Eaton ER3R-40N6SB Enclosed Rotary Disconnect Switch - NEMA 3R
Part Number: ER3R-40N6SB
Quick Summary
The Eaton ER3R-40N6SB is an enclosed rotary disconnect switch designed to safely isolate circuits in industrial control panels. Many projects struggle with retrofit fit, space constraints, and downtime when selecting isolation devices. With a NEMA 3R enclosure and CE marking, ER3R-40N6SB delivers reliable performance in both indoor and outdoor settings. In addition to its 600 V and 40 A ratings, it features non-fused selector operation that simplifies maintenance and reduces replacement costs for fielded equipment. This combination supports safer shutdowns, easier wiring, and faster commissioning, delivering clear business value for electrical protection and circuit control applications.
Product Information
Extended Description
ER3R-40N6SB Eaton: Eaton Bussmann series enclosed rotary disconnect switch, Non-fused, Selector, 600V, 40A, Black, NEMA rating 3R
Product Name
Eaton Bussmann series enclosed rotary disconnect switch
Catalog Number
ER3R-40N6SB
UPC
051712414685
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 3R
Voltage rating
600 V
Special features
Non-fused, Selector
ER3R-40N6SB~ENC DISC40NF NEMA 6P BLK
ER3R-40N6SB~ENC DISC40NF NEMA 6P BLK
Eaton Specification Sheet - ER3R-40N6SB
Feature → Business Impact → Application: Non-fused, selector operation reduces maintenance cycles and wiring complexity, lowering total cost of ownership while delivering quick fault isolation for critical processes in manufacturing lines and switchgear assemblies. Application: Industrial panels needing reliable, fast isolation with minimal downtime. Feature → Business Impact → Application: 600 V, 40 A electrical rating enables compatibility with standard industrial loads, supporting scalable control architectures and safer energization sequences. Application: Control panels and motor control centers requiring robust current handling without fuse replacement. Feature → Business Impact → Application: NEMA 3R enclosure offers outdoor and indoor protection, expanding deployment options and reducing enclosure needs. Application: Outdoor substations or exterior equipment in harsh environments where weather sealing is essential. Feature → Business Impact → Application: CE marked compliance simplifies global procurement, enabling cross-border project execution and supplier consolidation. Application: Projects with regulatory and safety alignment across multiple regions. Feature → Business Impact → Application: Compact dimensions and light weight facilitate easy retrofit and compatibility with tight panel spaces. Application: Retrofit projects in refurbished facilities where space is at a premium.
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FAQs
Installation of the ER3R-40N6SB follows standard practices for enclosed rotary disconnects. Ensure panel cutouts accommodate the switch body and that the selector handle aligns with the enclosure opening. Verify clean, dry mounting surfaces and provide adequate clearance for wiring and future maintenance. The non-fused design simplifies replacement during service events, and the compact footprint supports retrofits in space-constrained panels.
The device is rated for 600 V and 40 A, with a NEMA 3R enclosure. These ratings indicate suitability for standard industrial control circuits and many outdoor installations, supporting safe isolation without fusing. When designing, ensure your load current does not exceed 40 A and that wiring, protection devices, and wiring insulation are rated for 600 V. The non-fused option reduces replacement steps in simple isolation scenarios.
Yes. The ER3R-40N6SB carries a NEMA 3R enclosure rating, which provides protection against falling rain and moderate humidity, making it suitable for many outdoor and semi-exposed applications. CE marking further supports compliance for international deployments. For extreme environments, assess additional enclosure protection or environmental ratings beyond 3R as needed for your specific site conditions.
The ER3R-40N6SB is CE marked and uses a NEMA 3R enclosure. CE marking demonstrates conformity with EU safety, health, and environmental requirements, facilitating cross-border procurement. NEMA 3R ensures rain and weather resistance for indoor/outdoor installations. These certifications help with risk management, regulatory audits, and ensuring installers meet regional electrical codes.
The non-fused, selector-based design reduces spare part requirements and simplifies maintenance checks, as there are fewer fuse components to manage. This can shorten downtime during routine isolation or fault response, improving line availability. While upfront costs align with other non-fused disconnects, the device’s reliability and simpler wiring contribute to lower lifecycle maintenance and faster project ROI in manufacturing and processing environments.