Eaton ER4-40N6SB Enclosed Rotary Disconnect - NEMA 4
Part Number: ER4-40N6SB
Quick Summary
Eaton ER4-40N6SB is an enclosed rotary disconnect switch for reliable service isolation in electrical cabinets. It addresses the common challenge of unexpected energization during maintenance by providing a clear, mechanical break in the circuit. This design highlights CE marking and a rugged NEMA 4 enclosure suitable for harsh industrial environments, helping protect personnel and equipment. The non-fused selector simplifies maintenance and reduces wiring complexity, while the 600 V and 40 A ratings cover a broad range of control circuits. By delivering safety, durability, and straightforward installation, it supports faster commissioning and lower total cost of ownership for panel builders and plant engineers.
Product Information
Extended Description
ER4-40N6SB Eaton: Eaton Bussmann series enclosed rotary disconnect switch, Non-fused, Selector, 600V, 40A, Black, NEMA rating 4
Product Name
Eaton Bussmann series enclosed rotary disconnect switch
Catalog Number
ER4-40N6SB
UPC
051712414692
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 4
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 - ER4-40N6SB
Feature → Business Impact → Application: Enclosed rotary disconnect design provides a clear, mechanical isolation point, reducing arc flash risk and facilitating safer maintenance in electrical cabinets. This supports uptime, operator safety, and regulatory compliance for medium-to-large control panels in manufacturing and process environments. Feature → Business Impact → Application: Non-fused selector simplifies switch position changes and minimizes maintenance complexity, lowering spare parts and training costs while enabling quick reconfiguration of control logic in automation loops. Feature → Business Impact → Application: 600 V, 40 A ratings cover a wide range of conveyor, machine, and line control circuits, enabling reliable power control without oversizing components. Feature → Business Impact → Application: NEMA 4 enclosure delivers protection against dust, water ingress, and harsh worksite conditions, improving reliability in dirty or outdoor installations. Feature → Business Impact → Application: CE marking and Bussmann series compatibility streamline European compliance and integration with existing Eaton protection products, reducing procurement fragmentation. Feature → Business Impact → Application: Compact, straightforward installation and robust construction shorten panel build time and reduce field retrofit costs for OEMs and end users.
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FAQs
Install the ER4-40N6SB in a standard electrical enclosure compatible with Bussmann series devices. Mount using panel hardware, wire the incoming and outgoing conductors to the designated terminals, and ensure the selector is operable with a full 90-degree turn. Verify CE compliance and perform a functional test after energizing the circuit with proper lockout/tagout procedures.
The ER4-40N6SB is rated for 600 V and 40 A, with a NEMA 4 enclosure. It is CE marked, aligning with essential EU directives. It is a non-fused, selector-type switch intended for service isolation in electrical panels and automation equipment, suitable for a wide range of industrial control applications.
Yes. The device carries a NEMA 4-rated enclosure, offering protection against dust, water, and similar harsh conditions. While not explosion-proof, its enclosure design makes it appropriate for outdoor or damp indoor locations typical in manufacturing floors and outdoor equipment housings when proper mounting is used.
Ideal for electrical control panels, conveyors, and machine control circuits in manufacturing and packaging lines. It serves as a reliable service disconnect for maintenance, enabling safe isolation before work on downstream loads, and integrates smoothly with Eaton Bussmann series protection components for a cohesive panel design.
Because it is non-fused with a simple selector, maintenance involves periodic operation checks and ensuring the enclosure remains clean and dry. The design reduces downtime during maintenance and commissioning, contributing to lower unplanned outages and a faster return on investment for panel builders and process plants.