Cooper Bussmann GMA-2-R Fast-acting Cartridge Fuse 2A

Product Description

The COOPER BUSSMANN GMA-2-R is a glass cartridge fast-acting fuse rated at 2 amps. It is designed for overcurrent protection in low-voltage control circuits, instrumentation panels, and electronic equipment. The GMA-2-R measures 20 mm in overall length and 5 mm in diameter, conforming to the standard 5x20 mm mini fuse form factor. The fast-acting response characteristic means it clears fault current quickly, making it well suited for circuits where downstream components cannot tolerate sustained overloads. Licensed electricians, electronics technicians, and HVAC controls technicians are the primary installers. The glass body allows visual inspection of the element without removal, which speeds up troubleshooting in the field.

This fuse is used in residential and light commercial control boards, low-voltage transformer circuits, instrumentation equipment, and small appliance protection applications. It fits standard 5x20 mm fuse holders and PCB-mounted clips. The 2-amp rating suits signal-level and low-power branch circuits where precise overcurrent protection is required. It is sold individually but must be ordered in multiples of 5.

Key Features

• Fast-acting fuse element clears fault current quickly to protect sensitive electronics
• Glass body allows visual inspection of the fuse element without a meter
• 2-amp rating suits low-voltage control and instrumentation circuits
• High interrupting rating: 10,000 amps at 125 volts and 100 amps at 250 volts
• Meets UL, CSA, and RoHS standards for broad application compliance
• Standard 5x20 mm cartridge form factor fits widely available fuse holders

Compatibility

Designed as an OEM-style replacement for standard 5x20 mm fast-acting cartridge fuse positions in control boards, instrumentation enclosures, and low-voltage electronic equipment requiring a 2-amp fast-acting glass fuse.

Installation Notes

De-energize the circuit and verify absence of voltage before replacing any fuse. Electricians and controls technicians should confirm the replacement fuse matches the original amperage rating and fuse timing before installation. NEC guidelines apply when servicing panelboard or control circuit fusing. Never substitute a higher-rated fuse to bypass a recurring overcurrent condition without first identifying and correcting the root cause.