Eaton ER3R-400J3PB Enclosed Rotary Disconnect - NEMA 3R
Part Number: ER3R-400J3PB
Quick Summary
Eaton ER3R-400J3PB enclosed rotary disconnect isolates power in industrial panels. Installation downtime and misconfiguration are costly; this unit provides a rugged, code-compliant isolation point. CE Marking and NEMA 3R enclosure support safe outdoor and indoor use, while 600 V/400 A ratings cover heavy-duty switching. In practice, you gain reliability for motor control centers, switchgear, and critical power isolation with minimal training. Its compact footprint and pistol handle design simplify quick, safe operation for technicians and maintenance staff. With an emphasis on durability and field serviceability, the ER3R-400J3PB supports long service life in demanding environments. Trustworthy performance reduces total cost of ownership.
Product Information
Extended Description
ER3R-400J3PB Eaton: Eaton Bussmann series enclosed rotary disconnect switch, Fuse type J, Pistol handle, 600V, 400A, Black, NEMA rating 3R
Product Name
Eaton Bussmann series enclosed rotary disconnect switch
Catalog Number
ER3R-400J3PB
UPC
051712416023
Product Length/Depth
0.001 in
Product Height
0.001 in
Product Width
0.001 in
Product Weight
19 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
400A
NEMA rating
NEMA 3R
Voltage rating
600 V
Special features
Fuse type J, Pistol handle
ER3R-400J3PB~ENC DISC400J NEMA3R BLK
ER3R-400J3PB~ENC DISC400J NEMA3R BLK
Eaton Specification Sheet - ER3R-400J3PB
Feature: Enclosed NEMA 3R design protects the switch's operating mechanism from dust, rain, and incidental contact. Business impact: This protection reduces unscheduled downtime and extends service intervals, delivering lower maintenance costs in harsh facilities. Application: Ideal for outdoor switchgear, motor control centers, and process-line disconnects where reliability and environmental resilience are critical. Feature: Fuse type J integration with a 600 V, 400 A rating enables selective protection and safe isolation. Business impact: Improved fault containment minimizes downstream damage, reduces spare parts consumption, and supports safer commission testing. Application: Suitable for feeder circuits and protection schemes in industrial power distribution networks. Feature: Pistol-style handle provides ergonomic operation plus straightforward locking for lockout-tagout. Business impact: Enhances operator safety, shortens isolation times, and reduces training overhead for maintenance teams. Application: Widely used by technicians performing routine equipment isolation in manufacturing lines and plant services. Feature: CE marking and Bussmann-series compatibility streamline procurement and compliance. Business impact: Consolidates sourcing, reduces stock variety, and simplifies regulatory documentation for audits. Application: Fits standard control cabinets and retrofit projects across facilities with CE-based requirements. Feature: Durable construction and a practical weight around 19 lb support easy installation and service. Business impact: Speeds up installation, minimizes downtime during upgrades, and improves project ROI. Application: Suitable for mid- to large-scale electrical protection schemes in industrial environments.
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FAQs
Yes. The ER3R-400J3PB is rated for 600 V and up to 400 A, making it suitable for high-current isolation in 3-phase distribution and motor control centers. Its NEMA 3R enclosure supports reliable operation in indoor and outdoor environments, while fuse type J provides coordinated protection for feeder circuits and switchgear assemblies.
Plan for proper panel mounting to standard enclosures, ensuring adequate clearances for the handle and wiring. Use the pistol-style handle for safe operation and enforce lockout-tagout procedures. Verify CE compliance in your local regulatory context and confirm compatibility with Bussmann series components for streamlined spare parts management.
Ideal for motor control centers, switchgear assemblies, and feeder disconnects in manufacturing, processing plants, and utility rooms. The 600 V/400 A rating plus NEMA 3R protection makes it a robust choice where reliable isolation and environmental resistance are required, reducing downtime during maintenance and enhancing personnel safety.
The unit carries CE Marking and a NEMA 3R enclosure rating, indicating suitability for indoor and outdoor use in many international markets. It aligns with standard industrial protection practices, although additional regional certifications may be required for specific projects; always verify with your compliance team during specification.
By providing durable enclosure protection, reliable 600 V/400 A performance, and quick, safe operation, the ER3R-400J3PB reduces unplanned downtime and maintenance labor. Streamlined sourcing from a familiar Bussmann-series ecosystem lowers spare parts inventory, while CE compliance and sturdy construction support faster project deployment and improved long-term uptime.