Eaton DH423SNRKLPR Safety Switch - UL Listed NEMA 3R

Part Number: DH423SNRKLPR
Manufacturer
Eaton
Part number
DH423SNRKLPR

Quick Summary

Eaton DH423SNRKLPR Safety Switch provides heavy-duty protection for four-pole motor circuits. For engineers and maintenance managers, selecting a switch that starts reliably under load and minimizes arc-flash risk is a common challenge. UL Listed certification and a NEMA 3R enclosure ensure dependable operation in outdoor or damp environments, while the fusible with switched neutral configuration and Series K design support safe, code-compliant motor control. The Posi-Lok reverse pin feature adds secure, tool-free connections during maintenance, reducing service time. With a 100A, 240V rating and a rugged build, this device helps reduce downtime, streamline installation, and justify total cost of ownership in industrial automation and power distribution applications.

Product Information

Extended Description

DH423SNRKLPR Eaton: Eaton Quick Connect Safety Switch, Heavy Duty, Single-Throw, 100A, 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
DH423SNRKLPR
UPC
786685373751
Product Length/Depth
18.57 in
Product Height
38.15 in
Product Width
13.68 in
Product Weight
85 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
100A
Number Of Poles
Four-pole
Voltage rating
240V
Enclosure
NEMA 3R
Fuse configuration
Fusible with switched neutral
Series
Series K
Feature: Four-pole, 100A, 240V operation delivers decisive protection for heavy-duty motor circuits. Business impact: minimizes overload risk and streamlines coordination with downstream protection devices, reducing startup delays and unplanned downtime. Application: ideal for conveyors, pumps, fans, and other high-demand loads in manufacturing, packaging, and processing facilities. Feature: Fusible with switched neutral and Series K construction. Business impact: provides selective, safe disconnection with clear fault service paths, supporting safer maintenance windows and lower arc-flash exposure. Application: suits control panels, MCCs, and outdoor switchgear where predictable de-energization is essential for risk mitigation and uptime. Feature: Posi-Lok reverse pin and fast, tool-free connections. Business impact: enables secure, repeatable servicing while minimizing mis-wiring risk and restoration time. Application: field replacements, panel refurbishments, and routine testing in demanding industrial environments where dependable mechanical interlocks support fast, safe maintenance. Feature: NEMA 3R weather-rated enclosure with UL Listed certification. Business impact: delivers reliable performance in outdoor or damp locations, reducing weatherproofing costs and warranty risk. Application: outdoor process lines, rooftop equipment, and facilities with exposure to rain, dust, humidity, or washdown environments common in process manufacturing. Feature: Series K heavy-duty construction and four-pole configuration. Business impact: durable build supports long service life in harsh environments, reducing replacement cycles, spare parts consumption, and maintenance costs. Application: power distribution and motor-control installations across manufacturing, mining, and infrastructure sectors requiring robust, reliable disconnects. Feature: Installation compatibility and precise sizing with standard mounting patterns. Business impact: accelerates commissioning, reduces retrofit effort, and enables smoother integration with Eaton protection devices across the control system. Application: new builds, upgrades, and retrofits in industrial automation where fast, dependable safety switching influences overall project timelines.

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FAQs

Plan for four-pole mounting with a compatible enclosure footprint, ensure the fusible with switched neutral configuration matches the control schematic, and verify the 100A/240V ratings align with the motor circuit. Use the Posi-Lok reverse pin for secure, repeatable connections during service and follow NEC/UL guidelines during wiring and commissioning.
The device is a four-pole safety switch rated for 100A at 240V, with fusible protection and a switched neutral. It features a NEMA 3R weather-rated enclosure, UL Listed certification, the Series K heavy-duty design, and Posi-Lok reverse pin. Dimensions include 18.57 in length, 38.15 in height, and 13.68 in width; weight is 85 lb.
Yes. The NEMA 3R enclosure provides weather resistance suitable for outdoor and damp locations, while UL Listed certification supports compliant installation in industrial settings. For outdoor process lines or rooftop equipment, this switch offers reliable isolation with reduced weatherproofing concerns.
UL Listed certification confirms adherence to recognized electrical safety standards, while the NEMA 3R enclosure rating denotes suitability for outdoor and damp environments. The combination supports code compliance, safer maintenance practices, and predictable performance in harsh industrial environments.
The DH423SNRKLPR’s rugged build and 100A/240V rating reduce replacement cycles and downtime, lowering maintenance costs over time. A one-year warranty from installation (or 18 months from shipment) provides budget protection, while Posi-Lok and fusible with switched neutral features streamline service and minimize field rework.