Eaton ER4-100J3PB Enclosed Rotary Disconnect - NEMA 4
Part Number: ER4-100J3PB
Quick Summary
The Eaton ER4-100J3PB is an enclosed rotary disconnect switch used for safe isolation in electrical distribution and machinery control. When teams must de-energize large circuits quickly without risking personnel in the panel, performance consistency matters. This unit is CE marked and provides NEMA 4 protection with a 600 V rating and 100 A capacity, enabling reliable operation in harsh environments. Built for panel builders and maintenance crews, it reduces wiring complexity and streamlines lockout/tagout procedures while delivering rugged dependability for daily switching tasks. By leveraging the Bussmann series design, it aligns with common fusing practices and ensures compatibility across safety-critical installations, delivering measurable business value in uptime, safety, and compliance.
Product Information
Extended Description
ER4-100J3PB Eaton: Eaton Bussmann series enclosed rotary disconnect switch, Fuse type J, Pistol handle, 600V, 100A, Black, NEMA rating 4
Product Name
Eaton Bussmann series enclosed rotary disconnect switch
Catalog Number
ER4-100J3PB
UPC
051712415774
Product Length/Depth
17.2 in
Product Height
13.3 in
Product Width
15.1 in
Product Weight
19 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
100A
NEMA rating
NEMA 4
Voltage rating
600 V
Special features
Fuse type J, Pistol handle
Bussmann series complete full line catalog no. 1007
Bussmann series complete full line catalog no. 1007
Eaton Specification Sheet - ER4-100J3PB
Enclosed rugged construction delivers NEMA 4 protection for the ER4-100J3PB, guarding the switch against dust, moisture, and washdown. The result is lower corrosion-driven failures and fewer unplanned outages in outdoor or damp environments. This reliability is critical for panel builders and maintenance crews seeking consistent isolation performance. 600 V, 100 A rating and fuse-type J compatibility enable robust high-current switching with predictable behavior. In practice, that means fewer trips, safer de-energization sequences, and clear coordination with Bussmann series fuses in protective schemes across machines and lines. Pistol handle operation supports safe, glove-friendly manual actuation and straightforward lockout/tagout procedures. This reduces operator exposure during maintenance and accelerates safe service windows in facilities with frequent routine switching. CE marking and documented specifications simplify compliance workflows for QA audits and international installations. Engineers can rely on standard data sheets and specifications to validate panel designs, expedite procurement, and maintain consistent safety documentation. Dimensional and weight data—17.2 in length, 13.3 in height, 15.1 in width, 19 lb—help determine fit within existing cabinets and mounting footprints. The unit’s compact footprint, combined with a straightforward pistol-handle interface, supports rapid installation and service in retrofit projects. Compatibility with the Bussmann series and 600 V isolation aligns with common electrical protection schemes, reducing the need for exotic parts while improving spare-part readiness in maintenance inventories.
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FAQs
Installation requires verifying the enclosure’s NEMA 4 rating and ensuring adequate space for a 17.2 inch depth, 15.1 inch width, and 13.3 inch height. Mount the switch securely, connect the incoming and outgoing conductors to the fuse-type J terminals, and integrate the pistol-handled actuator with proper lockout/tagout procedures. Maintain clearance for service and ensure compatibility with Bussmann fuse components where applicable.
The ER4-100J3PB offers a 600 V voltage rating and 100 A current rating, with a NEMA 4 enclosure for wet or dusty environments. It carries the CE marking and is designed to pair with Bussmann fuse type J systems. These specifications support safe isolation in industrial panels and ensure compliance with international safety and performance standards.
Yes. The NEMA 4 enclosure rating provides protection against water, dust, and light washdown exposure, making it suitable for outdoor equipment, damp plant rooms, and harsh industrial settings. This ruggedness helps prevent corrosion-related failures and supports reliable operation during maintenance cycles in challenging environments.
Routine maintenance is minimal due to the switch’s rugged enclosure and durable components. Inspect sealing and mounting integrity during periodic service, verify clean actuator operation of the pistol handle, and ensure fusing components remain compatible with fuse type J. The unit’s design emphasizes long life, quick replacement parts, and predictable performance with low ongoing upkeep.
The upgrade delivers improved uptime through reliable isolation, faster maintenance windows thanks to the pistol-handle operation, and stronger compliance with CE and NEMA 4 requirements. By reducing unplanned outages and streamlining lockout/tagout procedures, facilities typically experience lower labor costs, fewer safety incidents, and a shorter time to return-to-service after inspections or repairs.