Eaton ER4P-400N3PR Enclosed Rotary Disconnect - NEMA 4P
Part Number: ER4P-400N3PR
Quick Summary
Eaton ER4P-400N3PR is an enclosed rotary disconnect switch designed for safe circuit isolation in industrial control panels. Engineers often struggle with space, accessibility, and regulatory compliance when selecting non-fused disconnects for harsh environments. This unit is CE marked and NEMA 4P rated, capable of 600 V and 400 A, delivering reliable isolation in demanding environments. Its compact pistol-handle design simplifies installation and service, while the non-fused construction reduces spare parts and downtime. For OEMs and panel builders, this model supports faster deployment, standardized safety, and predictable maintenance costs across facilities.
Product Information
Extended Description
ER4P-400N3PR Eaton: Eaton Bussmann series enclosed rotary disconnect switch, Non-fused, Pistol handle, 600V, 400A, Red, NEMA rating 4P
Product Name
Eaton Bussmann series enclosed rotary disconnect switch
Catalog Number
ER4P-400N3PR
UPC
051712420372
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
Non-fused, Pistol handle
ER4P-400N3PR~ENC DISC400NF NEMA4XP RED
ER4P-400N3PR~ENC DISC400NF NEMA4XP RED
Eaton Specification Sheet - ER4P-400N3PR
Feature: Enclosed rotary disconnect switch design provides weather and ingress protection. Business Impact: Protects critical electrical connections from dust, moisture, and contamination, reducing failure rates and extending panel life. Application: Suitable for harsh factory floors and washdown areas where robust isolation is required. Feature: Non-fused configuration with a pistol handle enables safer, faster operation. Business Impact: Minimizes arc exposure risks during switching, lowers maintenance time, and simplifies operator training. Application: Routine equipment shutdowns in manufacturing lines and processing equipment. Feature: 600 V / 400 A electrical ratings deliver high-capacity circuit isolation. Business Impact: Supports heavy load applications, enabling scalable motor control and line feeds while maintaining reliable protection. Application: Large motors, conveyors, and process systems in industrial plants. Feature: NEMA 4P enclosure provides rugged protection in indoor/outdoor settings. Business Impact: Ensures reliable performance in dusty, wet, or humid environments, reducing unplanned downtime. Application: Food & beverage, chemical, and general manufacturing environments. Feature: CE marking and documented specifications aid regulatory compliance and ease of procurement. Business Impact: Streamlines cross-border deployments, supplier qualification, and standardization across facilities. Application: Global OEM projects and multi-site installations.
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FAQs
Installation involves confirming panel suitability for a 12 inch depth, ensuring proper clearance around the device, and mounting using the standard enclosure provisions. Verify 600 V and 400 A ratings align with the circuit, secure the pistol handle linkage for safe operation, and connect to the appropriate line and load conductors with correct torque per manufacturer guidelines. This process minimizes risk and ensures reliable isolation.
The ER4P-400N3PR provides a 600 V voltage rating and 400 A amperage rating within a non-fused, enclosed rotary switch framework. It carries a NEMA 4P enclosure, offering protection against dust and water ingress in challenging environments. The CE marking supports compliance across European markets, while the non-fused design reduces wear parts and maintenance complexity.
Yes. The device is designed with a NEMA 4P enclosure, which provides robust protection against dust and washdown conditions commonly found in manufacturing and processing facilities. While it is suitable for harsh environments, verify installation guidance for outdoor exposure and ensure appropriate mounting and sealing per site conditions.
The switch fits within standard control panel openings with an approximate footprint of 12 inches in length and 12.25 inches in height, with a width near 7.5 inches. Installation benefits include a compact profile that simplifies panel layout, straightforward mounting in typical switchgear cutouts, and compatibility with common wiring practices while maintaining safe isolation distances.
The non-fused design reduces routine maintenance needs and spare-part inventories, contributing to lower lifecycle costs. Its pistol-handled operation accelerates manual switching and reduces downtime during service or testing. Overall, users gain faster deployment, improved safety during isolation, and predictable maintenance budgeting across multiple facilities.