Eaton DH325NPK Heavy Duty Fusible Safety Switch - NEMA 4
Part Number: DH325NPK
Quick Summary
Eaton DH325NPK fusible safety switch provides reliable motor circuit protection for industrial equipment and panels. Operators and technicians often struggle with protection devices that are hard to maintain, access, or integrate with large conductors. UL Listed and NEMA 4 enclosures ensure safe operation in dusty, wet, or outdoor environments, while the Class H fuse provision supports fast, reliable protection. This model delivers a robust 400 A rating with a three-pole, four-wire configuration for straightforward integration into existing low-voltage systems, helping to reduce downtime and total cost of ownership.
Product Information
Extended Description
DH325NPK Eaton: Eaton Enhanced visible blade single-throw safety switch, 400 A, NEMA 4, Painted steel, Class H, 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
DH325NPK
UPC
782114371206
Product Length/Depth
11.2 in
Product Height
57.47 in
Product Width
22.66 in
Product Weight
135 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
Enclosure
NEMA 4
Enclosure material
Painted 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 4
Voltage rating
240V
Product Category
Heavy Duty, Fusible with neutral
Feature: Three-pole, four-wire design with 240 V operation; Business Impact: Centralized protection for three-phase motors reduces wiring complexity and improves fault isolation; Application: Suitable for manufacturing lines, conveyors, and pump stations. Feature: Class H fuse provision with neutral; Business Impact: Fast, selective protection that minimizes nuisance trips and short-circuit damage. Application: Ideal for high-demand motor circuits in harsh environments. Feature: NEMA 4 painted steel enclosure; Business Impact: Weather, dust, and washdown resistance lowers maintenance costs. Application: Outdoor or washdown areas. Feature: UL Listed; Business Impact: regulatory compliance and ease of OEM integration. Application: Industrial control panels and retrofit projects. Feature: Large conductor compatibility up to (2)#1/0-(2)300 kcmil or (1)#1/0-(1)750 kcmil Cu/Al; Business Impact: Supports high-current feeders and future capacity upgrades without panel changes. Application: Heavy-duty installations and utility-scale equipment. HP rating: 50 hp (std) / 125/50 hp (TD/250 Vdc); Business Impact: Clear performance envelope for line/start-up scenarios. Application: Conveyor drives, pumps, and compressors in energy-intensive processes.
Get a Quick Quote for a Eaton DH325NPK
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 DH325NPK?
Enquire Now
FAQs
Wire three hot lines to L1-L3, connect neutral to the neutral terminal, and attach equipment ground to the enclosure ground. Verify the Class H fuse configuration and torque all terminations per Eaton's datasheet to ensure proper protection and compliance with NEC/UL requirements.
The DH325NPK is rated for 400 A with a maximum HP of 50, and 125/50 HP for 3-phase at TD/250 Vdc. This supports standard and high-performance motor protection across many industrial applications.
Yes. The enclosure is NEMA 4 rated and UL Listed, built from painted steel to withstand dust, water exposure, and washdowns typical in outdoor installations and harsh plant floors.
It is UL Listed for safety compliance. The warranty follows Eaton policy 25-000, offering one year from installation or 18 months from shipment, whichever occurs first, ensuring coverage during early field use.
Low maintenance needs arise from a rugged NEMA 4 enclosure and robust Class H protection. Fewer nuisance trips and straightforward fuse replacement reduce downtime, contributing to a lower total cost of ownership over the product life cycle.