Cooper Bussmann GLR-5 Cartridge Fast-acting Fuse 5A

Product Description

The COOPER BUSSMANN GLR-5 is a glass cartridge fast-acting fuse rated at 5 amps and 300 volts, designed to provide overcurrent protection in control circuits, HVAC equipment, and light industrial applications. At 2.25 inches overall length and 0.63 inches in diameter, it fits standard fuse holders designed for this form factor. The fast-acting response characteristic means the fuse clears faults quickly without intentional time delay, making it appropriate for circuits where downstream components cannot tolerate sustained overcurrent. Installation is handled by licensed electricians and qualified service technicians working on low-voltage control panels and equipment.

This fuse is suited for use in residential and light commercial HVAC control circuits, motor control panels, and general electrical distribution equipment where a 300-volt, 5-amp cartridge fuse is specified. It installs into a compatible fuse holder using no special tooling. Applications typically include transformer secondary protection, control board fusing, and branch circuit protection in enclosed equipment where the fuse holder dictates a non-rejecting cartridge style.

Key Features

• Fast-acting fuse response for circuits requiring immediate fault clearing
• 300-volt AC rating with 10 kA interrupting capacity at AC
• Glass fuse body allows visual inspection of the fuse element without removal
• Non-rejecting cartridge design fits standard fuse holders for this form factor
• CSA C22.2 No. 248.14 certified and UL Listed 248-14, confirming compliance with recognized safety standards

Compatibility

Designed for use in fuse holders that accept a non-rejecting cartridge fuse measuring 2.25 inches in overall length and 0.63 inches in diameter. Verify holder specifications before installation.

Installation Notes

Always de-energize and lockout/tagout the equipment before replacing a fuse. Use insulated fuse pullers when removing or seating cartridge fuses in live-adjacent holders. Verify that the replacement fuse amperage and voltage ratings match the circuit requirements and any markings on the equipment nameplate. Work performed on electrical panels and control circuits should comply with applicable NEC requirements and local codes.