Eaton DH224NWKX Heavy Duty Fusible Safety Switch - UL Listed
Part Number: DH224NWKX
Quick Summary
The Eaton DH224NWKX heavy duty fusible safety switch is a rugged 240 V, 3‑phase protection device designed for industrial control panels and switchgear. It helps engineers avoid downtime caused by undersized protection or compatibility gaps during retrofit projects. UL Listed, NEC barrier compliant, and housed in a NEMA 12/NEMA 3R enclosure, this unit is ready for indoor and selective outdoor use. With a 400 A rating and robust EnviroLine construction, it delivers reliable protection while simplifying maintenance and compliance. Ideal for motor control centers, process lines, and harsh-environment panels, it supports safe isolation and lifecycle cost reduction across critical automation applications.
Product Information
Extended Description
DH224NWKX Eaton: Eaton Heavy duty single-throw fused safety switch, 400 A, NEMA 12/3R, Fusible without neutral, Two-pole, Two-wire, 240 V, Max Hp: 50, 125, 50 hp (3PH @ Std fuse/time delay/250 Vdc), (2)#1/0-(2)300 kcmil or (1)#1/0-(1)750 kcmil Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH224NWKX
UPC
782114224014
Product Length/Depth
57 in
Product Height
11 in
Product Width
27 in
Product Weight
120 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.
Compliances
NEC 230.62 (C) Compliant Barrier
Certifications
UL Listed
Enclosure
NEMA 12, NEMA 3R
Enclosure material
Painted galvanized steel
Fuse class provision
Class H
Fuse configuration
Fusible without neutral
Number Of Poles
Two-pole
Number of wires
2
Type
Heavy duty fusible safety switch
Amperage Rating
400A
HP rating - max
50, 125, 50 hp (3PH @ Std fuse/time delay/250 Vdc)
NEMA rating
NEMA 4X (Stainless)
Voltage rating
240V
Product Category
Heavy Duty, Harsh Environment - EnviroLine
Feature: 400 A amperage rating for 240 V service; Business Impact: Supports protection of large motors and feeders with minimal voltage drop, reducing fuse substitution frequency; Application: Industrial pumps and conveyors in power distribution systems. Feature: Fusible without neutral with Class H fuse provision; Business Impact: simplifies wiring and reduces purchase costs while maintaining selective coordination; Application: Main feeders in switchgear assemblies. Feature: NEMA 12 and NEMA 3R enclosure in painted galvanized steel; Business Impact: provides indoor and outdoor reliability against dust, splash, and corrosion; Application: Exterior panels and damp environments. Feature: UL Listed and NEC 230.62 barrier compliance; Business Impact: ensures regulatory conformity and safe clearance; Application: Compliance-driven installations in control rooms and plant floors. Feature: Dimensions 57 in L x 27 in W x 11 in H and 120 lb weight; Business Impact: predictable footprint for panel layouts and logistics; Application: Retrofit projects and new builds with limited space. Feature: HP rating up to 50/125/50 hp (3PH @ std fuse/time delay/250 Vdc); Business Impact: supports a wide motor load range with standard protections; Application: Motors, fans, and hydraulic systems in automation lines.
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FAQs
The DH224NWKX is designed for 240V three‑phase systems and uses a two‑pole, fusible configuration without neutral. It requires two conductors plus a suitable protective fuse class (Class H) and mounting within a NEMA 12/3R enclosure. Ensure proper panel space, clearance, and wiring torque per Eaton installation guidelines to maintain safe isolation and reliable protection.
This switch provides a 400 A amperage rating with maximum horsepower ratings listed at 50, 125, and 50 hp for three‑phase operation at standard fuse and time-delay settings with 250 Vdc. Match motor full-load current to the switch rating, and coordinate with the selected fuses to ensure proper selective coordination and safe operation.
Yes. The enclosure is rated NEMA 12 and NEMA 3R, with painted galvanized steel construction suitable for indoor and outdoor damp environments. The EnviroLine designation emphasizes rugged protection against dust, moisture, and corrosion in challenging facilities, making it appropriate for motor control and switching in industrial plants.
The DH224NWKX is UL Listed and complies with NEC 230.62 barrier requirements for safe operation. These certifications support compliance with electrical codes and safety standards for industrial panels, reducing regulatory risk during audits and installations.
The product carries Eaton's warranty policy 25-000, with one year from installation or eighteen months from shipment, whichever occurs first. This coverage, plus access to Eaton datasheets and technical support, helps reduce maintenance risk and optimize life-cycle costs for replacement parts and service.