Eaton DH325FRK Heavy Duty Fusible Safety Switch - NEMA 3R
Part Number: DH325FRK
Quick Summary
Eaton DH325FRK heavy-duty fusible safety switch is designed for reliable isolation in industrial power distribution and service entrances. In many facilities, downtime and arc-flash risk spike when switching high-current gear with generic devices, making purpose-built switches essential. UL Listed with a NEMA 3R enclosure and Class H fuse provision, it also supports service entrance installations with a Neutral Kit. This combination delivers robust protection, safer operation, and straightforward maintenance, helping owners reduce downtime and extend motor and feeder life while meeting common electrical codes. Ideal for manufacturing, processing, and distribution environments, it pairs rugged performance with installation flexibility and long-term cost savings.
Product Information
Extended Description
DH325FRK Eaton: Eaton Enhanced visible blade single-throw safety switch, 400 A, NEMA 3R, Painted galvanized steel, Class H, Three-pole, Three-wire, 240 V, Max Hp: 50, 125/ 50 hp (3PH @Std, TD/250 Vdc), (2)#1/0-(2)300 kcmil or (1)#1/0-(1)750 kcmil Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH325FRK
UPC
782113207056
Product Length/Depth
7.27 in
Product Height
44.74 in
Product Width
23.08 in
Product Weight
120 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
Catalog Notes
Suitable for service entrance use with a Neutral Kit installed
Enclosure
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
Amperage Rating
400A
HP rating - max
50, 125/ 50 hp (3PH @Std, TD/250 Vdc)
NEMA rating
NEMA 3R
Voltage rating
240V
Product Category
Heavy Duty, Fusible without neutral
The 400A amperage rating provides headroom for demanding motor loads, reducing voltage drop and panel heat in feeders and main disconnects. This translates to improved reliability during peak starting currents and longer equipment life in continuous-duty service. Three-pole, three-wire configuration at 240V ensures balanced phase distribution and simplified wiring, accelerating commissioning and reducing mis-wiring risk in complex switchgear. The NEMA 3R enclosure and painted galvanized steel construction offer outdoor durability and weather resistance, minimizing corrosion-related maintenance and extending enclosure life in exposed installations. Class H fuse provision delivers fast-acting, high-current protection, with fusible without neutral configuration simplifying retrofits where neutral is not required. UL listing and Neutral Kit compatibility provide regulatory confidence and installation versatility for service entrances and control panels. The DH325FRK also supports standard Eaton catalogs and service documentation, enabling easier procurement, spare-parts planning, and predictable lifecycle costs for large facilities.
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FAQs
DH325FRK is a 400A three-pole 240V safety switch with a NEMA 3R enclosure, designed for service entrances. It offers a Neutral Kit option and a weight of 120 lb, with dimensions of 7.27 in depth, 44.74 in height, and 23.08 in width. Ensure proper mounting space, clearances, and compatible wiring methods, then verify UL Listed compliance during commissioning.
Key specs include 400A amperage rating, 240V voltage rating, three-pole, three-wire configuration, and Class H fuse provision. Maximum motor HP is 50 HP (3PH @Std) or 125/50 HP for alternate configurations, with 240V operation and NEMA 3R enclosure. The device is rated for service entrance use with a Neutral Kit and UL Listed for safety and compliance.
Yes. The DH325FRK features a NEMA 3R enclosure, constructed from painted galvanized steel, making it suitable for outdoor and semi-outdoor use. Its rugged build supports harsh environments, while the Neutral Kit option provides installation flexibility. Planning should include weather considerations, space for servicing, and secure mounting to maintain reliability in exposed locations.
The DH325FRK is UL Listed, ensuring conformity with recognized safety standards. It is suitable for service entrance applications when a Neutral Kit is installed, and it supports standard industrial wiring practices. This certification framework helps reduce compliance risk in regulated facilities and facilitates easier acceptance by electrical inspectors.
Investing in the DH325FRK yields ROI through improved uptime and safer isolation of high-current circuits. Its rugged 120 lb enclosure and Class H fuse design lower maintenance frequency by reducing nuisance trips. Warranty terms include one year from installation or 18 months from shipment, supporting predictable service costs and quick parts replacement if needed.