Cooper Bussmann FNM-6 Time Delay Cartridge Fuse 6A 250V

Product Description

The COOPER BUSSMANN FNM-6 is a general-purpose, time-delay cartridge fuse rated at 6 amps and 250 volts. It is designed to protect low-voltage control circuits and motor circuits from sustained overcurrent conditions without nuisance tripping during normal inrush events. The melamine body measures 1.5 inches in overall length and 10.3 mm in diameter, fitting standard fuse holders common in HVAC control panels, industrial control systems, and light commercial equipment. Licensed electricians and HVAC technicians install this fuse as a protective element in branch and control circuit applications.

This fuse is suited for residential and light commercial control circuit protection where time-delay characteristics are required. Typical applications include HVAC control boards, motor starter circuits, and low-voltage transformer secondary circuits. The time-delay design allows motors and other inductive loads to start without opening the fuse, while still providing reliable protection under genuine fault conditions. It mounts in a standard fuse holder and is available in single-unit packages.

Key Features

• Time-delay fuse element tolerates brief inrush current without nuisance tripping
• Rated 6 amps at 250 volts for control and motor circuit protection
• Melamine body construction for durability in control panel environments
• Interrupting rating of 10,000 amps at 125 volts and 200 amps at 250 volts
• Green body color for quick visual identification
• UL Listed, CSA Certified, CE Marked, and RoHS Compliant

Compatibility

Designed as a general-purpose time-delay cartridge fuse for use in standard fuse holders accepting 10.3 mm diameter, 1.5-inch cartridge fuses in HVAC, industrial control, and low-voltage circuit protection applications.

Installation Notes

Installation should be performed by a qualified electrician or licensed HVAC technician in accordance with applicable NEC requirements. Always de-energize and lock out the circuit before replacing or inspecting fuses. Confirm the replacement fuse matches the amperage and voltage rating of the original before re-energizing. Do not install a fuse with a higher amperage rating than the circuit is designed to carry.