Cooper Bussmann GMF-1/2 Cartridge Time Delay Fuse 0.5A

Product Description

The COOPER BUSSMANN GMF-1/2 is a glass cartridge time delay fuse rated at 0.5 amps and 300 volts with a 10 kA interrupting capacity at AC. It is designed to protect low-current circuits from overcurrent conditions while tolerating brief inrush surges without nuisance tripping. The time delay characteristic makes it well suited for circuits with motors, transformers, or other inductive loads that draw higher current at startup. Electricians and instrumentation technicians install this fuse in fuse holders on control panels, HVAC equipment, and electronic instrumentation where precise low-amperage protection is required.

This fuse is used in residential and light commercial applications wherever a 0.5 A time delay fuse is specified. Common installation scenarios include HVAC control circuits, measuring instruments, and industrial control panels that require a non-rejecting glass cartridge fuse conforming to CSA and UL standards. Its compact 15.9 mm diameter fits standard cartridge fuse holders designed for this body size.

Key Features

• 0.5 A time delay rating tolerates brief inrush current without nuisance tripping
• 300 V AC voltage rating suitable for control and instrumentation circuits
• 10 kA interrupting capacity at AC for reliable fault protection
• Glass body allows visual inspection of the fuse element without removal
• Non-rejecting design fits standard cartridge fuse holders
• Certified to CSA C22.2 No. 248.14 and UL Listed 248-14 for code compliance

Compatibility

Designed for use in standard cartridge fuse holders accepting a 15.9 mm diameter, 2.25 inch overall length non-rejecting glass fuse. Verify fuse holder voltage and amperage ratings before installation.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the NEC and applicable local codes. De-energize and lock out the circuit before removing or installing any fuse. Use an appropriately rated fuse puller when servicing cartridge fuses in live panels to avoid contact with energized components. Confirm the replacement fuse amperage, voltage, and time delay rating match the circuit requirements exactly before reinstalling power.