Eaton DH321NRK-CSA Auxiliary Power Switch - UL Listed
Part Number: DH321NRK-CSA
Quick Summary
Eaton auxiliary power switch provides reliable 30 A protection for three-phase industrial equipment in control panels. Too often, engineers face space constraints, weather exposure, and downtime when selecting a switch for critical equipment. This unit is UL Listed and CSA Certified, with a NEMA 3R enclosure that protects against moisture and corrosion in demanding environments. Designed for heavy-duty control, it integrates smoothly with 240 V circuits and four-wire configurations, delivering dependable safety and easier procurement for OEMs and system integrators.
Product Information
Extended Description
DH321NRK-CSA Eaton: Eaton auxiliary power switch, 30 A, NEMA 3R, Painted galvanized steel, Class H, Fusible with neutral, Three-pole, Four-wire, 240 V, #14-#2 Cu/Al
Product Name
Eaton auxiliary power switch
Catalog Number
DH321NRK-CSA
UPC
786685223070
Product Length/Depth
16.8 in
Product Height
15.88 in
Product Width
9.5 in
Product Weight
20 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 CSA Certified
Amperage Rating
30A
HP rating - max
1.5 at 240 Vac Std. 1 Ph, 3 at 240 Vac Std. 3 Ph, 3 at 240 Vac TD 1 Ph, 7.5 at 240 Vac TD 3 Ph, 5 at 250 Vdc
Voltage rating
240V
Enclosure
NEMA 3R
Enclosure material
Painted galvanized 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
Product Category
Heavy Duty, Fusible with neutral
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Specification Sheet - DH321NRK-CSA
Feature: 30 A amperage rating with 240 V operation provides robust power control for standard industrial loads. Business impact: Enables reliable switching of three-phase equipment while meeting common code requirements. Application: Suitable for panel builders and machine OEMs needing dependable protection in control panels. Feature: NEMA 3R enclosure in painted galvanized steel offers weather resistance. Business impact: Reduces downtime and maintenance in outdoor or damp locations. Application: Outdoor feeders and indoor wash-down areas where moisture exposure is possible. Feature: Class H fuse provision with fusible neutral configuration enhances safety and fault isolation. Business impact: Simplifies fuse replacement and improves protection coordination. Application: Safety-critical power circuits in manufacturing lines. Feature: Three-pole, four-wire design and wire size compatibility (#14-2 Cu/Al) streamline installation. Business impact: Faster wiring, standardized terminations, and universal compatibility with common conductors. Application: Control panels and switchgear assemblies. Feature: UL Listed and CSA Certified with a 1-year (or 18-month from shipment) warranty. Business impact: Provides regulatory assurance and reduced long-term maintenance costs. Application: Compliance-driven projects and equipment upgrades in industrial plants. Feature: Physical dimensions and weight (16.8 in L x 15.88 in H x 9.5 in W; 20 lb) support space planning and mounting logistics. Business impact: Predictable footprint simplifies enclosure design and inventory planning. Application: Retrofit projects and new builds in tight electrical rooms.
Get a Quick Quote for a Eaton DH321NRK-CSA
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton DH321NRK-CSA?
Enquire Now
FAQs
For proper installation, verify panel space and mounting suitability for a NEMA 3R enclosure. Mount securely, connect four wires (three hot lines and a neutral) using #14-2 Cu/Al conductors, and ensure grounding is intact. Confirm fuse compatibility with Class H fuses and adhere to local electrical codes. Use the UL Listed/CSA Certified rating as a guide for installation practices and safety.
Key specs include a 30 A amperage rating, 240 V voltage rating, and HP ratings of up to 7.5 HP at 240 V for three-phase configurations. It features a NEMA 3R enclosure, painted galvanized steel construction, a fusible with neutral configuration, and a three-pole, four-wire design. This combination supports reliable control of typical industrial loads within standard control circuits.
Yes. The NEMA 3R enclosure combined with painted galvanized steel provides weather resistance suitable for outdoor and harsh indoor environments. This makes it a viable choice for outdoor panels, equipment rooms with higher humidity, or installations exposed to dust and incidental moisture while maintaining safety and performance.
The DH321NRK-CSA is UL Listed and CSA Certified, which document third-party safety and compliance with recognized standards. These certifications help ensure regulatory alignment for industrial installations, simplify approvals with customers and inspectors, and support safer procurement decisions within quality-managed maintenance programs.
The heavy-duty construction and fusible with neutral configuration reduce downtime and maintenance frequency by providing reliable fault isolation and long service life. The unit’s warranty (one year from installation or 18 months from shipment) offers assurance, while its compatibility with common Cu/Al wiring and standard fuse classes lowers replacement and stocking costs for maintenance teams.