing rugged protection for indoor and outdoor installations. Designed for industrial protection and control, it supports safer panel isolation and reduces total cost of ownership through dependable performance and straightforward integration.
Product Information
Extended Description
ER4P-400J3PR Eaton: Eaton Bussmann series enclosed rotary disconnect switch, Fuse type J, Pistol handle, 600V, 400A, Red, NEMA rating 4P
Product Name
Eaton Bussmann series enclosed rotary disconnect switch
Catalog Number
ER4P-400J3PR
UPC
051712416092
Product Length/Depth
12 in
Product Height
12.25 in
Product Width
7.5 in
Product Weight
11.24 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
400A
NEMA rating
NEMA 4P
Voltage rating
600 V
Special features
Fuse type J, Pistol handle
ER4P-400J3PR~ENC DISC400J NEMA4XPL RED
ER4P-400J3PR~ENC DISC400J NEMA4XPL RED
Eaton Specification Sheet - ER4P-400J3PR
Feature: Enclosed rotary disconnect with fuse type J and pistol handle for fast, secure operation. Business Impact: Improves operator safety and reduces switching time, translating to lower risk during maintenance and startup. Application: Control panels and switchgear assemblies that require reliable isolation with quick manual operation. Feature: 600 V and 400 A electrical ratings. Business Impact: Accommodates typical motor and feeder loads without oversizing, enabling compact, cost-effective designs. Application: MCCs, feeders, and process equipment that demand robust protection at standard industrial voltages. Feature: NEMA 4P enclosure rating. Business Impact: Provides weather resistance and dust ingress protection, decreasing unplanned downtime in damp or outdoor environments. Application: Outdoor substations, wash-down areas, and exposed panel locations. Feature: CE Marked and documented compliance. Business Impact: Streamlines regulatory approvals and reduces validation time for equipment racks and safety systems. Application: Global installations requiring recognized safety compliance. Feature: Dimensional footprint and weight specifications. Business Impact: Eases panel layout, mounting chases, and shipping logistics, saving space and handling costs. Application: New builds and retrofit projects with tight enclosure constraints.
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FAQs
Install the ER4P-400J3PR by mounting it securely in the panel chassis and aligning the handle for proper ON/OFF indication. Connect feed and load conductors to the switch terminals according to the catalog sheet, then verify the line-side protection and LOTO procedures.
The device is rated for 600 V maximum and 400 A continuous amperage, with a NEMA 4P enclosure. These ratings support motor control and feeder isolation in moderate to heavy industrial environments while maintaining safe operation and effective fault isolation.
Yes. The NEMA 4P enclosure rating provides protection against weather, dust, and splashing water, enabling reliable operation in outdoor or damp interiors. For extreme environments, ensure appropriate installation clearances and ventilation as outlined in the Eaton datasheet.
It carries CE marking, indicating compliance with essential EU safety standards, and features a NEMA 4P-rated enclosure for rugged protection. These certifications streamline regulatory approvals and provide confidence in performance within global industrial settings.
Routine inspection of the pistol handle, mechanical linkages, and enclosure seals is advised. Expect long-term reliability with periodic contact checks and cleanings. The rugged NEMA 4P housing helps minimize weather-related maintenance, contributing to lower lifecycle costs in mixed indoor/outdoor facilities.