Eaton 12HD421 Heavy Duty Fusible Safety Switch - UL Listed
Part Number: 12HD421
Quick Summary
The Eaton 12HD421 heavy duty fusible safety switch is designed to provide safe isolation in industrial power distribution and control panels. It helps maintenance teams prevent unexpected arc flash and electrical faults by offering a robust, lockable disconnect option. This unit supports quick service, reliable fault isolation, and durable operation in demanding environments. It is UL Listed and NEC 230.62 barrier compliant, aligning with essential safety standards and corporate risk controls. For engineers and procurement teams, the 12HD421 delivers predictable performance in industrial protection and circuit control applications, enabling compliant installation, easier maintenance scheduling, and lower total cost of ownership through increased uptime and reduced nuisance trips.
Product Information
Extended Description
12HD421 Eaton: COMMANDER SAFETY SWITCH V16
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
12HD421
Product Length/Depth
25.5 in
Product Height
9 in
Product Width
13.25 in
Product Weight
15 lb
Compliances
NEC 230.62 (C) Compliant Barrier
Certifications
UL Listed
Feature: Compact dimensions and weight with a footprint of 25.5 in length, 13.25 in width, 9 in height and a 15 lb weight. Business Impact: Easier enclosure integration, simplified mounting, and reduced space requirements in crowded switchgear areas. Application: Ideal for retrofit projects and new panel builds where space is at a premium. Feature: Compliances and certifications include NEC 230.62 barrier and UL Listed. Business Impact: Strong regulatory alignment and enhanced safety credibility for audits and safety programs. Application: Suitable for facilities with strict NEC and safety certification requirements across manufacturing floors and distribution centers. Feature: Heavy duty fusible safety switch design for reliable isolation. Business Impact: Improves safety margins during maintenance and fault conditions, reducing arc-flash exposure and protecting personnel. Application: Recommended for machine control circuits, feeders, and panel disconnects in high-power environments. Feature: Compatibility with Eaton’s safety switch ecosystem (Commander Safety Switch V16 reference in extended description). Business Impact: Streamlined procurement, spare parts availability, and consistent installation practices across multiple protection devices. Application: Best for facilities standardizing on Eaton protection and control components. Feature: Clear mounting and wiring compatibility with standard enclosures and panels. Business Impact: Faster installation, fewer field modifications, and lower labor costs. Application: Suitable for new builds and upgrades in industrial facilities requiring dependable electrical protection and easy maintenance.
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FAQs
The 12HD421 is designed for integration with standard Eaton protection devices and typical control panels. Plan for its 25.5 in length, 13.25 in width, and 9 in height footprint, ensure adequate enclosure space, and confirm mounting patterns align with existing terminal blocks. Use ULListed wiring practices and torque values per manufacturer guidance to maintain barrier integrity and compliance.
Catalog Number: 12HD421; Product Dimensions: 25.5 in L × 13.25 in W × 9 in H; Weight: 15 lb. Compliances include NEC 230.62 barrier and UL Listed certification. These specs support safe, compliant isolation for industrial power circuits and align with standard control panel configurations.
The 12HD421 is built as a heavy duty fusible safety switch with UL Listed certification and NEC barrier compliance, indicating suitability for demanding industrial applications. While exact IP ratings aren’t specified here, its robust construction and certification support reliable operation in typical factory environments when installed per guidance and within appropriate enclosure protection.
The 12HD421 is UL Listed and NEC 230.62 barrier compliant. UL Listing confirms product safety and reliability under recognized standards, while NEC barrier compliance ensures safe separation between live parts and operators, reducing arc-flash risk and helping meet electrical safety program requirements in manufacturing and processing facilities.
By providing reliable isolation, UL Listed safety, and NEC barrier compliance, the 12HD421 reduces downtime from fault events and simplifies maintenance planning. Its compact footprint, compatibility with Eaton components, and straightforward installation also shorten project timelines and lower labor costs during upgrades or expansions.