Cooper Bussmann GMA-7-R Fast-acting Cartridge Fuse 7A

Product Description

The COOPER BUSSMANN GMA-7-R is a glass-body, fast-acting cartridge fuse rated at 7 amps and designed for overcurrent protection in low-voltage control circuits, instrumentation panels, and electronic equipment. The mini cartridge form factor measures 20 mm in overall length and 5 mm in diameter, conforming to the IEC standard glass tube fuse profile. With an interrupting rating of 200 amps at 125 volts, it provides reliable fault clearing in circuits where speed of response is critical. Electricians, panel technicians, and electronics service professionals install this fuse type in fuse holders and fusible disconnect blocks across a wide range of control applications.

The GMA-7-R is suited for residential and light commercial control panels, HVAC low-voltage circuits, appliance service boards, and instrumentation equipment requiring a fast-acting protective device. Its glass body allows visual inspection of the fuse element without removal, simplifying field troubleshooting. The 7 A rating makes it appropriate for moderate-load control circuits where nuisance blowing from inrush must be balanced against fast fault response.

Key Features

• Fast-acting fuse timing for rapid response to overcurrent faults
• Glass body construction allows visual inspection of the fuse element
• 7 A current rating suitable for low-voltage control and instrumentation circuits
• 200 A interrupting rating at 125 volts
• Mini cartridge form factor: 20 mm length, 5 mm diameter
• UL Recognized (Guide JDYX2, File E19180) and UL/CSA 248-14 listed; PSE approved; RoHS 2002/95/EC compliant

Compatibility

Designed as an OEM-style replacement for mini glass cartridge fuse applications requiring a 5 mm x 20 mm, 7 A fast-acting fuse in panel-mount or inline fuse holders rated for this form factor.

Installation Notes

Installation and replacement of fuses must be performed by a qualified electrician or trained service technician. Always de-energize the circuit and verify absence of voltage before removing or installing a fuse. Confirm the replacement fuse amperage and interrupting rating match the original equipment specification before insertion. Consult the NEC and applicable equipment documentation for proper overcurrent protection requirements.