Eaton DG321NRB General Duty Fuse Safety Switch - UL Listed
Part Number: DG321NRB
Quick Summary
The Eaton DG321NRB general duty cartridge fuse safety switch provides safe isolation for 240 V power circuits in light industrial and commercial control panels. This design helps prevent arc flash and accidental energization during maintenance, reducing risk and downtime. UL Listed with a NEMA 3R enclosure, NEC 230.62 compliant barrier, and painted galvanized steel construction, it combines reliability with rugged outdoor capability. The unit supports Class H fuses and neutral-fusible configurations, delivering robust protection while simplifying wiring and fuse replacement. Ideal for panel builders and maintenance teams seeking compliant, durable protection with straightforward installation and serviceability.
Product Information
Extended Description
DG321NRB Eaton: Eaton General duty cartridge fuse safety switch, NEMA 3R, Painted galvanized steel, Class H fuses, 30 A, Fusible with neutral, Three-pole, Four-wire, Category: general duty safety switch, 240 V
Product Name
Eaton general duty cartridge fuse safety switch
Catalog Number
DG321NRB
UPC
782113120348
Product Length/Depth
6.88 in
Product Height
10.81 in
Product Width
6.38 in
Product Weight
6 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
Catalog Notes
Maximum hp ratings apply only when dual element fuses are used
Enclosure
NEMA 3R
Enclosure material
Painted galvanized steel
Fuse configuration
Fusible with neutral
Number Of Poles
Three-pole
Number of wires
4
Type
General duty, cartridge fused
Amperage Rating
30A
Fuse class provision
Class H fuses
Voltage rating
240V
Product Category
General duty safety switch
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Double Up on Safety
Double Up on Safety
Eaton Specification Sheet - DG321NRB
Feature → Business Impact → Application: The three-pole, four-wire configuration provides secure three-phase control with neutral for balanced loads, improving protection accuracy and simplifying wiring in motors and control circuits. This translates to reduced nuisance trips and safer startup sequences in machine panels and utility distributions. Feature → Business Impact → Application: 240 V operation with a 30 A amperage rating enables compact, cost-efficient protection for small to mid-size drives, conveyors, and lighting panels in general duty safety applications. Feature → Business Impact → Application: Fusible with neutral design supports selective coordination and easy fuse replacement without compromising safety in compact control enclosures. Feature → Business Impact → Application: NEMA 3R painted galvanized steel enclosure offers outdoor durability and rain resistance, enabling installation in semi-exposed environments such as warehouses, workshops, and outdoor equipment enclosures. Feature → Business Impact → Application: UL Listed and NEC 230.62 compliant barrier provide regulatory assurance and reduced engineering scrutiny during approvals and audits. Feature → Business Impact → Application: Dual-element fuse compatibility and the catalog note that maximum horsepower ratings apply only when dual element fuses are used, guiding design choices for motor-driven loads and preventing overrating. Feature → Business Impact → Application: Compatibility with standard Class H fuses supports easy procurement and replacement, lowering spares inventory and maintenance costs while ensuring consistent protection across fleets of smaller machines. Feature → Business Impact → Application: The compact footprint (6.88 in depth, 10.81 in height, 6.38 in width) fits standard control cabinets, improving retrofit feasibility and reducing enclosure redesign time for end users and integrators.
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FAQs
DG321NRB is a three-pole, four-wire switch configured as fusible with neutral, supporting Class H fuses. For installation, ensure a 240V supply, proper neutral connection, and compliance with NEC 230.62 barrier. Dual-element fuse compatibility should be verified per catalog notes to ensure hp ratings align with motor loads and prevent undersizing or oversizing.
Key specs include a 30A amperage rating, 240V voltage rating, NEMA 3R enclosure, painted galvanized steel housing, and UL Listed certification. It features three poles, four wires, and a fuse configuration that is fusible with neutral, suitable for general duty safety switch applications in light industrial panels.
This general duty safety switch is ideal for light industrial power distribution and control panels, motor control centers, conveyors, and lighting panels. Its 240V/30A rating, three-pole design, and fusible-with-neutral configuration support safe, code-compliant isolation and protection for small to mid-size equipment in commercial facilities.
DG321NRB carries UL Listed certification and NEC 230.62 barrier compliance, with a NEMA 3R enclosure for rugged, weather-resistant installations. These certifications help streamline approvals, meet safety standards, and ensure reliable protection for outdoor or semi-exposed control installations.
The unit ships with a one-year warranty from installation or eighteen months from shipment, whichever occurs first, reducing risk in commissioning. Its compatibility with readily available Class H fuses lowers spare parts costs, while the integrated isolation and protection features reduce downtime and simplify routine maintenance in panel-driven industries.