Eaton ER4-30N3PR Enclosed Rotary Disconnect Switch - NEMA 4
Part Number: ER4-30N3PR
Quick Summary
ER4-30N3PR is an enclosed rotary disconnect switch used for isolating electrical circuits in industrial control panels. This design helps eliminate nuisance outages by providing safe, lockout-ready isolation during maintenance. The unit carries CE marking and features a rugged NEMA 4 enclosure, with a 600 V, 30 A electrical rating for dependable performance in harsh environments. Its compact footprint and pistol-style handle support easy installation and ergonomic operation, making it a practical choice for OEM panel builders and field service teams seeking reliable, compliant circuit isolation in demanding facilities.
Product Information
Extended Description
ER4-30N3PR Eaton: Eaton Bussmann series enclosed rotary disconnect switch, Non-fused, Pistol handle, 600V, 30A, Red, NEMA rating 4
Product Name
Eaton Bussmann series enclosed rotary disconnect switch
Catalog Number
ER4-30N3PR
UPC
051712488198
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
30A
NEMA rating
NEMA 4
Voltage rating
600 V
Special features
Non-fused, Pistol handle
Bussmann series complete full line catalog no. 1007
Bussmann series complete full line catalog no. 1007
Eaton Specification Sheet - ER4-30N3PR
Feature → Business Impact → Application: Enclosed rotary disconnect switches provide safe, contained switching with a non-fused architecture, reducing arc exposure and simplifying wiring in control cabinets. This translates to safer maintenance, lower risk of incidental energization, and faster service windows for lineside equipment in manufacturing cells. Application: machine safety circuits and control panels where quick isolation is required without adding fuse-related complexity. Feature → Business Impact → Application: A 600 V, 30 A rating ensures compatibility with typical industrial feeders and motor control centers, supporting scalable panel designs and uniform protection across multiple lines. Application: motor starters, MCCs, and feeder disconnect points in industrial plants. Feature → Business Impact → Application: NEMA 4 enclosure delivers weather and dust resistance, enabling outdoor or harsh indoor installations without enclosure compromise. Application: outdoor switchgear rooms, wash-down areas, and exposed factory floors. Feature → Business Impact → Application: CE marking confirms regulatory compliance for multinational projects, smoothing cross-border procurement and installation. Application: OEMs delivering panels to global customers. Feature → Business Impact → Application: Compact form factor and pistol handle improve ergonomics and space utilization, allowing easier retrofits in crowded panels. Application: retrofit projects and new builds with tight panel real estate.
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FAQs
Begin by verifying system voltage and current ratings match the ER4-30N3PR specifications (600 V, 30 A). Mount the switch on a suitable panel chassis using the pistol handle for safe operation, connect line and load terminals per the wiring diagram, and ensure the enclosure integrity remains intact to preserve the NEMA 4 protection. Lockout/tagout procedures should be followed during maintenance to prevent accidental energization.
ER4-30N3PR is rated for 600 V, suitable for AC circuits commonly found in industrial control environments. For DC applications, verify your specific system requirements and consult the Eaton datasheet to confirm compatibility and any necessary accessories or ratings adjustments.
NEMA 4 indicates the enclosure is weatherproof and dust-tight, suitable for outdoor or harsh indoor environments. This reduces ingress of water and particulates, improving reliability in wash-down areas, exposed bays, or damp factory floors.
ER4-30N3PR is a non-fused rotary disconnect switch, offering isolation without integrated fusing. This supports upstream fusing strategies and external protection schemes while providing straightforward maintenance and cycling for switchgear and motor control centers.
Key ROI factors include improved safety during maintenance, reduced downtime from reliable isolation, and easier sourcing due to CE compliance and standard Bussmann series compatibility. Its compact form and pistol handle enhance ergonomics, enabling faster installations and easier retrofits in space-constrained panels.