Eaton DH321NRK2 Heavy Duty Fusible Safety Switch-UL Listed
Part Number: DH321NRK2
Quick Summary
Eaton DH321NRK2 heavy duty fusible safety switch is a crucial piece of electrical protection used to safely disconnect 3-phase loads in industrial panels. For engineers and maintenance teams, downtime and unsafe shutdowns are costly—this switch enables quick, reliable isolation with minimal disturbance to operations. It carries UL Listed status, NEC 230.62 barrier compliance, and a NEMA 3R enclosure suitable for indoor and protected outdoor use. In production environments, it supports safer electrical distribution, simplifies maintenance, and helps ensure regulatory alignment while improving system uptime. With compatible 30A/3P operation at 240V and a rugged fusible-with-neutral design, technicians can simplify wiring, stocking, and replacement during preventive maintenance.
Product Information
Extended Description
DH321NRK2 Eaton: 30A/3P HD Non-Fusible Safety Switch 240V w/Neut NeMA 3R
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH321NRK2
UPC
786676043328
Product Length/Depth
10.77 in
Product Height
16.12 in
Product Width
8.87 in
Product Weight
20 lb
Compliances
NEC 230.62 (C) Compliant Barrier
Certifications
UL Listed
Enclosure
NEMA 3R
Fuse configuration
Fusible with neutral
Number Of Poles
Three-pole
Type
Single-Throw
Amperage Rating
30A
NEMA rating
NEMA 3R
Voltage rating
240V
Three-pole design delivers reliable control of three-phase circuits, reducing risk of phase imbalance during shutdown and enabling predictable motor control in automated lines. The 30A rating aligns with common small-to-medium motor loads, delivering protective isolation without unnecessary nuisance tripping in demanding manufacturing environments. Enclosed in a NEMA 3R housing, the unit provides weather-resistant protection for indoor installations and protected outdoor locations, helping minimize exposure to dust and incidental moisture while maintaining safe access to disconnect points. The fusible with neutral configuration ensures a proper neutral path for circuits requiring a return conductor, enabling safer switching and easier integration with existing panels and feeders. UL Listed certification and NEC barrier compliance support regulatory alignment and risk reduction in audits, while the rugged construction supports long service life, reduced maintenance costs, and lower total cost of ownership. The compact footprint—10.77 in depth, 16.12 in height, and 8.87 in width—facilitates straightforward mounting in standard electrical enclosures and panel assemblies, improving installation efficiency and inventory management. This combination of safety, reliability, and ease of installation makes the DH321NRK2 suitable for industrial electrical protection, panel safety, and motor control applications across manufacturing, processing, and distribution environments.
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FAQs
The DH321NRK2 is a three-pole, 30A, 240V fusible safety switch with a neutral. For installation, mount in a suitably rated enclosure, connect the three hot leads and the neutral to the appropriate terminals, and ensure NEC 230.62 compliant barrier is maintained. Use UL Listed components and observe proper torque specs to prevent overheating and ensure safe disconnection during maintenance.
Key specifications include a 30A amperage rating, three poles, 240V operating voltage, and a fusible with neutral configuration. It comes in a NEMA 3R enclosure and is UL Listed. The device is designed for reliable isolation in industrial electrical protection scenarios, with NEC barrier compliance supporting safe personnel access and maintenance.
Yes. The DH321NRK2 features a NEMA 3R enclosure, which provides weather resistance suitable for indoor use and protected outdoor locations. For best results, install in a sheltered area and follow enclosure integrity guidelines to maintain barrier protection and prolong switch life in challenging environments.
This switch carries UL Listed certification, ensuring compliance with rigorous safety testing. NEC barrier compliance helps maintain safe separation between live parts and personnel, while the NEMA 3R rating provides rugged enclosure protection against environmental contaminants. Together, these standards support regulatory acceptance, reduced audit risk, and safer, more reliable operation in industrial facilities.
The rugged construction and UL/NEC-compliant design reduce replacement frequency and downtime. A fusible-with-neutral configuration simplifies fuse replacement and circuit restoration, while the three-pole arrangement ensures consistent, predictable power shutdowns. Overall, you gain lower maintenance costs, improved uptime, and quicker, safer service interruptions for better return on investment.