Eaton FNM-40 Midget Time-delay Fuse 40A 32V

Product Description

The EATON FNM-40 is a 40-amp, 32-volt midget time-delay fuse designed for overcurrent protection in low-voltage control circuits, small motors, and sensitive electrical equipment. The time-delay action allows the fuse to ride through brief inrush currents common during motor startup without nuisance opening, while still providing reliable short-circuit and overload protection. At 13/32-inch diameter and 1-1/2-inch length, it fits standard midget fuse holders used across HVAC control panels, industrial control equipment, and similar low-voltage applications. Licensed electricians and HVAC technicians are the typical installers.

The FNM-40 is suited for residential and light commercial control circuits where 32-volt systems require time-delay overcurrent protection. Common applications include transformer secondary circuits, motor control centers, and low-voltage equipment panels. The midget form factor makes it a standard choice wherever space-constrained fuse holders are specified. It is well-matched to applications requiring UL-listed protection in compact control enclosures.

Key Features

• 40-amp rating handles high-current low-voltage control circuit loads
• Time-delay action tolerates motor inrush without nuisance tripping
• 32-volt rating suited for low-voltage and DC control circuits
• Midget form factor fits standard 13/32-inch by 1-1/2-inch fuse holders
• UL-listed construction for code-compliant installations

Compatibility

Designed as a standard replacement midget time-delay fuse for low-voltage control panels and equipment using 13/32-inch by 1-1/2-inch midget fuse holders rated at 32 volts.

Installation Notes

Installation should be performed by a licensed electrician or qualified HVAC technician in accordance with applicable NEC requirements. Always de-energize and lock out the circuit before replacing a fuse. Verify that the replacement fuse matches the ampere rating and voltage rating of the original. Never substitute a fuse with a higher ampere rating than the circuit is designed for.

Technical Specifications

• Ampere Rating: 40 amps
• Voltage Rating: 32 volts
• Fuse Type: Midget Time-Delay
• UPC: 05171252302

Standard Information

• Brand: EATON
• Manufacturer Part Number: FNM-40