Cooper Bussmann NON-20 Cartridge Fuse 20A 250V

Product Description

The COOPER BUSSMANN NON-20 is a 20-amp, 250-volt Type NON cartridge fuse designed for general-purpose overcurrent protection in a wide range of electrical applications. This one-time, non-renewable fuse provides reliable branch-circuit and feeder protection where fast-acting response to overloads and short circuits is required. At 2 inches in length and 0.5625 inches in diameter, the NON-20 fits standard ferrule-style fuse holders and disconnect blocks. It is a staple item for electricians stocking service vans and panels with common amperage sizes.

The NON-20 is suited for residential and light commercial electrical installations, including use in disconnect switches, load centers, and general-purpose fuse blocks. It is commonly installed to protect motors, appliances, lighting circuits, and other 250-volt or lower electrical loads where a non-time-delay fuse is appropriate. Packaged in a box of 10 individual fuses, it supports both field service work and shop inventory replenishment.

Key Features

• 20-amp rating with 250-volt AC maximum voltage
• Type NON one-time, non-renewable construction for fast-acting overcurrent response
• Ferrule-style cartridge body fits standard Class H fuse holders and disconnect blocks
• 2-inch length and 0.5625-inch diameter for drop-in replacement in existing hardware
• Boxed packaging of 10 fuses supports van stock and bulk service needs

Compatibility

Designed as an OEM-style replacement for standard Class H ferrule cartridge fuse holders rated for Type NON fuses up to 250 volts and 30 amps or less.

Installation Notes

Installation and replacement of cartridge fuses must be performed by a qualified electrician in accordance with NFPA 70 (NEC) requirements. Always de-energize and lock out the circuit before opening any fuse holder or disconnect. Use an insulated fuse puller when removing or inserting ferrule-type cartridge fuses. Verify that the replacement fuse amperage and voltage rating match the circuit requirements and the markings on the fuse holder before restoring power.