Eaton ER12-400J3PR Enclosed Rotary Disconnect - NEMA 12
Part Number: ER12-400J3PR
Quick Summary
The Eaton ER12-400J3PR is an enclosed rotary disconnect switch for isolating 400A circuits in industrial control panels. It addresses downtime and arc-flash concerns by delivering a rugged enclosure with a pistol handle for safe, rapid disconnections. The unit is CE marked and designed for NEMA 12 environments, combining robust protection with reliable performance. This model integrates seamlessly into Eaton Bussmann series protections, delivering long-term value through improved safety and faster maintenance, while leveraging standard 600 V, 400 A ratings for straightforward system upgrades.
Product Information
Extended Description
ER12-400J3PR Eaton: Eaton Bussmann series enclosed rotary disconnect switch, Fuse class J, Pistol handle, 600V, 400A, Red, NEMA rating 12
Product Name
Eaton Bussmann series enclosed rotary disconnect switch
Catalog Number
ER12-400J3PR
UPC
051712416122
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 12
Voltage rating
600 V
Special features
Fuse class J, Pistol handle
ER12-400J3PR~ENC DISC400J NEMA12 RED
ER12-400J3PR~ENC DISC400J NEMA12 RED
Eaton Specification Sheet - ER12-400J3PR
Feature → Business Impact → Application: The enclosed rotary disconnect switch provides a dedicated isolation path for high-current lines, reducing exposure time during maintenance and lowering arc-flash risk in panel work. This translates to safer operations and faster service calls in manufacturing lines and machine shops using 600 V circuits. Application-wise it shines in control panels and switchgear assemblies that require a dependable, ready-to-install 400A disconnector within Bussmann-series configurations. Feature → Business Impact → Application: Fuse class J protection inside the unit offers selective coordination and protective backup, improving fault containment and uptime while minimizing equipment damage in process lines. Application includes packaging lines and material handling systems where uninterrupted power and quick reset are critical. Feature → Business Impact → Application: Pistol handle design delivers ergonomic, tool-free operation for technicians, reducing opening/closing time and operator fatigue across multiple work shifts. Application spans robotic cells and packaging equipment where frequent disconnect/reconnect cycles occur. Feature → Business Impact → Application: NEMA 12 enclosure rating ensures dust, drip, and environmental protection, supporting longer service intervals in harsh industrial settings. Application covers automotive, food & beverage, and packaging facilities with stringent cleanliness and protection requirements. Feature → Business Impact → Application: CE compliance and documented specifications simplify procurement, easing approvals and compliance audits for global projects. Application suits international installations and OEM integrations seeking standardized electrical protection components.
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FAQs
The ER12-400J3PR is designed for seamless integration with Eaton Bussmann series protection schemes, sharing the same safety and installation philosophy as other Bussmann components. It fits standard control panels and switchgear, supports 600 V operation, and aligns with 400 A service requirements, enabling straightforward retrofits or new builds without extensive redesigns. For installation, use the pistol handle and ensure proper enclosure integrity to maintain NEMA 12 protection.
The ER12-400J3PR provides a 600 V voltage rating and a 400 A amperage rating, with a NEMA 12 enclosure. These specifications support reliable isolation in harsh, dust-prone environments while maintaining safe operation and ease of maintenance. The unit’s fuse class J protection adds selective fault isolation, enabling safer, faster fault handling in industrial control circuits.
Yes, the ER12-400J3PR is CE marked, indicating conformity with relevant European safety and performance standards. The NEMA 12 enclosure protects against dust, non-corrosive liquids, and ambient elements typical of indoor industrial settings, reducing unwanted ingress and extending service intervals. This combination supports global projects requiring compliant, rugged disconnect switches for panel isolation.
Installers should verify mounting compatibility with standard control panels and ensure secure electrical connections rated for 400 A. Maintain enclosure integrity to preserve NEMA 12 protection, and use the pistol handle for controlled operation. Plan for proper clearance around the switch to facilitate maintenance and include CE-compliant wiring practices to support regulatory compliance.
The ER12-400J3PR offers durable, enclosed isolation with minimal moving parts, contributing to lower maintenance costs and less downtime. Its CE compliance and rugged NEMA 12 enclosure protect against environmental ingress, reducing repair frequency. Expect predictable maintenance cycles aligned with 600 V, 400 A usage, and periodic inspection of the pistol handle and connections for peak reliability.