Eaton DH321NGK Fusible Safety Switch - UL Listed
Part Number: DH321NGK
Quick Summary
DH321NGK fusible safety switch from Eaton provides robust protection for three-phase motor circuits in industrial environments. This design helps prevent unexpected downtime, electrical faults, and safety incidents caused by fuse failure or short circuits. UL Listed, NEC 230.62 barrier-compliant, and a rugged NEMA 1 painted steel enclosure deliver regulatory certainty and durable indoor performance. For engineers and maintenance teams, this switch complements standard 30A power control, supports #14-2 Cu/Al wiring, and accepts a neutral connection. The combination of regulatory compliance, durable construction, and straightforward installation translates to lower lifecycle costs and faster project timelines.
Product Information
Extended Description
DH321NGK Eaton: Eaton Heavy duty single-throw fused safety switch, 30 A, NEMA 1, Painted steel, Class H, Fusible, 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
UPC
782113208503
Product Length/Depth
16.5 in
Product Height
16 in
Product Width
9.5 in
Product Weight
14 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 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
DH321NGK delivers measurable protection and efficiency benefits across your control system. Feature: 30A amperage with a three-pole, four-wire configuration enables direct protection of standard motor and drive loads in industrial panels. Business impact: minimizes overload-induced wear and unplanned downtime, improving line availability. Application: suitable for 240V, 3-phase motor circuits in machine cells and production lines. Feature: Class H fusible provision and fuse with neutral support precise fault isolation and reliable shutdown sequences. Business impact: reduces risk of damaging surge events and supports targeted maintenance. Application: compatible with common control schemes and selective coordination strategies. Feature: NEMA 1 painted steel enclosure offers rugged indoor protection and easy mounting in standard enclosures. Business impact: simplifies retrofit projects and reduces field modifications. Application: ideal for indoor electrical rooms and control cabinets. Feature: UL Listed and NEC 230.62 barrier-compliant with a neutral-capable design. Business impact: regulatory certainty and safer installations. Application: supports compliance-focused audits and routine inspections. Feature: copper/aluminum wire compatibility (#14-2) and four-wire terminations enable straightforward wiring. Business impact: lowers installation time and sourcing risk. Application: common building and plant wiring practices. Feature: 240V operation with HP ratings up to 7.5/5 hp across 1.3PH Std/TD, enhancing protection for a range of load profiles. Business impact: broadens applicability and reduces the need for multiple devices. Application: motor control in mixed-load facilities. Feature: weighs 14 lb with compact dimensions for easy handling. Business impact: reduces installation labor and simplifies serviceability. Application: field replacements and panel upgrades.
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FAQs
Plan for a 240V three-phase supply with four-wire capability and a neutral, using #14-2 Cu/Al conductors. The unit uses a NEMA 1 painted steel enclosure, is UL Listed, and NEC 230.62 barrier compliant, which supports safe indoor panel installations. Ensure appropriate space for the 16.5 in depth and 16 in height, and verify mounting in a compliant enclosure or control cabinet.
Yes. The DH321NGK protects motors up to 1.5, 3/3, and 7.5/5 hp depending on configuration (1.3PH Std/TD, 250 Vdc). It is designed for 240V three-phase systems and includes a neutral, making it appropriate for motor and drive loads in many manufacturing cells and processing lines. The 30A rating matches common small to mid-size motor applications.
The unit is UL Listed for safety and performance. It also features NEC 230.62 barrier compliance, which supports safe, code-conforming installations in control panels. Its NEMA 1 enclosure provides indoor protection against dust and incidental contact. These certifications assist with procurement audits and regulatory workflows in industrial facilities.
The fusible with neutral design allows straightforward fuse replacement in the field, minimizing service interruptions. A compact, durable enclosure and standardized wiring (Cu/Al #14-2) speed installation and future servicing. UL and NEC compliance reduce the need for rework or corrective actions during regulatory reviews, contributing to lower total cost of ownership.
Yes. It supports #14-2 Cu/Al conductors with a four-wire configuration, suitable for many industrial control circuits. The enclosure is NEMA 1 and designed for indoor mounting in standard control cabinets, panels, or retrofit installations, enabling straightforward integration with existing electrical infrastructure and minimizing additional enclosure adaptations.