Eaton ER3R-40N3PR Enclosed Rotary Disconnect - NEMA 3R
Part Number: ER3R-40N3PR
Quick Summary
Eaton ER3R-40N3PR is an enclosed rotary disconnect switch for safe motor control and power isolation in industrial panels. Downtime and maintenance complexity are common pain points when disconnects are difficult to operate, require excessive tools, or fail to provide clear isolation. This unit is CE marked and rated for NEMA 3R enclosures, with a 600 V, 40 A electrical rating to withstand demanding environments and provide reliable protection. The combination of a non-fused design and a pistol-style handle streamlines installation and service, while keeping wiring simple and compliant. For international projects or multi-site deployments, the CE certification and standard enclosure rating help streamline procurement and reduce engineering risk.
Product Information
Extended Description
ER3R-40N3PR Eaton: Eaton Bussmann series enclosed rotary disconnect switch, Non-fused, Pistol handle, 600V, 40A, Red, NEMA rating 3R
Product Name
Eaton Bussmann series enclosed rotary disconnect switch
Catalog Number
ER3R-40N3PR
UPC
051712487825
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, Pistol handle
Bussmann series complete full line catalog no. 1007
Bussmann series complete full line catalog no. 1007
Eaton Specification Sheet - ER3R-40N3PR
Feature → Business Impact → Application: Enclosed, non-fused rotary disconnect with pistol handle provides safe, quick isolation and reduces arc-flash risk during emergency shutdowns and routine maintenance. This translates to shorter downtime, fewer tool requirements, and easier operator training in industrial panels and machine control centers. Application: motor control centers, conveyors, and processing lines where reliable disconnects are essential. Feature → Business Impact → Application: 600 V, 40 A electrical rating supports common motor loads without overdesign, enabling compact protection and consistent performance across equipment like pumps and fans. Application: mid-range motor control tasks in packaging, material handling, and processing facilities. Feature → Business Impact → Application: NEMA 3R enclosure delivers durable protection against rain and dust in outdoor or damp environments, reducing enclosure-related failures and enabling outdoor installations. Application: outdoor switchgear, service entrances, and outdoor equipment housings. Feature → Business Impact → Application: CE marked compliance streamlines cross-border procurement and regulatory readiness, reducing engineering time and ensuring conformity with European safety standards. Application: international projects with multiple sites and suppliers. Feature → Business Impact → Application: Compact form factor and lightweight design improve panel density and ease of retrofits, lowering installation labor costs and freeing space for additional controls. Application: retrofit projects and tight-panel environments. Feature → Business Impact → Application: Non-fused design reduces spare parts and maintenance complexity, enabling straightforward replacement and easier servicing in field conditions. Application: service fleets and remote installations where quick, reliable maintenance matters.
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FAQs
The ER3R-40N3PR is designed to safely isolate electrical circuits in industrial panels and motor control centers. Its enclosed, non-fused construction with a pistol handle enables quick operation, clear visual isolation, and straightforward maintenance. It is ideal for applications requiring reliable on/off control of motors, pumps, conveyors, and other 600 V equipment, while meeting CE and NEMA 3R expectations.
Key specs include a 40 A amperage rating and a 600 V voltage rating, making it suitable for typical medium-load motor circuits. It carries a NEMA 3R enclosure rating for indoor/outdoor installation protection and is CE marked, signaling compliance with relevant European safety standards. The non-fused design supports simple, reliable switching in control panels.
Yes. The ER3R-40N3PR uses a NEMA 3R enclosure, which is designed to withstand outdoor and damp environments. This makes it appropriate for exterior equipment, weather-exposed panels, and systems where rain, dust, or humidity could otherwise compromise electrical protection. Always pair with proper installation practices to maintain enclosure integrity.
The device is CE marked, indicating conformity with European safety requirements. It also carries a NEMA 3R enclosure rating, which defines its protective capabilities in above-ground, outdoor, and damp locations. While not listed as SIL, its CE compliance and NEMA rating provide substantial regulatory alignment for international deployments.
The ER3R-40N3PR delivers value through reliable, quick-isolation switching and reduced maintenance complexity thanks to its non-fused design and pistol handle. Reduced downtime during motor start/stop cycles, simplified spare parts management, and CE/NEMA-compliant installation can lower total cost of ownership and improve panel uptime in production environments.