Eaton ER1-400J3PR Enclosed Rotary Disconnect Switch - NEMA 1
Part Number: ER1-400J3PR
Quick Summary
Eaton ER1-400J3PR is an enclosed rotary disconnect switch designed to safely isolate 600 V circuits in electrical panels and industrial power distributions. This solution helps minimize maintenance downtime and improve reliability when line loads change or during panel restarts. It carries CE marking and is designed for NEMA 1 enclosures, supporting safe operation in controlled industrial spaces. With a 400 A rating and a pistol-style handle, it provides quick, secure operation while reducing the risk of accidental contact. For OEMs and maintenance teams, this device complements Bussmann series protection strategies and supports compliant, scalable protection in machine control panels and power distribution.
Product Information
Extended Description
ER1-400J3PR Eaton: Eaton Bussmann series enclosed rotary disconnect switch, Fuse class J, Pistol handle, 600V, 400A, Red, NEMA rating 1
Product Name
Eaton Bussmann series enclosed rotary disconnect switch
Catalog Number
ER1-400J3PR
UPC
051712416016
Product Length/Depth
0.001 in
Product Height
0.001 in
Product Width
0.001 in
Product Weight
19 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
400A
NEMA rating
NEMA 1
Voltage rating
600 V
Special features
Fuse class J, Pistol handle
ER1-400J3PR~ENC DISC400J NEMA1 RED
ER1-400J3PR~ENC DISC400J NEMA1 RED
Eaton Specification Sheet - ER1-400J3PR
Feature: Enclosed rotary disconnect switch rated for 600 V up to 400 A with a NEMA 1 enclosure and fuse class J. Business impact: Reliable isolation and rugged protection against dust and incidental contact, enabling safer panel work and reduced risk of arcing. Application: Ideal for indoor machine control panels and industrial power distribution enclosures where compact, compliant isolation is required. Feature: Pistol handle for improved grip and fast operation. Business impact: Faster switch actuations and lower operator fatigue during maintenance cycles, improving uptime. Application: High-cycle environments in manufacturing and process plants. Feature: CE marked and Bussmann series compatibility. Business impact: Global regulatory readiness and seamless integration with existing protection schemes, simplifying procurement and compliance. Application: OEM builds and retrofits across industrial automation. Feature: 400 A, 600 V electrical rating. Business impact: Scalable protection for medium-sized drives and feeders, reducing overload risk and enabling safer commissioning. Application: Panel feeders, motor control centers, and equipment racks. Feature: Compact, user-friendly design with pistol handle. Business impact: Reduced installation footprint and easier field servicing, lowering total cost of ownership. Application: Retrofit installs and new panel builds in constrained spaces.
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FAQs
ER1-400J3PR is designed as a direct-fit enclosed rotary disconnect switch for Bussmann series protection ecosystems. It supports a 600 V rating and 400 A current, in a NEMA 1 enclosure with a pistol handle for fast operation. Use it where existing Bussmann protection modules share the same enclosure interfaces and mounting patterns to minimize retrofit complexity and preserve panel integrity.
Key specifications include a 400 A amperage rating, 600 V voltage rating, NEMA 1 enclosure, and fuse class J. Safety features center on positive isolation, reduced exposure to live parts, and a handle design that supports secure operation. CE marking confirms global compliance, making it suitable for international electrical installations and standardized safety practices.
This unit excels in machine control panels, power distribution enclosures, and indoor industrial environments such as manufacturing lines, packaging, and process automation. Its 400 A capacity and 600 V rating make it appropriate for mid-size feeders and motor control centers, offering reliable isolation without excessive footprint in constrained electrical rooms.
ER1-400J3PR carries CE marking for global compliance and is designed for NEMA 1 enclosure protection. While other certifications are not listed in the data, the CE designation and NEMA 1 rating provide a clear framework for safe indoor use and regulatory alignment in most European and North American control environments.
The pistol handle and enclosed design facilitate quick, safe isolations, reducing maintenance time and operator risk. Its compatibility with Bussmann series protections simplifies spare parts planning and lifecycle management, contributing to lower downtime, easier commissioning, and improved uptime metrics in manufacturing and industrial settings.