Cooper Bussmann GDA-630MA Fast-acting Cartridge Fuse 0.63A

Product Description

The COOPER BUSSMANN GDA-630MA is a ceramic cartridge fast-acting fuse rated at 0.63 amps. It measures 20 millimeters in overall length and 5 millimeters in diameter, conforming to the standard 5x20mm miniature fuse form factor widely used in electronics, control panels, and low-voltage equipment. The fast-acting design responds quickly to overcurrent conditions, protecting sensitive components from damage. Licensed electricians, electronics technicians, and HVAC controls specialists install this fuse in equipment requiring precise, low-amperage circuit protection. Its ceramic body provides superior heat resistance and arc-quenching capability compared to glass-body alternatives.

This fuse is suited for residential and commercial applications where 5x20mm fast-acting fuse protection is required. Common uses include HVAC control boards, instrumentation panels, power supplies, appliance controls, and other low-voltage electronic assemblies that demand reliable and repeatable overcurrent protection at sub-one-amp levels. It is sold individually with a minimum order quantity of 5 units.

Key Features

• Fast-acting response for protection of sensitive electronic components
• Ceramic body construction for enhanced arc quenching and heat resistance
• Standard 5x20mm form factor for broad equipment compatibility
• Rated 0.63 amps for precise low-amperage circuit protection
• Meets multiple international standards including IEC 60127-2, UL, CSA, and RoHS

Compatibility

Designed as a direct replacement for standard 5x20mm fast-acting miniature cartridge fuses in control boards, instrumentation, and low-voltage electronic assemblies requiring 0.63-amp overcurrent protection.

Installation Notes

Always de-energize and lock out the equipment before replacing a fuse. Verify that the replacement fuse matches the original amperage rating and fuse type exactly — substituting a higher-rated fuse can result in equipment damage or fire hazard. Use an appropriate fuse puller tool when removing the fuse from a holder to avoid damage to the fuse or holder contacts. Fuse replacement in control panels should be performed by a qualified electrician or technician in accordance with applicable NEC guidelines.