Eaton DH364NCK Heavy duty fusible safety switch - NEMA 4X
Part Number: DH364NCK
Quick Summary
Eaton DH364NCK is a heavy duty fusible safety switch designed for demanding industrial protection. This unit delivers reliable isolation and short-circuit protection for 200 A circuits in 600 V systems, making it a robust choice for machine control and power distribution. The design pairs a NEMA 4X, Krydon non-metallic enclosure with UL Listed certification to withstand washdown and corrosion in harsh environments. NEC compliance, including NEC 230.62 barrier requirements, helps engineers meet safety standards without added complexity. By integrating with industrial control panels and fuse-switch assemblies, this solution reduces downtime and simplifies maintenance while supporting compliant, scalable electrical protection for growing facilities.
Product Information
Extended Description
DH364NCK Eaton: Eaton Heavy duty single-throw fused safety switch, 200 A, NEMA 4X, Non-metallic, KRYDON, Class H, Fusible with neutral, Three-pole, Four-wire, 600 V, Max Hp: 50, 50/ 125, 150 hp (1/3PH @480, 600 V), #6-300 kcmil Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH364NCK
UPC
782114296110
Product Length/Depth
16.46 in
Product Height
27.25 in
Product Width
24.25 in
Product Weight
61 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 4X
Enclosure material
Non-metallic, KRYDON
Fuse class provision
Class H
Fuse configuration
Fusible with neutral
Number Of Poles
Three-pole
Number of wires
4
Type
Heavy duty fusible safety switch
Amperage Rating
200A
HP rating - max
50, 50/ 125, 150 hp (1/3PH @480, 600 V)
NEMA rating
NEMA 4X (Non-Metallic)
Voltage rating
600 V
Product Category
Heavy Duty, Fusible with neutral
Feature: 200 A amperage rating and 600 V voltage rating enable protection of high-load motors and feeders. Business Impact: Reduces fuse-related fault outages and supports reliable motor starting, improving overall equipment uptime. Application: Suitable for heavy machinery lines and distribution panels in manufacturing settings. The DH364NCK delivers improved reliability and controlled energy management for critical loads. Feature: NEMA 4X enclosure with Krydon non-metallic material resists harsh washdown and corrosive environments. Business Impact: Lower field maintenance costs and extended service life in washdown zones. Application: Food & beverage, chemical processing, and outdoor installations. Feature: Fusible with neutral and Class H fuse provide selective protection and simpler field wiring. Business Impact: Faster fault isolation and reduced replacement costs, with predictable coordination. Application: Multi-wire, three-pole systems in controlled environments. Feature: Three-pole, four-wire configuration supports safe grounding and neutral return paths. Business Impact: Improved safety and compatibility with existing panel wiring. Application: Industrial control panels and machine control networks. Feature: UL Listed and NEC 230.62 barrier compliance ensure regulatory alignment. Business Impact: Streamlined approval processes and minimized risk of non-compliance audits. Application: Panel fabrication, OEM assemblies, and retrofit projects. Feature: 50/125, 150 hp (1/3PH @480, 600 V) rating supports a wide range of motor loads. Business Impact: Facilitates scalable motor drive design and cost-effective protection. Application: Motors up to 150 hp in 480 V systems. Feature: Wire capacity up to #6-300 kcmil Cu/Al supports large feeders and wire runs. Business Impact: Flexibility in field wiring and reduced need for mid-span terminations. Application: Heavy-duty electrical distribution and control circuits.
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FAQs
The DH364NCK is a three-pole, four-wire switch rated for 200 A and 600 V. Plan for a Krydon non-metallic NEMA 4X enclosure and use conductor ranges of #6-300 kcmil Cu/Al. Install with a neutral in fusible with neutral configuration, and follow NEC 230.62 barrier guidelines to ensure safe clearance and access for servicing.
Its NEMA 4X enclosure with Krydon material provides corrosion and washdown resistance while UL Listed certification confirms compliance. The3-pole design and Class H fusible protection deliver fast, selective disconnection of faulted circuits, reducing unscheduled downtime and enabling safer, faster maintenance in harsh production settings.
Yes. The unit supports a three-pole, four-wire setup with fusible-with-neutral capability and large Cu/Al conductor ranges (#6-300 kcmil). This enables straightforward integration into existing control panels and motor feeder circuits while preserving neutral pathways and safe disconnection practices.
The switch is UL Listed and designed to meet NEC 230.62 barrier requirements. It is rated for NEMA 4X enclosures, making it suitable for damp, corrosive, and washdown environments while delivering reliable safety in industrial protection and circuit control applications.
The DH364NCK reduces maintenance frequency through rugged Krydon construction and a durable fusible protection scheme, which minimizes unexpected outages. Its high-current rating and compatible wiring reduce panel redesigns, while UL/NEC compliance lowers regulatory risk, offering a favorable total cost of ownership in mission-critical lines.