Eaton DH327NRK Heavy Duty Fusible Safety Switch - NEMA 3R
Part Number: DH327NRK
Quick Summary
Eaton DH327NRK heavy duty fusible safety switch protects motor circuits in industrial installations. Maintenance, downtime, and arc-flash risk are ongoing challenges; this switch delivers rugged enclosure integrity and reliable isolation. UL Listed, NEC 230.62 barrier-compliant, and a NEMA 3R painted galvanized steel enclosure provide certified protection across indoor and outdoor environments. Designed for 240 V systems and up to 100 hp, it supports scalable protection strategies while aligning with standard low-voltage safety practices. This model uses a Class L fuse provision and fusible with neutral to enable precise protection for the three-pole four-wire configuration. These features reduce unplanned outages and simplify maintenance for OEMs and service teams, delivering safer operation and lower lifecycle costs.
Product Information
Extended Description
DH327NRK Eaton: Eaton Heavy duty single-throw fused safety switch, 800 A, NEMA 3R, Painted galvanized steel, Class L, Fusible with neutral, Three-pole, Four-wire, 240 V, Max Hp: 100 hp (3PH @Std), (4)#1/0-(4)750 kcmil Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH327NRK
UPC
782113639253
Product Length/Depth
57.5 in
Product Height
12.38 in
Product Width
27.5 in
Product Weight
177 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 3R
Enclosure material
Painted galvanized steel
Fuse class provision
Class L
Fuse configuration
Fusible with neutral
Number Of Poles
Three-pole
Number of wires
4
Type
Heavy duty fusible safety switch
Amperage Rating
800A
HP rating - max
100 hp (3PH @Std)
NEMA rating
NEMA 3R
Voltage rating
240V
Product Category
Heavy Duty, Fusible with neutral
Feature: 800 A amperage rating and 240 V operation in a three-pole, four-wire configuration. Business Impact: Supports large motor loads up to 100 hp with reliable disconnect, reducing panel congestion and enabling safer shutdown. Application: Pumps, conveyors, and fans in industrial facilities. Feature: Fusible with neutral and Class L fuse provision. Business Impact: Predictable tripping and enhanced fault isolation, lowering downtime and maintenance costs. Application: Motor protection during startup and fault events. Feature: NEMA 3R enclosure with painted galvanized steel. Business Impact: Weather-resistant protection suitable for outdoor or harsh indoor environments, extending service life. Application: Outdoor motor control and harsh plants. Feature: UL Listed and NEC 230.62 barrier compliant. Business Impact: Regulatory compliance and arc-flash risk mitigation, simplifying safety audits. Application: Any facility requiring certified protection and safe maintenance. Feature: Large cabinet footprint with 57.5 in length, 27.5 in width, and 12.38 in height; weight 177 lb. Business Impact: Robust build supports secure mounting and long-term durability, reducing vibration-related wear. Application: Industrial installations with space and load considerations. Feature: 4-wire capability and three-pole configuration. Business Impact: Flexible integration with existing switchgear and motor control arrangements. Application: Systems designed for neutral-grounded circuits and expanded wiring layouts. Warranty and support: Includes Eaton policy 25-000 with one year from installation or eighteen months from shipment. Application: Provides post-sale assurance and maintenance planning for capital equipment.
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FAQs
The DH327NRK is a three-pole, four-wire fusible safety switch rated for 800 A at 240 V, designed to retrofit with compatible motor control centers and feeder panels. Its neutral-fusible configuration simplifies wiring with existing neutral lines, while the NEMA 3R enclosure allows indoor or outdoor mounting. When planning installation, verify enclosure dimensions (57.5 in L, 27.5 in W, 12.38 in H) and ensure adequate mounting clearance for safe handling during fuse replacement.
Key specs include an 800 A amperage rating, 240 V voltage rating, and a max of 100 hp for three-phase motors. It features a fusible with neutral configuration and Class L fuse provision, with a three-pole, four-wire arrangement. The enclosure is NEMA 3R and painted galvanized steel, UL Listed, ensuring compliance and reliable protection in diverse environments.
Yes. The DH327NRK uses a NEMA 3R enclosure crafted from painted galvanized steel, designed for indoor and outdoor use. Its heavy-duty construction and UL Listed certification support reliable protection for motors such as pumps and conveyors in environments with exposure to weather, dust, and partial moisture, while maintaining safe isolation during maintenance.
The DH327NRK is UL Listed and NEC 230.62 barrier compliant, reflecting adherence to recognized safety standards and arc-flash mitigation requirements. Its NEMA 3R enclosure further certifies suitability for outdoor or harsh indoor environments. Compliance and certification support streamlined safety audits, installation approvals, and regulatory alignment across facilities.
The DH327NRK provides robust, long-term protection for high-current motor loads, reducing unplanned downtime through predictable fuse operation and reliable isolation. Field-replaceable Class L fuses and a durable galvanized enclosure lower maintenance costs, while UL Listed and NEC barrier conformity simplify compliance tasks. Overall, customers can expect improved equipment life, safer operation, and faster service turnaround times in exchange for upfront capital investment.