Eaton ER4-400J3PR Enclosed Rotary Disconnect - NEMA 4
Part Number: ER4-400N3PB
Quick Summary
The Eaton ER4-400J3PR enclosed rotary disconnect switch isolates electrical circuits up to 600 V and 400 A. Maintenance teams often struggle with slow, unsafe isolation during service, which drives downtime and arc-flash risk. This model carries CE marking and a rugged NEMA 4 enclosure, delivering regulatory compliance and protection in washdown or harsh industrial spaces. From a procurement perspective, the design simplifies installation and service, reducing spare parts and labor while improving overall equipment reliability. Its fuse type J compatibility and pistol handle streamline operation and safety training for maintenance crews.
Product Information
Extended Description
ER4-400N3PB Eaton: Eaton Bussmann series enclosed rotary disconnect switch, Non-fused, Pistol handle, 600V, 400A, Black, NEMA rating 4
Product Name
Eaton Bussmann series enclosed rotary disconnect switch
Catalog Number
ER4-400N3PB
UPC
051712420143
Product Length/Depth
36 in
Product Height
12.375 in
Product Width
30 in
Product Weight
19 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
400A
NEMA rating
NEMA 4
Voltage rating
600 V
Special features
Non-fused, Pistol handle
ER4-400N3PB~ENC DISC400NF NEMA4 BLK
ER4-400N3PB~ENC DISC400NF NEMA4 BLK
Eaton Specification Sheet - ER4-400N3PB
Feature → Business Impact → Application: The ER4-400J3PR delivers a robust 600 V, 400 A isolation solution within a weather-resistant NEMA 4 enclosure, reducing exposure to arc flash and enabling compliant shutdowns in harsh environments. This translates to safer maintenance, less downtime, and longer equipment life in manufacturing lines and process facilities where reliable power isolation is critical. Feature → Business Impact → Application: Fuse type J and pistol handle design simplify operation and replacement, cutting training time and minimizing operator error during startup or servicing in control panels and switchgear assemblies. Feature → Business Impact → Application: CE marking ensures European regulatory alignment, while enclosure protection supports washdown-ready installations, making it suitable for food processing, chemical, and automotive environments. Feature → Business Impact → Application: 600 V/400 A rating provides scalable protection for medium-sized equipment, enabling modular expansion and lower total cost of ownership across a safety-conscious maintenance program.
Get a Quick Quote for a Eaton ER4-400N3PB
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton ER4-400N3PB?
Enquire Now
FAQs
The ER4-400J3PR is designed for electrical protection and control installations that require reliable isolation up to 600 V and 400 A. It fits into Bussmann series ecosystem and is suitable for switchgear, control panels, and machinery where a rugged, enclosed rotary disconnect is preferred for safety, maintenance, and compliance. Its NEMA 4 enclosure supports washdown environments commonly found in industrial plants.
Key specs include a 600 V voltage rating, 400 A amperage rating, NEMA 4 enclosure, fuse type J, and a pistol-style handle for safer operation. Additional compliance details include CE marking. The catalog number is ER4-400J3PR and the UPC is 051712416054, reflecting its integration with Eaton Bussmann series protection products.
Yes. The enclosure is rated NEMA 4, providing protection against dust, water ingress, and washdown conditions typical of industrial environments. This makes it well-suited for outdoor installations or facilities with demanding cleanliness and moisture control requirements, while maintaining safe and reliable power isolation.
Maintenance focuses on ensuring the pistol handle and mechanical linkage operate smoothly and the enclosure gasket remains intact for ongoing ingress protection. Use with fuse type J components as specified, and perform periodic inspections to verify proper isolation during service. The durable CE-marked design supports long service life in demanding industrial settings.
The ER4-400J3PR provides safe, rapid isolation that reduces downtime during maintenance and minimizes arc-flash exposure for personnel. Its rugged NEMA 4 enclosure supports reliable operation in harsh environments, improving equipment availability and compliance with safety standards while simplifying procurement through a single, standards-aligned component for protection and control.