Eaton 4HD663NFW Fusible Safety Switch - UL Listed
Part Number: 4HD663NFW
Quick Summary
Eaton 4HD663NFW is a heavy-duty fusible safety switch designed for reliable electrical isolation in industrial power distribution and machine control. When downtime or safety risk threaten project timelines, engineers need a rugged, easy-to-service solution that minimizes panel space and downtime. This device carries UL Listed certification and NEC 230.62 (C) compliant barrier, providing credible protection for personnel and equipment. Its compact footprint and standard enclosure format simplify installation in control panels and switchgear assemblies, while robust construction supports demanding environments. By choosing this safety switch, maintenance costs are reduced through straightforward diagnostics and longer service intervals, with strong compatibility across Eaton's Commander family and common control schemes.
Product Information
Extended Description
4HD663NFW Eaton: COMMANDER SAFETY SWITCH V19
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
4HD663NFW
UPC
786689908652
Product Length/Depth
29 in
Product Height
9.5 in
Product Width
17 in
Product Weight
30 lb
Compliances
NEC 230.62 (C) Compliant Barrier
Certifications
UL Listed
Feature: Heavy-duty fusible safety switch design provides reliable electrical isolation. Benefit: Reduces arc flash risk and accelerates safe shutdown, improving worker safety and minimizing downtime in harsh industrial environments. Application: Ideal for machine control panels and rugged power distribution in manufacturing lines. Feature: UL Listed certification and NEC 230.62 (C) compliant barrier. Benefit: Simplifies regulatory compliance and eases safety audits, lowering project risk. Application: Panels in facilities subject to strict electrical codes. Feature: Dimensions of 29 in L x 17 in W x 9.5 in H and 30 lb weight. Benefit: Predictable fit within standard control enclosures and streamlined installation; reduces field fabrication. Application: Retrofit or new panel builds where space planning matters. Feature: Catalog number 4HD663NFW and compatibility with Commander Safety Switch family. Benefit: Easy ordering, faster spare parts replacement, and cohesive system integration. Application: Replacement parts in existing Eaton installations. Feature: Robust construction and compatibility with common control schemes. Benefit: Lower maintenance costs and longer service life; supports seamless integration with industrial automation architectures. Application: Continuous operation in demanding production environments.
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FAQs
Consider mounting within a standard control panel or switchgear enclosure, noting the overall footprint of 29 in L x 17 in W x 9.5 in H and a weight of 30 lb. Ensure proper wiring clearances and fuse integration per manufacturer instructions, and verify compatibility with the Commander Safety Switch family for simplified maintenance and spares management.
Yes. The 4HD663NFW includes a NEC 230.62 (C) compliant barrier, providing the required safety separation between live components and accessible surfaces. This barrier design supports safer operation, easier code compliance, and smoother regulatory audits in industrial installations.
The unit excels in industrial power distribution and machine control panels where reliable isolation is critical. It is compatible with control schemes that use the Commander Safety Switch family, enabling cohesive integration with existing automation and protection architectures while delivering robust protection in demanding environments.
It is UL Listed and NEC-compliant, which ensures alignment with widely adopted safety standards and regulatory requirements. These certifications reduce risk during audits, simplify procurement for regulated facilities, and support safer, more predictable maintenance and operation over the system’s lifecycle.
The rugged build and straightforward diagnostics minimize maintenance cycles and downtime. Its compatibility with Eaton’s ecosystem simplifies spares management and troubleshooting, contributing to lower lifecycle costs and a faster return on investment in mission-critical automation environments.