Eaton DD365FDKW-00LO Fused Safety Switch - NEMA 12/3R
Part Number: DD365FDKW-00LO
Quick Summary
Eaton DD365FDKW-00LO fused safety switch isolates 3-phase power in demanding industrial applications. Downtime and unsafe lockout processes cost productivity; this switch provides rapid, reliable isolation and a clear lockout pathway. UL Listed certification and a rugged NEMA 12/3R enclosure ensure safe operation in dusty environments, meeting essential safety standards. This model also supports Class H fuses and a 600 V rating, making it a robust choice for high-demand panels. For control panels, machine guarding, and main distribution, it delivers practical safety with installation flexibility and long-term reliability. By supporting 3-pole, 3-wire configurations, it aligns with typical plant electrical architectures, reducing wiring complexity. Its reinforced paint finish and galvanized steel enclosure resist harsh environments, lowering maintenance costs over time.
Product Information
Extended Description
DD365FDKW-00LO Eaton: Eaton Double door single-throw fused safety switch, 400 A, NEMA 12/3R, Painted galvanized steel, Class H, Fusible without neutral, 3P, Three-wire, 600 V, Max Hp: 250, 350 hp (1/3PH @480, 600 V).
Product Name
Eaton double door single-throw fused safety switch
Catalog Number
DD365FDKW-00LO
UPC
786689211905
Product Length/Depth
72.46 in
Product Height
16.41 in
Product Width
24.32 in
Product Weight
219 lb
Certifications
UL Listed
Catalog Notes
Double Door Isolation Switch
Enclosure
NEMA 12, NEMA 3R
Enclosure material
Painted galvanized steel
Fuse configuration
Fusible without neutral
Number Of Poles
Three-pole
Number of wires
3
Type
Heavy duty double door safety switch
Amperage Rating
400A
Fuse class provision
Class H
HP rating - max
250, 350 hp (3PH @480, 600 V)
NEMA rating
NEMA 12
Voltage rating
600 V
Product Category
Dust tight
Special features
w/ window, Lock-On Provision
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
Eaton Specification Sheet - DD365FDKW-00LO
Feature: 400 A amperage rating with three-pole, fusible without neutral configuration. Business Impact: Handles high load demand while enabling straightforward fault isolation, reducing nuisance fuse replacements and improving downtime metrics. Application: Motor control centers and large machine lines where reliable isolation is critical. Feature: NEMA 12 and NEMA 3R enclosure with painted galvanized steel housing. Business Impact: Provides dust-tight and weather-resistant protection for indoor and outdoor installations, lowering inspection and maintenance costs. Application: Plant floors, outdoor equipment enclosures, and harsh manufacturing environments. Feature: Class H fuse provision and 600 V rating. Business Impact: Supports high interrupting capacity and safe operation with standard motor starting loads, delivering longer service life and reduced maintenance cost. Application: Heavy-duty automation panels and process lines. Feature: Window and Lock-On Provision as standard features. Business Impact: Improves operational visibility before maintenance and enforces compliance with lockout/tagout procedures, enhancing personnel safety. Application: Routine maintenance, panel servicing, and energy distribution tasks. Feature: Three-wire, three-pole configuration. Business Impact: Simplifies wiring schemes and reduces installation time, accelerating project schedules. Application: Line-side power distribution in control panels and switchgear assemblies. Feature: UL Listed certification and robust construction. Business Impact: Delivers industry-recognized safety compliance, facilitating audits and regulatory acceptance. Application: Industrial facilities requiring verified safety equipment with durable, long-term performance.
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FAQs
The DD365FDKW-00LO is designed for 3‑phase, 600 V systems in industrial control panels and main distribution applications. It features a three-pole, three-wire configuration and a NEMA 12/3R enclosure, making it suitable for dusty indoor environments and certain outdoor installations when protected from direct exposure. This compatibility supports reliable isolation in machinery, packaging lines, and process equipment while simplifying wiring and panel layout.
Key specs include a 400 A amperage rating, three-pole configuration, fusible without neutral, Class H fuse provision, and a 600 V voltage rating. It is UL Listed, ensuring safety compliance, and is designed to handle motor starting and fault isolation in demanding industrial environments. For installation planning, verify panel space, wiring gauge, and fuse compatibility with the controlled loads.
Yes, the DD365FDKW-00LO uses a NEMA 12, NEMA 3R enclosure and a painted galvanized steel body, which provides dust-tight protection and environmental resistance suitable for indoor and certain outdoor settings with appropriate protection. For outdoor exposure, ensure the installation location meets enclosure protection requirements and weather considerations to maintain performance and safety.
The device is UL Listed, signaling compliance with recognized safety standards for electrical equipment. Its enclosure ratings (NEMA 12/3R) reflect industry guidelines for dust and moisture protection, while its Class H fusing and 600 V rating align with common industrial performance requirements. These attributes support regulatory acceptance and safer operation in industrial facilities.
The DD365FDKW-00LO offers clear visibility with a window and a lock-out provision, facilitating safer maintenance procedures and faster servicing. Its robust construction and high current capacity reduce unplanned downtime by providing reliable isolation for motors and feeders. Over time, this translates to lower maintenance costs, reduced risk of electrical faults, and a measurable return on investment through improved uptime.