Eaton DH325NDK Heavy Duty Fusible Safety Switch - UL
Part Number: DH325NDK
Quick Summary
Eaton DH325NDK is a heavy-duty fusible safety switch protecting 3-phase distribution systems at 240 V up to 400 A. This solution helps prevent costly downtime by delivering reliable isolation and fuse protection for demanding manufacturing environments. UL Listed, NEC 230.62 barrier compliant, and a NEMA 12/3R enclosure provide essential safety and rugged durability in industrial settings. Designed for ease of installation and long-term cost efficiency, it supports standard motor ratings and neutral wiring, delivering dependable protection for critical equipment while simplifying maintenance and compliance processes.
Product Information
Extended Description
DH325NDK Eaton: Eaton Heavy duty single-throw fused safety switch, 400 A, NEMA 12/3R, Painted galvanized steel, Neutral, Three-pole, Four-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 Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH325NDK
UPC
782113207162
Product Length/Depth
11.2 in
Product Height
57.47 in
Product Width
22.66 in
Product Weight
125 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
Enclosure
NEMA 12, 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
Amperage Rating
400A
HP rating - max
50, 125/ 50 hp (3PH @Std, TD/250 Vdc)
NEMA rating
NEMA 12/3R
Voltage rating
240V
Product Category
Heavy Duty, Fusible with neutral
Feature: 400 A amperage rating enables large feeders to be protected with a single switch. Business Impact: Reduces the need for multiple devices and minimizes fuse-related downtime, lowering installation and maintenance costs. Application: Main feeder protection for motors and process lines in mid-to-large industrial facilities. Feature: NEMA 12, NEMA 3R enclosure with painted galvanized steel provides robust enclosure protection. Business Impact: Improved resistance to dust, moisture, and corrosion, extending service life in harsh environments. Application: Indoor plant floors and outdoor-rated installations where weather exposure is a concern. Feature: Fusible with neutral, 4-wire configuration, and Class H fuse provision. Business Impact: Safer neutral management and controlled fault isolation, reducing arc flash risk and simplifying electrical design. Application: Panel boards and distribution enclosures with neutral currents. Feature: Three-pole design with four wires and 240 V rating. Business Impact: Clear, reliable phase separation and ease of wiring for standard 3P systems, accelerating commissioning. Application: Typical 3-phase motor circuits and process equipment. Feature: HP rating up to 50, with 125/50 hp (3PH Std, TD/250 Vdc). Business Impact: Supports a wide range of motor loads, enabling scalable drive protection and future upgrades. Application: Conveyor systems and pump stations requiring higher horsepower protection. Feature: UL Listed and NEC 230.62 barrier compliant. Business Impact: Ensures regulatory alignment and worker safety, reducing compliance risk and inspection time. Application: Any regulated facility targeting certified protection equipment. Feature: Dimensions and weight (11.2 in D, 57.47 in H, 22.66 in W, 125 lb). Business Impact: Predictable footprint for panel design and retrofit planning, minimizing site surprises. Application: Cabinet integrations and retrofit projects in existing plants.
Get a Quick Quote for a Eaton DH325NDK
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 DH325NDK?
Enquire Now
FAQs
The DH325NDK is designed for 3-phase, 240V systems with a neutral (4-wire). It uses a three-pole configuration and accommodates Cu/Al conductors up to the specified sizes (as listed in the datasheet). Plan for a NEMA 12/3R enclosure installation, proper clearance, and barrier requirements per NEC 230.62. Follow Eaton installation guidelines for safe, compliant retrofits or new installations.
Key specs include a 400A amperage rating, 240V operating voltage, three-pole configuration with neutral (4 wires), Class H fuse provision, and a maximum motor HP rating of 50 hp standard with 125/50 hp at TD/250 Vdc. It supports large feeders and provides reliable isolation for 3-phase systems, with a NEMA 12/3R enclosure for rugged protection.
Yes. The enclosure is rated for NEMA 12 and NEMA 3R, offering protection against dust, moisture, and weather exposure when installed in appropriate locations. The painted galvanized steel construction further enhances durability. For outdoor or damp environments, the 3R rating provides added weather resistance, while indoor use is well-supported by the 12 rating for dust and splash protection.
The DH325NDK is UL Listed and features NEC 230.62 barrier compliance, supporting safe, compliant operation in regulated facilities. Its NEMA 12/3R enclosure aligns with common industrial protection standards, and the design is suitable for installations that require certified protection equipment and safe neutral handling in multi-wire systems.
The product carries Eaton's warranty policy: one year from installation or eighteen months from shipment, whichever comes first. For maintenance, replace fuses as needed and inspect the barrier integrity periodically. Rely on Eaton’s spare parts and datasheets for recommended replacement intervals and safety checks, ensuring continuous, compliant protection for critical circuits.