Eaton ER4P-100CF3SR Enclosed Rotary Disconnect Switch - NEMA 4P
Part Number: ER4P-100CF3SR
Quick Summary
ER4P-100CF3SR is an enclosed rotary disconnect switch used for safe circuit isolation in electrical panels. Too often, field disconnects fail to provide clean isolation, risking arc flash incidents and unplanned downtime. The unit carries CE marking and a NEMA 4P rating, supporting regulatory compliance and robust weatherproof performance in demanding environments. With 600 V, 100 A, and a three‑pole configuration, it integrates with Eaton Bussmann protection devices and helps optimize spare parts inventory and maintenance programs. This combination delivers measurable business value by reducing risk, improving service reliability, and simplifying panel design for OEMs, maintenance teams, and procurement through standardized spares.
Product Information
Extended Description
ER4P-100CF3SR Eaton: Eaton Bussmann series enclosed rotary disconnect switch, Fuse type CF, Selector handle, 600V, 100A, Three-pole, Red, NEMA rating 4P
Product Name
Eaton Bussmann series enclosed rotary disconnect switch
Catalog Number
ER4P-100CF3SR
UPC
051712748537
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 4P
Voltage rating
600 V
Special features
Fuse type CF, Selector handle
Bussmann series complete full line catalog no. 1007
Bussmann series complete full line catalog no. 1007
Eaton Specification Sheet - ER4P-100CF3SR
Feature: Enclosed rotary disconnect switch with fuse type CF and selector handle. Business impact: Provides reliable, non-arcing isolation while enabling quick manual operation, reducing maintenance time and arc-flash exposure. Application: Ideal for industrial control panels and motor control centers where safe, code-compliant disconnection is required. Feature: Electrical ratings of 100A at 600V in a three-pole configuration. Business impact: Supports motor loads and feeders with adequate current capacity and voltage withstand, improving protection coordination and system reliability. Application: Useful for heavy-duty machinery disconnects and emergency shutoff points. Feature: NEMA 4P weatherproof enclosure with CE marking. Business impact: Ensures enclosure integrity in exposed or harsh environments, meeting regulatory expectations and minimizing ingress-related failures. Application: Outdoor installations or damp environments in manufacturing or process facilities. Feature: Compact dimensions and modest weight (11.8 in x 10.8 in x 9.84 in, 6 lb). Business impact: Simplifies integration, reduces cabinet depth requirements, and lowers shipping/handling costs. Application: OEM panel design and retrofit projects where space is at a premium. Feature: Three-pole configuration with selector handle. Business impact: Provides straightforward operation and clear isolation in multi-line circuits, facilitating safer maintenance and faster replacement. Application: Control panels, MCCs, and service disconnects that require reliable multi-pole switching.
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FAQs
Begin by de-energizing the panel and locking out power. Mount the three-pole disconnect in the designated enclosure section using manufacturer-recommended fasteners, ensuring proper alignment with the selector handle. Connect conductors per the wiring diagram, mount the CF fuse assembly as specified, and verify that the 600 V rating and 100 A capacity match the circuit requirements. After installation, perform a functional test with the switch in both OFF and ON positions, confirming clean isolation and absence of stray current. Adhere to CE and local code requirements during commissioning.
The ER4P-100CF3SR is rated for 100 A at 600 V and configured as a three-pole device. This rating defines the maximum current the switch can interrupt and carry, as well as the maximum system voltage it will safely withstand. The three-pole design ensures full isolation of all three phases, reducing the risk of arc flash and improving protection coordination with downstream protection devices. These ratings support motor control, feeders, and process lines in industrial environments when used with CF-type fuses.
Yes. The unit is CE marked and features a NEMA 4P enclosure, indicating protection against dust, moisture, and other environmental contaminants. This makes it suitable for outdoor installations or harsh indoor environments where rugged isolation and weatherproofing are required. Proper mounting and sealing of enclosure entries further enhance reliability in challenging conditions, helping to minimize maintenance frequency and extend service life.
The ER4P-100CF3SR carries CE marking and a NEMA 4P rating, signaling compliance with European regulatory standards and readiness for weatherproof operation in demanding environments. While UL listings are not specified in the provided data, these two certifications cover essential regional and environmental compliance for many industrial applications, aiding in procurement and design validation.
ROI benefits stem from safer, faster maintenance, reduced downtime, and streamlined spare-part inventories due to standardization with Eaton Bussmann protection devices. The 600 V, 100 A, three-pole design provides reliable circuit disconnection for motors and feeders, while the CE/NEMA 4P-rated enclosure minimizes weather-related failures. Over the life of a panel or MCC, these factors translate to lower maintenance labor, fewer unplanned outages, and improved equipment availability.