Eaton ER1-100J3PR Rotary Disconnect Switch - NEMA 1
Part Number: ER1-100J3PR
Quick Summary
The Eaton ER1-100J3PR Rotary Disconnect Switch is a safe, reliable isolation device for control panels and industrial power distribution. End-users and maintenance teams often face downtime when disconnects are hard to operate or misapplied, risking safety and efficiency. This unit provides a NEMA 1 enclosure, a 600 V rating, 100 A capacity, fuse class J protection, and a pistol-style handle to boost operator safety and service speed. Although SIL, CE, or IP certifications are not specified in this model’s data, the rugged Bussmann enclosure and standard Bussmann fuses integrate with common electrical protection schemes, delivering dependable isolation and streamlined spare-part compatibility. Used with all switches and designed for straightforward installation, it supports standardized protection schemes, reduces spare-part variety, and helps optimize maintenance workflows.
Product Information
Extended Description
ER1-100J3PR Eaton: Eaton Bussmann series enclosed rotary disconnect switch, Fuse class J, Pistol handle, 600V, 100A, Red, NEMA rating 1
Product Name
Eaton Bussmann series enclosed rotary disconnect switch
Catalog Number
ER1-100J3PR
UPC
051712415811
Product Length/Depth
17.1 in
Product Height
13.3 in
Product Width
15.2 in
Product Weight
21 lb
Warranty
Not Applicable
Compliances
Not Applicable
Amperage Rating
100A
NEMA rating
NEMA 1
Voltage rating
600 V
Special features
Fuse class J, Pistol handle
Used with
Used with all switches
Bussmann series complete full line catalog no. 1007
Bussmann series complete full line catalog no. 1007
Eaton Specification Sheet - ER1-100J3PR
Enclosed rotary disconnect switches offer robust isolation of energized circuits while keeping live parts enclosed. This design reduces arc-flash exposure and simplifies lockout/tagout procedures, translating to safer maintenance routines in machine control panels and power distribution centers. The 600 V voltage rating and 100 A current capacity ensure compatibility with many medium-power systems, enabling scalable protection without over-specifying equipment and allowing easier retrofits in existing lines. Fuse class J protection provides immediate, reliable overcurrent protection with widely available spares, reducing downtime and inventory complexity for service teams. A pistol-style handle enhances ergonomics and control during disconnection, lowering operator fatigue and the potential for switching errors in high-demand environments. The NEMA 1 enclosure supports indoor, non-harsh industrial settings, simplifying installation and ensuring consistent protection across standard control architectures. By aligning with Bussmann series catalogs, procurement gains standardized parts, faster sourcing, and predictable maintenance cycles, which lowers total cost of ownership over the asset lifecycle.
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FAQs
ER1-100J3PR is designed as an enclosed rotary disconnect switch that works with standard Bussmann fuse protection (class J) and common control panel hardware. Its footprint and mounting align with typical switchgear assemblies, enabling straightforward retrofits in existing control panels and motor control centers while preserving safety protocols and lockout/tagout procedures.
The device is rated for 600 V and 100 A, with a NEMA 1 enclosure suitable for indoor, non-harsh environments. It includes a pistol-style handle for safe operation and is designed to provide reliable isolation in control panels and switchgear applications, supporting standard electrical protection schemes without requiring specialized enclosures.
The available data does not specify CE, SIL, or IP ratings for ER1-100J3PR. For projects requiring those certifications, consult the latest Eaton datasheets or contact Eaton technical support to confirm regulatory scope and compatibility; consider alternative models with explicit CE/SIL/IP documentation if needed for your compliance requirements.
Installation is straightforward, leveraging a standard enclosure and mounting pattern compatible with common control panels. The pistol-style handle simplifies manual operation, reducing operator effort during disconnection. Ongoing maintenance benefits include standardized spare parts through Bussmann catalogs, easier stocking of 600 V/100 A protection components, and predictable service intervals due to the rugged enclosure and familiar fuse protection.
Standardizing on the ER1-100J3PR with Bussmann fuse protection delivers faster maintenance cycles, reduced downtime from easier disconnections, and reduced spare-part complexity thanks to common class J fuses. In manufacturing environments, this translates to shorter shutdown times, safer switching operations, and lower total cost of ownership over the life of motor control and power distribution assets.