Eaton ER12-40N6SR Enclosed Rotary Disconnect - NEMA 12
Part Number: ER12-40N6SR
Quick Summary
The Eaton ER12-40N6SR enclosed rotary disconnect switch provides safe, rapid isolation for industrial equipment. Maintenance teams often face exposed fusing, miswiring, and lengthy lockout procedures that slow downtime recovery. CE marked, NEMA 12 enclosure, and a 600 V, 40 A rating ensure compliance and robust protection in harsh environments. Together with its non-fused selector design, it supports safer, faster disconnection and streamlined panel wiring. For engineers and procurement teams, the ER12-40N6SR blends reliability with clear spec information to reduce risk and total cost of ownership. Its compact dimensions and CE compliance support easier installation and safer maintenance in compact control cabinets. The device is designed for non-fused isolation with selector operation, enabling precise control over motor circuits and power distribution.
Product Information
Extended Description
ER12-40N6SR Eaton: Eaton Bussmann series enclosed rotary disconnect switch, Non-fused, Selector, 600V, 40A, Red, NEMA rating 12
Product Name
Eaton Bussmann series enclosed rotary disconnect switch
Catalog Number
ER12-40N6SR
UPC
051712414784
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
40A
NEMA rating
NEMA 12
Voltage rating
600 V
Special features
Non-fused, Selector
Bussmann series complete full line catalog no. 1007
Bussmann series complete full line catalog no. 1007
Eaton Specification Sheet - ER12-40N6SR
Feature: Non-fused, selector-operated design. Business Impact: Eliminates fuse handling and reduces spares inventory, increasing system availability. Application: Ideal for service disconnects on industrial controllers and motor circuits, enabling fast, safe lockout/tagout during maintenance. Feature: 600 V, 40 A electrical rating. Business Impact: Supports typical motor starting currents and feeder lines without overheating or nuisance trips, reducing downtime and extending equipment life. Application: Suitable for motor drives, conveyors, and machine tools in industrial panels. Feature: NEMA 12 enclosure with CE marking. Business Impact: Provides dust and moisture protection in harsh environments while ensuring international compliance for global installations. Application: Office workshops, production lines, and outdoor-rated enclosures where controlled isolation is needed. Feature: Enclosed rotary switch design and compact footprint. Business Impact: Enables space-saving panel layouts and faster installation with reduced wiring complexity. Application: Mid-size control cabinets and compact machine enclosures. Feature: Lightweight, compact dimensions. Business Impact: Simplifies mounting and retrofit projects, lowering installation time and labor costs. Application: Retrofit programs and new equipment in space-constrained industrial facilities. Feature: Non-fused selector operation for rapid isolation. Business Impact: Improves maintenance efficiency and reduces electrical hazard exposure during servicing. Application: Routine servicing, panel maintenance, and safety-focused shutdown procedures in automation lines.
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FAQs
For proper installation, plan for a dedicated, accessible service disconnect location within the control panel. Ensure clearance for operator access and secure wiring routes to minimize strain on terminations. Use lockout/tagout procedures during maintenance, and verify the non-fused selector remains clearly labeled to prevent accidental energization.
The ER12-40N6SR is rated for 600 V and 40 A, aligning with common industrial motor and feeder applications. Its non-fused selector design reduces fuse-related failure points, while the NEMA 12 enclosure provides dependable protection against dust and moisture in demanding environments, helping maintain uptime and safety in automation systems.
Yes, the ER12-40N6SR carries CE Marking, indicating compliance with applicable European health, safety, and environmental requirements. The NEMA 12 enclosure supports use in dusty, damp, or mildly corrosive industrial settings, making it well-suited for production floors, assembly lines, and machine tool areas that require durable isolation means.
Using a non-fused selector disconnect reduces spare parts costs by eliminating fuse replacements and simplifies stock management. It also shortens maintenance cycles by enabling quick, safe disconnection, lowering downtime during servicing and improving overall equipment availability, which translates to lower lifecycle costs and faster project payback.
The ER12-40N6SR is part of the Eaton Bussmann series and is designed for integration with standard electrical protection and control gear. When planning, verify enclosure dimensions, mounting clearance, and wiring compatibility with your control panel design. The device’s 600 V, 40 A rating and NEMA 12 enclosure support reliable performance in common industrial applications.