Cooper Bussmann FNM-8 Cartridge Time Delay Fuse 8A 250V

Product Description

The COOPER BUSSMANN FNM-8 is a cartridge-style, time delay fuse rated for 8 amps at 250 volts. It is designed for general-purpose overcurrent protection in control circuits, motors, and low-voltage equipment where a brief inrush current must be tolerated before the fuse opens. The melamine body provides thermal stability under repeated load cycles. With an interrupting rating of 200 amps at 250 volts and 10,000 amps at 125 volts, it is suited for branch circuit and control panel applications where fault current levels fall within those limits. Electricians and HVAC technicians install this fuse in fuse holders sized for the standard cartridge body profile.

This fuse is commonly used in residential and light commercial control panels, HVAC equipment control circuits, and small motor applications where time delay characteristics are required to prevent nuisance opening on startup inrush. It mounts in a standard cartridge fuse holder and is a general-purpose replacement in 250-volt circuits requiring an 8-amp, time delay rated device. The green body color aids in quick visual identification during panel service.

Key Features

• 8-amp time delay rating tolerates motor inrush without nuisance opening
• 250-volt maximum voltage rating for control and branch circuit use
• Interrupting rating of 200 amps at 250 volts and 10,000 amps at 125 volts
• Melamine cartridge body for thermal stability and durability
• Green body color for fast visual identification
• CE Certified, CSA Certified, RoHS Compliant, and UL Listed 248-14

Compatibility

Designed as a general-purpose time delay cartridge fuse for use in standard cartridge fuse holders accepting a 10.3 mm diameter, 38.10 mm length fuse body at up to 250 volts and 8 amps.

Installation Notes

Installation should be performed by a licensed electrician or qualified HVAC technician in accordance with the National Electrical Code (NEC). Always de-energize and lock out the circuit before removing or installing fuses. Verify that the fuse holder is rated for the voltage and amperage of this device before installation. Do not substitute a higher amperage fuse to resolve nuisance opening without first diagnosing the underlying circuit fault.