Cooper Bussmann GMA-500-R Cartridge Fast-acting Fuse 0.5A

Product Description

The COOPER BUSSMANN GMA-500-R is a glass cartridge fast-acting fuse rated at 0.5 amps, designed for overcurrent protection in low-amperage circuits. Measuring 20 mm in overall length and 5 mm in diameter, this is a standard mini cartridge form factor widely used in electronic control boards, instrumentation panels, and HVAC low-voltage circuits. The glass body allows for quick visual inspection of the fuse element without removal. It carries an interrupting rating of 10,000 amps at 125 volts and 35 amps at 250 volts, making it suitable for applications where high fault-current interrupting capacity is required at low voltage levels. Installation is performed by qualified electricians or electronics technicians working on control systems.

This fuse is used in residential and light commercial applications where mini cartridge fuse holders are specified. Typical installations include HVAC control boards, transformer secondary circuits, appliance control panels, and electronic test equipment. The fast-acting response characteristic makes it appropriate for circuits without high inrush loads, where immediate interruption on overload is required. It is sold individually but must be ordered in multiples of five per manufacturer minimum order quantity.

Key Features

• Fast-acting fuse timing for immediate overcurrent response in sensitive circuits
• Glass body construction allows visual inspection of the fuse element
• 10,000-amp interrupting rating at 125 volts for high fault-current capacity
• Mini cartridge form factor: 20 mm overall length, 5 mm diameter
• UL Listed and CSA Certified for use in listed equipment
• RoHS compliant per directive 2002/95/EC

Compatibility

Designed as an OEM-style replacement for mini cartridge fuse applications requiring a 0.5A fast-acting glass fuse in the 5 mm x 20 mm form factor.

Installation Notes

This fuse is installed and serviced by licensed electricians or qualified HVAC technicians. Always de-energize and lock out the circuit before replacing a fuse. Confirm the replacement fuse amperage and interrupting rating match the original specification before installation. Do not substitute a higher-amperage fuse or a slow-blow type in a circuit rated for a fast-acting element.