Eaton ER12-100CF3PR Enclosed Rotary Disconnect - NEMA 12
Part Number: ER12-100CF3PR
Quick Summary
Eaton ER12-100CF3PR is an enclosed rotary disconnect switch designed to safely isolate power in electrical panels and switchgear. Panel builders often wrestle with limited space, the need for safe, tool-free operation, and rapid maintenance when isolating circuits in live equipment. This unit is CE marked and built for NEMA 12 enclosures, providing dust- and water-resistance ideal for harsh factory floors, while remaining straightforward to install. It supports 600 V systems and 100 A demand without compromising safety or reliability. By combining rugged construction with ease of integration, it delivers measurable business value for OEMs, panel shops, and service teams seeking compliant, downtime-reducing protection for motor and power-distribution circuits.
Product Information
Extended Description
ER12-100CF3PR Eaton: Eaton Bussmann series enclosed rotary disconnect switch, Fuse type CF, Pistol handle, 600V, 100A, Three-pole, Red, NEMA rating 12
Product Name
Eaton Bussmann series enclosed rotary disconnect switch
Catalog Number
ER12-100CF3PR
UPC
051712748544
Product Length/Depth
11.8 in
Product Height
10.8 in
Product Width
9.84 in
Product Weight
6 lb
Compliances
CE Marked
Amperage Rating
100A
NEMA rating
NEMA 12
Voltage rating
600 V
Special features
Fuse type CF, Pistol handle
Bussmann series complete full line catalog no. 1007
Bussmann series complete full line catalog no. 1007
Eaton Specification Sheet - ER12-100CF3PR
Feature: Enclosed rotary disconnect design provides robust isolation for three-phase power in dusty, damp, or heat-prone industrial environments. Business Impact: By minimizing ingress and corrosion risk, maintenance interventions are less frequent and downtime costs drop, improving overall line uptime in panel installations and service panels. Feature: Three-pole configuration synchronizes all conductors to provide a clean, definitive disconnect across phases, supporting reliable motor protection and safe startup sequencing in demanding equipment. Business Impact: The 100A rating supports higher inrush currents and startup surges without nuisance tripping, simplifying protective relays and reducing engineering time for panel layouts. Feature: CF fuse-type compatibility integrates directly with Eaton Bussmann fuses, enabling coordinated protection schemes and straightforward spare parts management within existing electrical protection strategies. Business Impact: This alignment improves fault clearance times and minimizes unplanned outages, delivering predictable protection for critical drives and conveyors in automation lines. Feature: Pistol handle operation provides ergonomic, glove-friendly manual switching with visible 'ON'/'OFF' positions, enhancing operator confidence during routine maintenance and emergency isolation. Business Impact: Safer manual switching reduces arc flash exposure and supports compliant lockout/tagout procedures in industrial settings. Feature: Compact footprint with precise dimensions—11.8 in length, 10.8 in height, 9.84 in width—and 6 lb weight facilitates installation in crowded control panels. Business Impact: The compact size accelerates retrofits and new builds alike, while CE marking confirms international compliance for global deployment. Feature: 600 V voltage rating aligns with standard plant distributions, enabling straightforward integration with feeders and distribution blocks without reengineering protective schemes. Business Impact: Operators gain a scalable, future-proof solution suitable for upgrading older equipment and expanding multi-line installations with consistent safety margins.
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FAQs
Install the ER12-100CF3PR by mounting it in a standard panel with the three-pole rotor aligned to the bus bars, ensuring proper clearance around the pistol handle and the disconnect handle. Use appropriate fasteners and maintain suggested mounting torque. After mechanically securing, connect incoming and outgoing feeders according to the wiring diagram and verify insulation distances are maintained before applying power.
CF fuse-type compatibility allows deliberate coordination with Bussmann series fuses, enabling precise fault isolation during overloads and short circuits. This minimizes arc energy and protects downstream equipment while simplifying spare parts stocking. In motor drives, such selective protection reduces nuisance trips during startup and improves overall uptime in conveyors and machine tools.
Yes. The ER12-100CF3PR is rated for 600 V and 100 A with a three-pole configuration and NEMA 12 enclosure. It supports standard industrial control panels, offering CE marking for compliance. The compact dimensions and pistol handle support safe operation and easy integration with typical plant distributions across motor control centers.
Inspect the pistol handle and enclosure seals at regular intervals, and replace CF fuses only with the compatible Bussmann CF type when faulted. Check mounting integrity, electrical connections for tightness, and clean any dust buildup in the NEMA 12 housing. Ensure periodic functional tests and lockout/tagout procedures are followed to sustain safe operation.
The ER12-100CF3PR is designed to pair with Eaton Bussmann CF fuses for coordinated protection, simplifying spare parts and maintenance planning. Use only CF fuses rated for the same voltage and current, and confirm that the switch's three-pole scheme aligns with your panel's bus configuration. This approach minimizes downtime and ensures regulatory compliance in industrial installations.