Mersen GDL1-1/4 Time-delay Glass Fuse 1.25A 250V

Product Description

The MERSEN GDL1-1/4 is a miniature time-delay glass fuse rated at 1.25 amps and 250 volts AC. The time-delay design allows brief inrush currents to pass without nuisance tripping, making it well-suited for protecting small motors, transformers, and sensitive electronic control circuits found in HVAC, refrigeration, and light commercial equipment. The ferrule-style body measures 0.25 x 1.25 inches, conforming to the standard 6x32 mm form factor. Licensed electricians, HVAC technicians, and electronics service professionals install this fuse as a direct replacement in control panel fuse holders that accept this standard size.

This fuse is commonly used in residential and light commercial applications where low-amperage overcurrent protection is required. Typical installations include HVAC control boards, transformer secondary circuits, instrumentation panels, and small appliance control circuits. The time-delay characteristic suits equipment with startup inrush loads, where a fast-acting fuse would open unnecessarily on motor start or transformer energization.

Key Features

• Time-delay action handles brief inrush currents without nuisance tripping
• 250V AC voltage rating suitable for standard low-voltage control circuits
• 1.25A current rating provides precise overcurrent protection for sensitive loads
• Glass body allows visual inspection of the fuse element without removal
• Standard 0.25 x 1.25 inch ferrule form factor fits widely available panel-mount fuse holders

Compatibility

Designed as an OEM-style replacement for miniature ferrule-style time-delay fuses in residential and light commercial control panels requiring a 0.25 x 1.25 inch, 1.25A, 250V fuse.

Installation Notes

Installation should be performed by a qualified electrician or licensed HVAC technician in accordance with NEC guidelines. Always de-energize and lock out the equipment before replacing a fuse. Verify the replacement fuse matches the original amperage, voltage, and time-delay classification before installation. Never substitute a higher-amperage fuse or bypass the fuse holder.

Technical Specifications

• Voltage Rating: 250V AC
• Current Rating: 1.25A
• Fuse Type: Time-Delay
• Body Material: Glass
• Size: 0.25 x 1.25 inches (6x32 mm)
• Termination Style: Ferrule
• UPC: 782001763220

Standard Information

• Brand: MERSEN
• Manufacturer Part Number: GDL1-1/4