Eaton DH321NGK-CSA Heavy Duty Fusible Safety Switch - UL Listed
Part Number: DH321NGK-CSA
Quick Summary
The Eaton DH321NGK-CSA heavy duty fusible safety switch provides reliable circuit protection for industrial motor circuits. When downtime and arc-flash risk threaten production, a robust disconnect is essential. This unit carries UL Listed and CSA Certified markings and NEC 230.62 barrier compliance, ensuring safer installations inside control panels. The NEMA 1 enclosure, painted steel construction, and Class H fuse provisions support indoor, general-purpose use, while a three-pole, four-wire configuration with #14-2 Cu/Al wiring aligns with common panel designs. With a 30A rating at 240V and a broad horsepower range, it offers dependable protection for pumps, conveyors, and other factory equipment while helping you meet code requirements and reduce risk.
Product Information
Extended Description
DH321NGK-CSA Eaton: Eaton Heavy duty single-throw fused safety switch, 30 A, NEMA 1, Painted steel, Class H, Fusible with neutral, Three-pole, Four-wire, 240 V, Max Hp: 1.5, 3/ 3, 7.5/ 5 hp (1,3PH @Std/TD, 250 Vdc), #14-#2 Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH321NGK-CSA
UPC
786685223001
Product Length/Depth
16.8 in
Product Height
15.88 in
Product Width
9.5 in
Product Weight
17 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 CSA Certified
Enclosure
NEMA 1
Enclosure material
Painted steel
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
Wire size
#14-2 AWG Cu/Al
Amperage Rating
30A
HP rating - max
1.5, 3/ 3, 7.5/ 5 hp (1,3PH @Std/TD, 250 Vdc)
NEMA rating
NEMA 1
Voltage rating
240V
Product Category
Heavy Duty, Fusible with neutral
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Specification Sheet - DH321NGK-CSA
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: 30A amperage rating at 240V with a three-pole, four-wire configuration. Business Impact: provides precise overcurrent protection and reliable motor shutdown, reducing equipment damage and unplanned downtime. Application: ideal for conveyors, pumps, and other three-phase loads in standard industrial panels. Feature: Fusible with neutral and Class H fuse provision. Business Impact: enables selective protection and safe neutral return for control circuits, improving fault isolation and maintainability. Application: suitable for motor control centers and panelboards requiring coordinated fusing. Feature: NEMA 1 painted steel enclosure. Business Impact: robust indoor protection with easy mounting and repaintability, supporting long service life in clean, dry environments. Application: control cabinets in manufacturing floors and assembly lines. Feature: Certifications and compliance. Business Impact: UL Listed and CSA Certified markings simplify regulatory acceptance and installation paperwork, while NEC 230.62 barrier compliance reduces the risk of arc-flash incidents. Application: essential for code-compliant panel builds and safety audits. Feature: Wiring and HP compatibility. Business Impact: accepts #14-2 Cu/Al wiring and supports HP ranges up to multiple motors per the 1.5/3/3 and 7.5/5 hp ratings, enabling flexible motor sizing. Application: practical for machines with varied motor loads across a production line.
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FAQs
Yes. The unit is a three-pole, four-wire design with a fusible switch that includes a neutral path, making it suitable for most 4-wire, 3-phase control circuits. It accepts #14-2 Cu/Al wiring and supports standard industrial motor connections, helping simplify panel design and wiring checks during installation.
Key specs are 30A amperage, 240V voltage, and a three-pole, four-wire configuration with fusible neutral. This combination supports motor protection for modest horsepower loads while enabling compact, code-compliant panels. Designers should account for fuse sizing, short-circuit protection, and neutral conductor routing in MCCs and control panels.
The enclosure is a NEMA 1 painted steel design intended for indoor, dry environments. It provides basic protection against dust and incidental contact but is not rated for outdoors or wet conditions. For outdoor or harsh environments, consider additional enclosure protection or a higher NEMA rating with appropriate sealing.
The product is UL Listed and CSA Certified, with NEC 230.62 barrier compliance. These certifications affirm electrical safety, quality, and code compliance, reducing risk during inspections and accelerating procurement approval in regulated facilities. They also support warranty claims and service arrangements in compliance-driven projects.
Maintenance focuses on fuse replacement and periodic inspection of wiring health and terminal tightness. The unit’s Class H fuse design provides reliable protection, reducing motor damage costs and downtime. A one-year warranty from installation (or 18 months from shipment) offers added value and risk mitigation for long-term motor control reliability.