Eaton ER4X-400J3PB Enclosed Rotary Disconnect - NEMA 4X
Part Number: ER4X-400J3PB
Quick Summary
Enclosed rotary disconnect switch from Eaton isolates power in industrial control panels and motor circuits. It helps address maintenance delays and safety concerns by providing quick, verifiable isolation during servicing. This model carries CE marking and a rugged NEMA 4X enclosure, ensuring reliable operation in harsh environments and washdown areas. The 400 A, 600 V rating supports high-demand feeders, while the pistol-style handle enables safe, tool-free operation and lockout/tagout compatibility. Build and wiring are aligned with Bussmann series standards, offering familiar installation and accessories. For engineers seeking compliant, durable isolation with minimal footprint, this unit delivers predictable performance, reduced downtime, and straightforward integration into existing protection schemes.
Product Information
Extended Description
ER4X-400J3PB Eaton: Eaton Bussmann series enclosed rotary disconnect switch, Fuse type J, Pistol handle, 600V, 400A, Black, NEMA rating 4X
Product Name
Eaton Bussmann series enclosed rotary disconnect switch
Catalog Number
ER4X-400J3PB
UPC
051712495844
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
400A
NEMA rating
NEMA 4X
Voltage rating
600 V
Special features
Fuse type J, Pistol handle
ER4X-400J3PB~ENC DISC400J NEMA4XSS BLK
ER4X-400J3PB~ENC DISC400J NEMA4XSS BLK
Eaton Specification Sheet - ER4X-400J3PB
Feature: Enclosed rotary disconnect switch with fuse type J and pistol handle → Business Impact: Provides rapid, verifiable isolation with operator safety features, reducing risk during maintenance and improving panel reliability → Application: Motor control centers and service disconnects in harsh environments. Feature: 600 V and 400 A rating → Business Impact: Supports high-current feeders with a compact, integrated solution, lowering external components and installation time → Application: Main feeders and control circuits in industrial plants. Feature: NEMA 4X enclosure and CE marking → Business Impact: Enables use in washdown and dusty environments while meeting regulatory requirements, lowering non-compliance risk → Application: Outdoor equipment enclosures, wash-downareas, and regulated facilities. Feature: Pistol-style handle and lockout/tagout compatibility → Business Impact: Improves maintenance safety and compliance with standard safety practices → Application: Routine servicing and safety-critical isolation. Feature: Bussmann series compatibility and standardization → Business Impact: Simplifies procurement, stock management, and cross-compatibility with protection schemes → Application: Integrated protection architectures in control panels.
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FAQs
The ER4X-400J3PB is an enclosed rotary disconnect designed to safely isolate power in industrial control panels and motor circuits. With a 600 V rating, 400 A capability, NEMA 4X enclosure, fuse type J, and a pistol-style handle, it supports reliable maintenance, reduced exposure to live circuits, and straightforward integration with Bussmann protection schemes.
This model carries CE marking for regulatory compliance and features a rugged NEMA 4X enclosure, suitable for washdown, dust, and harsh environments. The combination supports durable operation in outdoor or wet locations while ensuring isolation remains dependable during routine maintenance and emergency shutdowns.
Yes. The ER4X-400J3PB is described as part of the Eaton Bussmann series and incorporates fuse type J. Its design aligns with Bussmann protection schemes, enabling easy sourcing of compatible fuses and streamlined integration into existing electrical protection architectures.
Plan for panel-mounted installation with a focus on safe operation and lockout/tagout readiness. The pistol-style handle supports secure manual operation, while the unit’s enclosure and wiring are designed for straightforward integration into standard control panels, reducing wiring complexity and enabling quicker commissioning.
The device provides reliable, code-compliant isolation with a rugged NEMA 4X enclosure and CE marking, improving maintenance safety and minimizing unplanned downtime. Its high current rating (400 A) and voltage rating (600 V) support durable, scalable power control in demanding industrial environments, delivering a clear return on reliability and regulatory compliance.