Eaton Bussmann gmd-3-r Glass Fuse 3A 250V Ac 5 Pack

Product Description

The EATON BUSSMANN gmd-3-r is a time-delay glass fuse rated at 3 amps and 250 volts AC, designed for low-voltage circuit protection in industrial and commercial control equipment. Part of the Bussmann GMD Series, it features a cylindrical glass body measuring 20mm in length by 5mm in diameter. The non-rejection body style fits standard 5x20mm fuse blocks and holders. With an interrupt rating of 100 amps at 250V AC and 10 kiloamps at 125V AC, it provides reliable overcurrent protection in applications where brief inrush currents must be tolerated before the fuse clears a fault.

The gmd-3-r is suited for residential and commercial electrical panels, control boards, instrumentation, and appliance service where a 5x20mm time-delay fuse is required. It is packaged in a quantity of five, making it practical for field service kits and shop stock. The glass body allows visual inspection of the element without a continuity tester. Compatible fuse block series includes the Bussmann HTB. Cross-reference equivalents include Littelfuse 239 and Mersen GSC in the same form factor.

Key Features

• Time-delay element tolerates inrush current before clearing sustained overloads
• Cylindrical glass body — 20mm length by 5mm diameter — fits standard 5x20mm holders
• Interrupt rating of 100 amps at 250V AC and 10kA at 125V AC
• Non-rejection body style for use in universal 5x20mm fuse blocks
• Single-element construction for straightforward overcurrent response
• Meets CE, CSA Class 1422-01, and UL 248-14 (Guide JDYX) standards
• Packaged in quantities of five for stocking and field replacement

Compatibility

Compatible with Bussmann HTB fuse block series. Cross-reference equivalents include Littelfuse 239, Mersen GSC, and other GMD and GSC series 5x20mm time-delay glass fuses.

Installation Notes

Installation and replacement should be performed by a qualified electrician or trained technician. Always de-energize the circuit and verify zero voltage with a meter before removing or inserting a fuse. Confirm the replacement fuse matches the original amperage, voltage, and time-delay rating. Consult NEC guidelines for proper fuse selection and overcurrent protection requirements in the application.

Technical Specifications

• Current Rating: 3 amps
• Voltage Rating: 250V AC
• Interrupt Rating: 100 amps at 250V AC; 10kA at 125V AC
• Fuse Type: Time-Delay, Single Element
• Body Style: Cylindrical, Non-Rejection
• Body Material: Glass
• Length: 20mm (approx. 0.787 inches)
• Diameter: 5mm (approx. 0.197 inches)
• Package Quantity: 5
• Series: GMD
• Certifications: CE, CSA Class 1422-01, UL 248-14 Guide JDYX
• Country of Origin: China

Standard Information

• Brand: EATON BUSSMANN
• Manufacturer Part Number: gmd-3-r