Cooper Bussmann GLR-8 Cartridge Fast-acting Fuse 8A

Product Description

The COOPER BUSSMANN GLR-8 is a glass-body cartridge fuse rated at 8 amps and 300 volts with a fast-acting response characteristic. It measures 2.25 inches overall length and 0.63 inches in diameter (approximately 15.90 mm). Designed for fuse holder mounting, this non-rejecting cartridge fuse provides overcurrent protection in control circuits, HVAC equipment, and light industrial applications. The glass body allows visual inspection of the fuse element without removal. Licensed electricians and HVAC technicians install this fuse as part of routine service or component protection in low-voltage and line-voltage control panels.

The GLR-8 suits residential and light commercial applications where fast-acting overcurrent protection is required in control circuits, motor starters, and panel sub-circuits. Its cartridge form factor fits standard fuse holders that accept non-rejecting glass cartridge fuses. The 300-volt AC rating covers the majority of single-phase control and distribution circuits encountered in HVAC, plumbing equipment controls, and general electrical service work. With a 10 kA interrupting rating at AC, it handles the fault currents typical in light commercial panel environments.

Key Features

• Fast-acting fuse response for immediate overcurrent interruption
• Glass body allows visual confirmation of fuse condition without a continuity tester
• 300-volt AC rating suitable for single-phase control and distribution circuits
• 10 kA interrupting capacity at AC for light commercial fault current levels
• Non-rejecting cartridge design fits standard fuse holders
• CSA and UL Listed to recognized standards for reliable code-compliance documentation

Compatibility

Designed for use in standard fuse holders that accept non-rejecting glass cartridge fuses of the 2.25-inch by 0.63-inch body size. Consult the fuse holder manufacturer specifications to confirm dimensional and rejection-class compatibility before installation.

Installation Notes

Installation should be performed by a qualified electrician or licensed HVAC technician in accordance with the NEC and applicable local codes. Always de-energize and lock out the circuit before removing or installing any fuse. Use an insulated fuse puller when servicing fuse holders to avoid contact with energized components. Verify the replacement fuse amperage and voltage ratings match the original equipment specifications before restoring power.