Eaton ER4-40N3PR Enclosed Rotary Disconnect - NEMA 4
Part Number: ER4-40N3PR
Quick Summary
ER4-40N3PR enclosed rotary disconnect switch provides safe isolation for electrical circuits in industrial control panels. Operators and maintenance teams face downtime and miswiring risks; a non-fused design with a pistol handle reduces fault paths and simplifies live-line work. The unit is CE marked and designed for tough environments with a NEMA 4 enclosure rating, supporting reliable operation in washdown, dust, and vibration. With 600 V and 40 A ratings, it enables compact, compliant isolation in machine controls, minimizing panel size while maintaining safety. This combination helps OEMs and integrators meet safety standards, improve uptime, and reduce maintenance costs.
Product Information
Extended Description
ER4-40N3PR Eaton: Eaton Bussmann series enclosed rotary disconnect switch, Non-fused, Pistol handle, 600V, 40A, Red, NEMA rating 4
Product Name
Eaton Bussmann series enclosed rotary disconnect switch
Catalog Number
ER4-40N3PR
UPC
051712487832
Product Length/Depth
0.1 in
Product Height
0.1 in
Product Width
0.1 in
Product Weight
0.1 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
40A
NEMA rating
NEMA 4
Voltage rating
600 V
Special features
Non-fused, Pistol handle
Bussmann series complete full line catalog no. 1007
Bussmann series complete full line catalog no. 1007
Eaton Specification Sheet - ER4-40N3PR
Feature → Business Impact → Application: Non-fused design reduces fault paths and simplifies maintenance workflows, improving equipment uptime and worker safety in busy production lines. Application: Ideal for industrial control panels where quick isolation is required without adding fuse-related fault points, especially in food processing, packaging, and assembly environments. Feature → Business Impact → Application: Pistol handle operation enables one-handed actuation, streamlining lockout/tagout procedures and reducing labor time during maintenance. Application: Suitable for retrofit projects in existing equipment where operator ergonomics and fast serviceability matter. Feature → Business Impact → Application: 600 V, 40 A electrical rating with a NEMA 4 enclosure provides robust protection against dust, water, and washdown conditions, boosting reliability in harsh environments. Application: Common in outdoor or humid factory floors, automotive assembly lines, and material handling systems. Feature → Business Impact → Application: CE marking and Bussmann series construction ensure regulatory compliance and compatibility with standard electrical protections, lowering risk for integrators. Application: Used by OEMs designing compliant, safe control architectures. Feature → Business Impact → Application: Compact footprint and standard cataloging enable easy drop-in replacements and straightforward installation in space-constrained panels. Application: Ideal for retrofits and new builds where panel real estate is at a premium. Feature → Business Impact → Application: Non-fused, NEMA 4 rated disconnects reduce long-term maintenance costs by eliminating fuse-related replacements and improving predictability in uptime metrics. Application: Critical in process industries where continuous operation is essential and downtime is expensive.
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FAQs
The ER4-40N3PR is designed for common control panel environments and uses standard wiring practices for enclosed rotary disconnects. Its compact footprint and non-fused design simplify retrofits and new installations, reducing panel rework and enabling straightforward integration with existing Bussmann series components.
This switch is rated for 600 V and 40 A, with a NEMA 4 enclosure providing protection against dust and water ingress. It is non-fused and features a pistol handle for easy operation, with CE marking to indicate compliance with relevant European safety standards.
Best suited for industrial machine control panels, process equipment isolation, and safety shutdown applications where reliable, fast isolation is required. Its rugged enclosure and compact form factor make it ideal for retrofits in harsh environments such as washdown areas and dusty production lines.
Plan for appropriate panel cutouts, wiring gauge compatible with 40 A rating, and proper lockout/tagout procedures to leverage the pistol handle. Verify CE compliance and ensure the enclosure is mounted in a location that protects the device from excessive moisture and debris per NEMA 4 guidance.
By eliminating fuse-related maintenance and enabling rapid, one-handed isolation, the ER4-40N3PR reduces maintenance downtime and replacement costs. The CE and NEMA 4 certified design also lowers risk of nonconformity and environmental damage, contributing to overall uptime and safety in production environments.