Eaton ER3R-100N3PB Enclosed Rotary Disconnect - NEMA 3R
Part Number: ER3R-100N3PB
Quick Summary
The Eaton ER3R-100N3PB is an enclosed rotary disconnect switch designed for safe, rapid isolation in electrical panels. In tight control cabinets, accessing disconnects can be slow and expose technicians to arc flash risks; this model's pistol-style handle and clearly marked position mitigate that. It is CE marked and rated for NEMA 3R outdoor compatibility, with a 600 V, 100 A electrical rating, making it suitable for motors and process lines. With its non-fused design and rugged enclosure, it enhances overall circuit protection while delivering reliable performance for industrial automation environments and maintenance operations.
Product Information
Extended Description
ER3R-100N3PB Eaton: Eaton Bussmann series enclosed rotary disconnect switch, Non-fused, Pistol handle, 600V, 100A, Black, NEMA rating 3R
Product Name
Eaton Bussmann series enclosed rotary disconnect switch
Catalog Number
ER3R-100N3PB
UPC
051712488365
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
100A
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-100N3PB
Feature: Non-fused design and pistol handle. Benefit: Reduces switching risk and simplifies manual operation, translating to faster, safer lockout/tagout procedures in everyday maintenance tasks. Application: Ideal for service panels and machine enclosures where quick, reliable disconnection is required without fusing complicates the circuit protection strategy. Feature: 600 V and 100 A electrical rating. Benefit: Supports typical industrial motor loads and line equipment with ample headroom, improving uptime and reducing the need for oversize components. Application: Control centers, MCCs, and process lines where robust isolation is essential. Feature: NEMA 3R enclosure. Benefit: Provides rain and corrosion resistance for indoor/outdoor installations, lowering outdoor equipment exposure risk and reducing enclosure-related maintenance. Application: Outdoor panels, washdown areas, and harsh plant environments. Feature: CE Marking and Bussmann series heritage. Benefit: Assures compliance with international standards and reliable performance backed by a proven protection product line. Application: Global deployments and regulated facilities seeking consistent quality across sites. Feature: Compact, enclosure-based form factor with clear positioning. Benefit: Simplifies installation and verification, enabling faster commissioning and easier troubleshooting. Application: retrofits and new-machine builds where space is at a premium and operator clarity matters. Industry context: Engineers value devices that align with standardized control architectures, support preventive maintenance, and minimize downtime. This disconnect switch integrates with existing protection schemes, providing a seamless upgrade path for panel protection and motor-control strategies.
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FAQs
The ER3R-100N3PB is designed for standard electrical panels and control enclosures that support rotary disconnect switches. It accommodates common mounting footprints and wiring schemes used in MCCs and machine panels. When planning installation, verify panel cutout dimensions, mounting hardware compatibility, and clearances for the pistol handle to ensure safe operation and compliant lockout/tagout procedures.
Key specifications include a 600 V voltage rating, 100 A current rating, and a NEMA 3R enclosure. These figures inform conductor sizing, breaker coordination, and protection strategy in motor circuits and process lines. Design considerations include ensuring wiring insulation ratings meet 600 V, appropriate wiring accessories, and alignment with available selective coordination practices to minimize downstream power interruptions.
Yes. The ER3R-100N3PB uses a NEMA 3R enclosure designed for outdoor and semi-exposed installations, offering rain resistance and general weather protection. This makes it suitable for exterior panels, outdoor machines, and washdown-adjacent areas where reliable isolation is required without compromising safety or performance.
The unit is CE marked, indicating compliance with applicable European safety standards. This product also aligns with industry best practices for non-fused isolation in industrial control environments. For customers with regional requirements beyond CE, verify local electrical codes and any site-specific approvals to ensure full regulatory alignment.
Maintenance benefits include reduced fuse handling, fewer component replacements, and quicker switch operations, contributing to lower downtime during maintenance windows. ROI is driven by improved safety, faster commissioning, and compatibility with existing protection schemes, which can translate into lower labor costs and higher equipment availability over the asset life.