Eaton NON-25 Cartridge Fuse 25A 250V Class K5

Product Description

The EATON NON-25 is a 25-amp, 250-volt general-purpose cartridge fuse designed for one-time overcurrent protection in non-motor-load circuits. Built to Class K5 standards with a 50,000 ampere interrupting rating (AIR), it delivers reliable fault protection in lighting circuits, main panel applications, and branch circuits that do not serve large inductive motor loads. Ferrule-style ends ensure a secure fit in standard fuse holders. This is a single-use, no-time-delay fuse — it clears faults immediately without intentional hold time, making it appropriate where nuisance trips from inrush current are not a concern.

The NON-25 is suited for residential and light commercial electrical installations. Typical applications include lighting branch circuits, feeder protection in main panels, and general-purpose circuits where current-limiting performance is not required. It is not recommended for circuits with large electric motors, where time-delay or current-limiting fuses are the correct specification. Electricians and electrical contractors are the primary installers for this type of overcurrent device.

Key Features

• 25-amp rating at 250 volts for general-purpose branch and feeder circuit protection
• Class K5 construction with 50,000 AIR for reliable fault interruption
• No time delay — instantaneous overcurrent response
• Ferrule ends for secure seating in standard cartridge fuse holders
• One-time use design; replace after any overcurrent event
• UL Listed for use in non-current-limiting applications

Compatibility

Designed for use in non-current-limiting lighting circuits, main panel protection, and general branch circuits that do not contain large electric motors. Not suitable as a motor-circuit or current-limiting fuse replacement.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC). Always de-energize and lock out the panel or disconnect before handling or replacing fuses. Use an appropriately rated fuse puller when removing cartridge fuses from live-adjacent equipment. This is a one-time device — do not attempt to reuse a fuse that has operated.