Eaton ER4-100N3PR Enclosed Rotary Disconnect - NEMA 4
Part Number: ER4-100N3PR
Quick Summary
ER4-100N3PR is an enclosed rotary disconnect switch used to safely isolate circuits in electrical panels and industrial equipment. Engineers often struggle with reliable isolation during servicing, increasing arc-flash risk and unplanned downtime. With CE marking and a NEMA 4 enclosure, it combines regulatory compliance with rugged protection for 600 V systems up to 100 A. For cost-conscious projects, it supports flexible installation options and reliable electrical protection, integrating smoothly with Eaton protection schemes and minimizing maintenance overhead.
Product Information
Extended Description
ER4-100N3PR Eaton: Eaton Bussmann series enclosed rotary disconnect switch, Non-fused, Pistol handle, 600V, 100A, Red, NEMA rating 4
Product Name
Eaton Bussmann series enclosed rotary disconnect switch
Catalog Number
ER4-100N3PR
UPC
051712488433
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
100A
NEMA rating
NEMA 4
Voltage rating
600 V
Special features
Non-fused, Pistol handle
ER4-100N3PR~ENCLOSED DISCONNECTS
ER4-100N3PR~ENCLOSED DISCONNECTS
Eaton Specification Sheet - ER4-100N3PR
Feature → Business Impact → Application: Non-fused design with a pistol handle reduces spare parts and speeds safe disconnection, cutting maintenance time and exposure risk on live lines. This translates to lower downtime and safer service windows in assembly lines and process plants, especially where quick isolation is critical. Feature → Business Impact → Application: 600 V voltage rating and 100 A amperage rating provide dependable protection for mid‑range power circuits, enabling compact, centralized control within industrial panels and machine cabinets. This supports scalable installations in manufacturing facilities and data centers with standardized Eaton components. Feature → Business Impact → Application: NEMA 4 enclosure and CE compliance offer rugged ingress protection and regulatory assurance, improving reliability in harsh environments such as washdown zones and exterior sites. This reduces future service calls and strengthens compliance documentation for audits. Feature → Business Impact → Application: Enclosed, non-fused hardware aligns with Eaton Bussmann series compatibility, simplifying procurement, stocking, and retrofits in existing electrical protection architectures, accelerating project timelines and lowering total cost of ownership. Feature → Business Impact → Application: Easy integration with pistol handle operation improves operator ergonomics and fault clearance speed, delivering measurable gains in labor efficiency and safety during routine maintenance and emergency shutdowns.
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FAQs
Plan for a suitable enclosure, compatible mounting hardware, and proper wiring access to support a non-fused switch with a pistol handle. Ensure CE compliance and NEMA 4 enclosure suitability for your site conditions, and reference Eaton's installation guidelines for safe, compliant commissioning.
The device provides a 600 V voltage rating and a 100 A amperage rating, with a NEMA 4 enclosure for weather and dust resistance and a non-fused construction that simplifies switching and maintenance in standard industrial circuits.
Yes, the NEMA 4 enclosure offers protection against water and dust ingress suitable for indoor and protected outdoor environments. Confirm site exposure and consider additional protective measures if the location experiences extreme weather or direct washdown conditions.
Non-fused design reduces fuse-related maintenance steps and stock, while the pistol handle enables quick, one-handed initiation and safe disconnection. This combination lowers maintenance time, reduces arc-flash exposure, and speeds safety shutdowns during servicing.
Full documentation includes Eaton catalogs and the specification sheet. The device is part of the Eaton Bussmann series, ensuring compatibility with existing Eaton protection devices and facilitating streamlined procurement and retrofits.