Eaton DH321FDK-GCL Heavy Duty Fusible Safety Switch NEMA
Part Number: DH321FDK-GCL
Quick Summary
Eaton DH321FDK-GCL heavy duty fusible safety switch isolates power for three-pole, 240 V industrial controls. Operators often face downtime from inadequate isolation and enclosure ingress; this unit delivers reliable dust-tight protection and service entrance readiness. Key certifications include UL Listed, NEC 230.62 (C) compliant barrier, and a NEMA 12/3R enclosure, with field-modified NEMA 3R capability via a drain hole when required. For manufacturers and contractors, this translates to safer maintenance, easier compliance, and streamlined installation. The product also supports Neutral Kit configurations for service entrances, providing flexibility to match 3-phase motor and control circuits while reducing wiring and installation time.
Product Information
Extended Description
DH321FDK-GCL Eaton: Eaton Heavy duty single-throw fused safety switch, Mill-duty, dust-tight, 30 A, NEMA 12/3R, Painted galvanized steel, Class H, Fusible without neutral, Three-pole, Three-wire, 240 V, Max Hp: 1.5, 3/ 7.5 hp (1,3PH Std/3PH TD), #14-#2 Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH321FDK-GCL
UPC
782114889572
Product Length/Depth
20 in
Product Height
8.5 in
Product Width
9.5 in
Product Weight
22 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
Catalog Notes
Suitable for service entrance use with a Neutral Kit installed. Can be field modified to meet NEMA 3R rainproof requirements when a factory provided drain hole is opened.
Enclosure
NEMA 12, NEMA 3R
Enclosure material
Painted galvanized steel
Fuse class provision
Class H
Fuse configuration
Fusible without neutral
Number Of Poles
Three-pole
Number of wires
3
Type
Heavy duty fusible safety switch
Wire size
#14-2 AWG Cu/Al
Amperage Rating
30A
HP rating - max
1.5, 3/ 7.5 hp (1,3PH Std/3PH TD)
NEMA rating
NEMA 12/3R
Voltage rating
240V
Product Category
Heavy Duty, Mill-duty
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Specification Sheet - DH321FDK-GCL
Feature: Three-pole, three-wire 30 A operation with 240 V rating → Business Impact: Safe, reliable interruption of power to motors and controls reduces arc flash exposure and protects personnel; Application: Industrial motor controls and panels in harsh environments. Feature: NEMA 12/NEMA 3R enclosure with painted galvanized steel construction → Business Impact: Dust-tight and weather-resilient housing lowers maintenance costs and extends service life; Application: Mill floors, outdoor controller enclosures, and dusty plants. Feature: Fusible without neutral and Class H fuse provision → Business Impact: Flexible protection and simplified wiring paths cut installation time and material costs; Application: Customizable service entrance and motor circuits. Feature: Neutral Kit compatibility and field-modifiable NEMA 3R capability → Business Impact: Adaptable to site requirements without replacing hardware; Application: Outdoor/indoor installations requiring rain exposure resilience. Feature: UL Listed, NEC compliant barrier → Business Impact: Regulatory confidence and easier audits; Application: Compliance-driven facilities and safety programs. Feature: Galvanized steel weight and dimensions (20 in L × 9.5 in W × 8.5 in H) → Business Impact: Predictable footprint for panel design and retrofits; Application: Replacement in existing equipment racks and control panels. Feature: 30 A amperage rating and 1.5–7.5 HP capacity across 1- and 3-phase configurations → Business Impact: Scalable protection for small to mid-size drives and machinery; Application: Mill-duty switching and process lines.
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FAQs
DH321FDK-GCL can be used for service entrance applications with a Neutral Kit installed, enabling stable three-wire service entry protection. It can also be field modified to meet NEMA 3R rainproof requirements by opening a factory drain hole, expanding its suitability for outdoor or harsh environments.
The unit is rated for 30 A, 240 V, three-pole operation with fuse class H. It is fusible without neutral, supporting #14-2 AWG Cu/Al wiring, which helps streamline downstream wiring and improves protection of motor circuits.
Ideal for industrial controls, mill-duty panels, motor control centers, and service entrances in dusty or humid facilities. Its NEMA 12/3R enclosure and field-modifiable 3R capability make it versatile for indoor and outdoor installations where reliable isolation is essential.
The DH321FDK-GCL is UL Listed and features a NEC 230.62 compliant barrier, ensuring regulatory alignment for electrical installations. Its NEMA 12/3R enclosure further supports compliance with environmental and safety standards in industrial settings.
A robust galvanized steel enclosure, UL listing, and a one-year Eaton warranty help minimize downtime and service costs. The unit’s modularity—neutral kit compatibility, field-modifiable NEMA ratings, and durable construction—reduces replacement cycles and simplifies routine maintenance.