Eaton DH321FRKA1240 Auxiliary Power Switch - UL Listed
Part Number: DH321FRKA1240
Quick Summary
Eaton auxiliary power switch is a compact, reliable solution for controlling auxiliary circuits in heavy-duty electrical panels. Maintaining dependable control of safety-critical circuits in harsh environments is a frequent challenge for panel builders and maintenance teams. This model carries UL Listed certification and a NEMA 3R enclosure rating, reflecting robust safety and outdoor durability. In addition to primary protection, it supports reliable auxiliary power with a compact footprint that integrates smoothly with existing control systems. This makes it a practical choice for modernization projects and new installations where safety and continuity matter. Engineers appreciate the straightforward installation and clear ratings when planning panel upgrades.
Product Information
Extended Description
DH321FRKA1240 Eaton: Heavy Duty Safety Switch, Single-Throw, 30A, 240V, Three-pole, Three-wire, Fusible without neutral, NEMA 3R, 240 V auxiliary circuit, Painted galvanized steel, Class H fuses, 15A GFI receptacle
Product Name
Eaton auxiliary power switch
Catalog Number
DH321FRKA1240
UPC
782116418190
Product Length/Depth
9.89 in
Product Height
16.27 in
Product Width
7.75 in
Product Weight
0.01 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
Amperage Rating
30A
HP rating - max
1.5 at 240 Vac Std. 1 Ph, 3 at 240 Vac Std. 3 Ph, 7.5 at 240 Vac TD 3 Ph
Voltage rating
240V
Enclosure
NEMA 3R
Enclosure material
Painted galvanized steel
Fuse class provision
Class H fuses
Fuse configuration
Fusible without neutral
Number Of Poles
Three-pole
Number of wires
3
Type
Single-Throw
Product Category
Heavy Duty, Fusible without neutral
Special features
15A GFI receptacle
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Specification Sheet - DH321FRKA1240
The DH321FRKA1240 features a 30A, 240V rating in a three-pole, fusible without neutral configuration, housed in a NEMA 3R enclosure. This configuration delivers reliable overload protection while maintaining a compact footprint that minimizes panel size and wiring complexity. Ideal for heavy-duty control panels, outdoor equipment, and control circuits that require robust, code-compliant power control. Class H fuses in a fusible switch setup provide coordinated protection with upstream devices and simplify inventory management. Faster fault isolation reduces downtime, while standardized fuse classes lower maintenance costs and improve compliance with electrical protection practices. Suitable for retrofits and new installations in manufacturing lines, processing plants, and outdoor systems. Painted galvanized steel construction and the NEMA 3R enclosure rating deliver rugged weather resistance. Durability under harsh conditions minimizes corrosion-related failures and extends service life in outdoor or damp environments. Outdoor switchgear housings, wash-down areas, and wet-dust susceptible installations. UL Listed certification confirms safety compliance for electrical protection devices. Business Impact: Eases procurement and enables faster approval processes in controlled environments. Application: Used where code compliance and inspector acceptance matter most. Built-in 15A GFI receptacle adds field utility for testing or powering small loads without exposing the main circuit. Business Impact: Improves troubleshooting efficiency and reduces the need for separate outlets in the work area. Application: Maintenance testing, calibration tasks, and small equipment checks in industrial settings. Wiring and installation compatibility: Three wires, three poles, and a straightforward form factor streamline installation and replacements. Business Impact: Faster commissioning, lower labor costs, and reduced risk of miswiring or mis-specification. Application: New builds and modernization projects across manufacturing and process industries. Warranty and service: Eaton policy 25-000 provides a one-year warranty from installation or 18 months from shipment, whichever comes first. Application: Gives project teams confidence during commissioning and long-term operation.
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FAQs
The DH321FRKA1240 is a three-pole, fusible without neutral device rated at 30A and 240V, designed for three-wire installations inside a NEMA 3R enclosure. Plan for a compact footprint, ensure proper heat dissipation, and route auxiliary circuits with attention to separation from main power to maintain control reliability and safety.
This switch provides 30A at 240V with a fusible configuration using Class H fuses. The combination supports coordinated protection with upstream devices, reduces nuisance trips, and simplifies fuse replacement. Its UL Listed status confirms compliance with electrical safety standards for protection and control equipment.
Yes. It uses a NEMA 3R enclosure with painted galvanized steel, offering weather resistance and corrosion protection suitable for outdoor or damp indoor locations. This makes it well-suited for outdoor panels, equipment enclosures, and plant floor installations exposed to environmental conditions.
The DH321FRKA1240 carries UL Listed certification, which validates safety compliance for electrical protection devices. This certification streamlines procurement, supports inspector acceptance, and helps meet industry and electrical code requirements in many regions.
Eaton provides a warranty per policy 25-000: one year from installation or eighteen months from shipment, whichever occurs first. This warranty supports commissioning confidence, reduces risk during startup, and contributes to total cost of ownership by lowering maintenance surprises.