Cooper Bussmann GDA-4A Cartridge Fast-acting Fuse 4A

Product Description

The COOPER BUSSMANN GDA-4A is a ceramic cartridge fast-acting fuse rated at 4 amps, designed for precise overcurrent protection in low-voltage control circuits, instrumentation panels, and electronic equipment. At 20 mm in overall length and 5 mm in diameter, it follows the standard IEC 20 mm miniature fuse format widely used in imported equipment, HVAC control boards, and industrial electronics. The ceramic body handles high interrupt conditions better than glass alternatives, making it a reliable choice where fault currents can spike sharply. Licensed electricians and electronics technicians are the primary installers of this component.

The GDA-4A is suited for residential and light commercial applications where IEC-standard 20 mm fuse holders are already in place. Common installations include HVAC control panel protection circuits, low-voltage signal equipment, test instruments, and imported machinery that specifies IEC 60127-2 compliant fusing. The fast-acting response characteristic means it opens quickly on overload without intentional time delay, making it appropriate for circuits without high inrush loads.

Key Features

• Fast-acting fuse response for circuits without inrush current demands
• Ceramic body construction for reliable high-interrupt performance
• Standard IEC 20 mm x 5 mm cartridge form factor fits widely available panel fuse holders
• RoHS compliant construction
• Carries multiple international certifications including UL, CSA, IEC 60127-2, CCC, IMQ, and SEMKO

Compatibility

Designed as an OEM-style replacement for standard IEC 20 mm x 5 mm miniature cartridge fuse holders used in low-voltage control and instrumentation circuits.

Installation Notes

Installation should be performed by a qualified electrician or electronics technician. Always de-energize and lock out the circuit before replacing any fuse. Verify that the replacement fuse amperage and physical dimensions match the original specification exactly before installing. Do not substitute a higher-amperage fuse to restore a blown circuit without first diagnosing the root cause of the overcurrent condition.