Eaton DH427SNRKLPR Safety Switch - NEMA 3R, 800A UL Listed
Part Number: DH427SNRKLPR
Quick Summary
Eaton quick connect heavy duty safety switch isolates power safely in demanding industrial environments. Manufacturing lines demand fast, reliable isolation with minimal downtime and seamless integration with existing safety systems. UL Listed certification and a NEMA 3R enclosure deliver weather-resistant protection and regulatory confidence, while the 800A rating and four-pole design support high-current, three-phase applications. Designed for fusible with switched neutral, Series K, and Posi-Lok reverse pin, it simplifies field wiring, reduces miswiring risks, and accelerates maintenance without compromising safety. Compatible with common low-voltage distribution practices and Eaton’s accessories, it strengthens plant safety programs and uptime across distribution panels, motor control centers, and industrial equipment. This combination of rugged design and concrete specifications makes it a reliable choice for OEMs and maintenance teams aiming for predictable operation and faster compliance.
Product Information
Extended Description
DH427SNRKLPR Eaton: Eaton Quick Connect Safety Switch, Heavy Duty, Single-Throw, 800A, 240V, 4P, Fusible with switched neutral, Series K, NEMA 3R, Posi-Lok reverse pin
Product Name
Eaton quick connect heavy duty safety switch
Catalog Number
DH427SNRKLPR
UPC
786685374079
Product Length/Depth
32.87 in
Product Height
85.59 in
Product Width
21.73 in
Product Weight
540 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Certifications
UL Listed
Special features
Posi-Lok reverse pin
Type
Heavy Duty, Single-Throw
Amperage Rating
800A
Number Of Poles
Four-pole
Voltage rating
240V
Enclosure
NEMA 3R
Fuse configuration
Fusible with switched neutral
Series
Series K
Commercial Distribution, Switching Devices, Volume 2, Tab 1
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
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Eaton Specification Sheet - DH427SNRKLPR
Feature: Four-pole design rated at 800A at 240V. Business Impact: Enables reliable isolation of high-current three-phase loads, reducing bus stress and improving fault containment. Application: Motor control centers, conveyors, and heavy machinery where robust power disconnect is essential. Feature: Fusible with switched neutral. Business Impact: Provides selective fuse protection with safe neutral switching, minimizing fault energy and enabling straightforward coordination. Application: Feeders and critical loads in distribution panels where precise protection is required. Feature: NEMA 3R enclosure. Business Impact: Delivers weather-resistant, outdoor-ready protection, expanding installation options and lowering environment-related failures. Application: Outdoor panels, damp locations, and rugged manufacturing floors. Feature: Posi-Lok reverse pin. Business Impact: Simplifies alignment and secure engagement during wiring, reducing installation time and human error. Application: Field wiring and service calls where quick, reliable connections are needed. Feature: Series K and UL Listed certification. Business Impact: Standardized component family supports easier sourcing and regulatory confidence across plant backbones. Application: OEM panel builds and maintenance programs seeking consistent performance. Feature: Warranty and serviceability. Business Impact: One-year limited warranty (or 18 months from shipment) lowers total cost of ownership and supports long-term uptime. Application: OEM deployments and retrofit projects prioritizing predictable service life and support.
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FAQs
When integrating the DH427SNRKLPR, ensure a sturdy panel or enclosure that accommodates a four-pole device and allows for proper cooling in a NEMA 3R environment. Plan for fusible-with-switched-neutral wiring, use of the Posi-Lok reverse pin for correct alignment, and secure mounting to minimize vibration. Verify clear labeling and that the neutral conductor is routed as specified to maintain safe, code-compliant operation.
Yes. The DH427SNRKLPR is a four-pole safety switch designed for three-phase systems and is rated at 800A. It operates at 240V and uses a fusible with switched neutral configuration, making it suitable for heavy-duty motor circuits and large-load feeders in industrial settings.
This model carries UL Listed certification, providing recognized safety compliance for electrical devices. It also features a NEMA 3R enclosure rating, indicating suitability for outdoor or damp environments. Together, these specifications support regulatory adherence and reliable performance in challenging industrial installations.
Ideal for high-current, 3-phase applications such as motor control centers, conveyors, and large process lines. The 800A rating, four-pole configuration, and fusible with switched neutral support reliable power isolation, while the NEMA 3R enclosure accommodates outdoor or harsh environments common to industrial facilities.
Expect reduced downtime due to robust construction and quick wiring with the Posi-Lok reverse pin. The fusible with switched neutral simplifies protection coordination, and the UL Listed/NEMA 3R specs improve reliability and regulatory confidence. Over time, this translates to lower maintenance costs, fewer field wiring errors, and faster, more predictable uptime for key production lines.