Eaton FNM-9 Miniature Time-delay Fuse 9A 250V

Product Description

The EATON FNM-9 is a miniature time-delay (Fusetron-type) fuse rated for low-amperage branch circuit and control circuit protection. Time-delay construction allows the fuse to tolerate brief inrush currents common in motor-start and transformer-fed circuits without nuisance opening, while still interrupting sustained overloads and short circuits. The FNM series is a recognized standard in HVAC control wiring, small motor circuits, and light commercial electrical panels where a compact 13/32-inch by 1-1/2-inch form factor is required. Licensed electricians and HVAC technicians are the primary installers.

The FNM-9 is suited for residential and light commercial applications including control transformer secondary circuits, fan motor branch protection, and low-voltage control panel fusing. It fits standard midget fuse holders and fuse blocks designed for the 13/32 by 1-1/2 inch body size. Rated at 9 amps and 250 volts AC, it covers a broad range of single-phase control and motor circuits found in HVAC equipment, small appliances, and industrial control panels.

Key Features

• Time-delay design tolerates motor inrush and transformer magnetizing current without nuisance blowing
• 9 amp continuous current rating for low-amperage circuit protection
• 250 volt AC rating suitable for single-phase control and branch circuits
• Compact midget fuse body fits standard 13/32 by 1-1/2 inch fuse holders
• FNM series is a widely accepted standard in HVAC and light commercial control wiring

Compatibility

Designed as a direct-replacement miniature time-delay fuse for standard midget fuse holders and fuse blocks accepting the 13/32 by 1-1/2 inch body size, commonly used in HVAC control panels, motor circuits, and light commercial electrical equipment.

Installation Notes

Installation should be performed by a licensed electrician or qualified HVAC technician in accordance with the NEC and applicable local codes. Always de-energize and lock out the circuit before replacing a fuse. Confirm the replacement fuse matches the original ampere and voltage ratings exactly. Never substitute a higher-amperage fuse to resolve repeated blowing without first diagnosing the underlying fault.

Technical Specifications

• Ampere Rating: 9 amps
• Voltage Rating: 250 volts AC
• Fuse Type: Time-delay (Fusetron)
• Body Size: 13/32 by 1-1/2 inches (midget)
• UPC: 05171252090

Standard Information

• Brand: EATON
• Manufacturer Part Number: FNM-9