Cooper Bussmann GMC-250-R 0.25A Time Delay Cartridge Fuse

Product Description

The COOPER BUSSMANN GMC-250-R is a miniature cartridge time-delay fuse rated at 0.25 amps. It is designed for overcurrent protection in low-amperage control circuits and electronic equipment. The glass body measures 20 mm in overall length and 5 mm in diameter, conforming to the standard 5x20 mm fuse footprint common in instrumentation, HVAC control boards, and light commercial electrical panels. The time-delay characteristic allows momentary inrush currents to pass without nuisance opening while still protecting downstream components from sustained fault conditions. Licensed electricians and HVAC technicians are the typical installers.

This fuse is suited for residential and light commercial applications where a 5x20 mm time-delay fuse is specified. Common installation scenarios include control circuit protection in HVAC equipment, industrial instrumentation, and electronic panels operating at voltages up to 250 volts. The glass body allows visual confirmation of fuse condition without removal, which speeds diagnostic work during service calls.

Key Features

• Time-delay action tolerates startup inrush without nuisance tripping
• 0.25A rating for low-amperage control and instrumentation circuits
• Standard 5x20 mm glass cartridge body for broad panel compatibility
• 10,000A interrupting rating at 125V for reliable fault clearing
• 35A interrupting rating at 250V
• UL Listed, CSA Certified, KC-Mark Certified, and RoHS Compliant

Compatibility

Designed as an OEM-style replacement for 5x20 mm miniature time-delay cartridge fuse positions in HVAC control boards, instrumentation panels, and electronic equipment rated up to 250 volts.

Installation Notes

Installation should be performed by a licensed electrician or qualified HVAC technician in accordance with NEC requirements. De-energize and lock out the equipment before removing or installing any fuse. Verify that the replacement fuse matches the amperage, voltage rating, and time-delay classification specified on the equipment nameplate or wiring diagram. Never substitute a higher-amperage fuse or bypass the fuse holder.