Eaton DH324NCK Heavy Duty Fusible - NEMA 4X UL Listed
Part Number: DH324NCK
Quick Summary
The Eaton DH324NCK Heavy Duty Fusible Safety Switch provides safe isolation for 200 A, three‑phase circuits in industrial control panels. This solution helps reduce arc flash risk and equipment damage during maintenance by delivering a robust, clearly accessible disconnection point. Key certifications and ratings include UL Listed and a NEMA 4X enclosure, with corrosion‑resistant Krydon construction and Class H fuse provisions for reliable protection. By combining strong enclosure protection with a neutral‑inclusive fusible design, this switch offers long‑term reliability and easier compliance. It pairs well with Eaton distribution solutions, enabling streamlined procurement, faster installation, and lower maintenance costs for plants demanding rugged, compliant control devices.
Product Information
Extended Description
DH324NCK Eaton: Eaton Enhanced visible blade single-throw safety switch, Corrosion resistant, 200 A, NEMA 4X, Non-metallic, KRYDON, Class H, Neutral, Three-pole, Four-wire, 240 V, Max Hp: 25, 60 hp (3PH @Std, TD), #6-300 kcmil Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH324NCK
UPC
782114296097
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.
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
25, 60 hp (3PH @Std, TD)
NEMA rating
NEMA 4X (Non-Metallic)
Voltage rating
240V
Product Category
Heavy Duty, Fusible with neutral
Enclosure and corrosion resistance: The Krydon non‑metallic enclosure with a NEMA 4X rating delivers corrosion resistance and washdown compatibility, reducing maintenance intervals in demanding environments. Business impact is lower lifecycle cost and higher uptime, especially in food & beverage, chemical processing, or outdoor switchgear applications. This supports reliable isolation of motor loads and control circuits in harsh facilities. Three‑pole, four‑wire configuration: Facilitates correct grounding and neutral handling for three‑phase systems, simplifying wiring during panel upgrades and new installations. The result is safer commissioning and easier fault diagnosis, ideal for conveyors, pumps, and process equipment across manufacturing lines. 200 A rating and 240 V operation: Provides robust capacity for common industrial motors (up to 60 hp) while maintaining compact footprint, enabling design flexibility in MCCs and control centers. This translates to reduced hardware complexity and improved short‑circuit protection coordination. Fused with neutral and Class H fuse provision: Offers selective protection with a proven fuse class, improving coordination with upstream protection devices and minimizing nuisance outages. Useful for motor starting sequences and critical loads, reducing downtime during load changes. UL Listed certification: Confirms compliance with safety standards and simplifies procurement audits, making integration with NEC/IEC practices straightforward for plant engineers and procurement teams. Warranty and service: Backed by Eaton’s policy ensuring coverage from installation through the initial operating period, supporting predictable maintenance planning and service windows across multi‑site operations. Compatibility and installation advantages: Designed for easy retrofit into existing switchgear with standard dimensions and mounting practices, saving time on field adjustments and enabling faster project execution in modernization initiatives.
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FAQs
Begin by verifying the 200 A rating and 240 V compatibility with the panel's feeders. Connect three hot lines to the line terminals, bond the neutral via the fusible with neutral configuration, and ensure a proper ground connection. Verify enclosure integrity and seal against moisture per NEMA 4X guidelines, then confirm UL Listed compliance during commissioning. This minimizes rework and ensures safe, code‑compliant isolation points for maintenance.
The three‑pole, four‑wire design supports reliable three‑phase control with a neutral, while the Class H fuse provision provides selective protection for motor circuits up to 60 hp at 240 V. The 200 A rating accommodates typical MCC feeders, reducing protection coordination issues. Combined with a corrosion‑resistant Krydon enclosure, it maintains performance in demanding environments such as conveyors and process lines.
Yes. The NEMA 4X enclosure and Krydon non‑metallic construction are specifically designed for washdown and corrosive environments. This enclosure protection minimizes ingress and corrosion, helping to maintain safe operation in plants with frequent cleaning or exposure to chemicals, while UL Listed certification confirms compliance with safety standards.
Key certifications for the DH324NCK include UL Listed status and NEMA 4X enclosure protection. These ratings support NEC/IEC compliance for industrial safety, particularly in applications requiring robust enclosure protection and certified electrical isolation devices. The Class H fuse configuration further supports fuse‑level protection coordination in motor and process circuits.
The DH324NCK is covered under Eaton’s warranty policy, offering one year from installation or eighteen months from shipment, whichever comes first. Regular visual inspections, thermal imaging during commissioning, and periodic contact checks of the fuse compartment are recommended to sustain reliability. In multi‑site operations, standardized spare parts and scheduled maintenance reduce downtime and total cost of ownership.