5x20mm PCB Mount Fuse Holder

Product Overview

The 5x20mm Through-Hole PCB Mount Fuse Holder is a high-reliability circuit protection component designed to securely house standard 5mm by 20mm miniature cartridge fuses directly onto printed circuit boards. Featuring robust dual-pin through-hole solder terminals, this assembly provides superior mechanical stability and minimal electrical resistance, serving as a critical safety barrier in both AC mains line protection and DC power bus distribution systems.

Advanced Material Construction and Thermal Performance

Manufactured using a high-temperature glass-filled PBT thermoplastic housing rated to UL 94V-0 flame retardancy, this fuse socket offers exceptional insulation resistance and high dielectric strength under demanding operational conditions. The internal spring contacts are precision-stamped from premium tin-plated brass, guaranteeing high retention force over repeated fuse insertion cycles, preventing contact oxidation, and maintaining low thermal dissipation during continuous duty near maximum rated current capacity.

Technical Specifications and Electrical Characteristics

Engineered for broad compatibility across global power architectures, the holder features a nominal rating of 250V AC and up to 6.3A continuous current handling capability. It exhibits a low contact resistance under 5 milliohms and a dielectric withstand voltage exceeding 1500V AC for one minute. The standard 22.5mm terminal pitch fits standard grid PCB layouts, making it ideal for automated assembly and wave-soldering production lines.

Broad Application Spectrum

This PCB fuse block is widely deployed across industrial automation controllers, switched-mode power supplies (SMPS), uninterruptible power supplies (UPS), commercial HVAC control boards, digital instrumentation, and consumer appliances. Its open-frame design facilitates rapid visual inspection and straightforward fuse replacement without requiring specialized extraction tools.