Eaton ER4-400J3PB Enclosed Rotary Disconnect - NEMA 4
Part Number: ER4-400J3PB
Quick Summary
The Eaton ER4-400J3PB enclosed rotary disconnect switch is designed to safely isolate power circuits in industrial applications. For facilities aiming to streamline maintenance and reduce startup delays, a compact, reliable isolator matters. CE marked and built for NEMA 4 enclosures, it withstands harsh environments; its rugged construction supports 600 V and 400 A service. As part of the Bussmann series, it integrates with standard electrical protection components, delivering safer operation and lower lifecycle costs.
Product Information
Extended Description
ER4-400J3PB Eaton: Eaton Bussmann series enclosed rotary disconnect switch, Fuse type J, Pistol handle, 600V, 400A, Black, NEMA rating 4
Product Name
Eaton Bussmann series enclosed rotary disconnect switch
Catalog Number
ER4-400J3PB
UPC
051712416047
Product Length/Depth
47.5 in
Product Height
15 in
Product Width
36.625 in
Product Weight
0.001 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
400A
NEMA rating
NEMA 4
Voltage rating
600 V
Special features
Fuse type J, Pistol handle
ER4-400J3PB~ENC DISC400J NEMA4 BLK
ER4-400J3PB~ENC DISC400J NEMA4 BLK
Eaton Specification Sheet - ER4-400J3PB
Feature: Enclosed rotary disconnect switch design provides robust, weather-protected isolation. Business impact: Improves safety during maintenance and reduces exposure to arc-flash risk in harsh environments. Application: Suitable for distribution panels and machine isolation in manufacturing and processing facilities. Feature: Fuse type J and pistol handle enable one-handed operation and quick interlock engagement. Business impact: Faster safe operation and reduced downtime during routine switching and testing. Application: Field service and panel installation where reliable, ergonomic control is essential. Feature: Electrical ratings of 600 V and 400 A with NEMA 4 protection deliver dependable performance under heavy loads. Business impact: Enables support for demanding equipment while maintaining conformity with industrial standards. Application: Heavy machinery, conveyors, and power distribution networks in industrial plants. Feature: CE marking and Bussmann series compatibility simplify compliance and integration. Business impact: Streamlines procurement, reduces validation time, and ensures interoperability with existing Bussmann protection components. Application: New installs and retrofit projects requiring standardized protection schemes. Feature: Large footprint dimensions (47.5 in length, 36.625 in width, 15 in height) provide a clear enclosure footprint for proper clearance and service access. Business impact: Predictable installation planning, easier maintenance access, and safer commissioning on the shop floor. Application: Panel upgrades and facility-wide electrical protection upgrades in manufacturing environments.
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FAQs
When upgrading or installing ER4-400J3PB, verify enclosure compatibility with a NEMA 4 rating and the 47.5 in depth, 36.625 in width, and 15 in height footprint. Ensure adequate clearance for operation of the pistol handle and fuse access. Mounting should align with catalog instructions and allow service access for fuse replacement without removing the unit from the enclosure.
ER4-400J3PB is rated for 600 V and 400 A, with a NEMA 4 enclosure rating. It uses Fuse type J and features a pistol handle for safe, ergonomic operation. The CE marking confirms compliance with European safety standards, while compatibility with Bussmann series protection components supports integrated electrical protection schemes.
Yes. The 400 A rating handles substantial load isolation, and the NEMA 4 enclosure is designed for challenging environments. The pistol handle and fuse-type J design provide reliable control during maintenance and startup operations, making it suitable for safety-critical isolation on manufacturing lines and packaging equipment.
The unit is CE marked, aligning with European safety requirements. It also carries a NEMA 4 enclosure rating, indicating suitability for wet or dusty industrial environments. These certifications support compliance in global facilities and ease integration with other Bussmann series protection components.
The rugged enclosed design minimizes exposure to dust and moisture, reducing unwanted wear. The pistol handle enables quick, safe disconnections, lowering maintenance time. Its compatibility with Bussmann series protections simplifies stocking and replacements, contributing to lower lifecycle costs and improved uptime across production lines.