Littelfuse FLNR6.25 Time Delay Fuse 6.25A 250V RK5

Product Description

The LITTELFUSE FLNR6.25 is a Class RK5 time-delay fuse rated at 6.25 amps and 250 volts. It is designed to provide overcurrent protection in electrical circuits where a brief startup surge must be tolerated without nuisance blowing. The time-delay characteristic makes it well suited for motor loads, transformers, and similar inductive equipment that draws a temporary inrush current on startup. Licensed electricians and HVAC technicians install this fuse type in control panels, disconnect switches, and branch circuit protection applications where both overload and short-circuit protection are required.

This fuse is used in residential and light commercial electrical systems. Common applications include motor branch circuits, HVAC equipment disconnects, and control circuit protection. The Class RK5 designation indicates it meets a specific interrupting rating and dimensional standard, fitting RK5-rated fuse holders and disconnect blocks. It is a direct replacement in any installation calling for a 6.25-amp, 250-volt, Class RK5 time-delay fuse.

Key Features

• 6.25-amp current rating for precise overcurrent protection
• 250-volt AC rating suitable for single-phase branch circuits
• Class RK5 designation meets industry dimensional and interrupting standards
• Time-delay element tolerates motor inrush and transformer magnetizing current
• Provides both overload and short-circuit protection in a single element

Compatibility

Designed as a direct replacement in Class RK5 fuse holders and disconnect switches rated for 250 volts and requiring a 6.25-amp time-delay fuse.

Installation Notes

Installation must be performed by a qualified electrician in accordance with the National Electrical Code (NEC). Always de-energize and lock out the circuit before removing or installing a fuse. Verify the fuse holder is rated for Class RK5 fuses and that the circuit voltage and amperage do not exceed the fuse ratings. Never substitute a fuse with a higher amperage rating to address nuisance blowing.

Technical Specifications

• Amperage: 6.25 amps
• Voltage Rating: 250 volts
• Fuse Class: RK5
• Fuse Type: Time Delay
• UPC: 07945815059

Standard Information

• Brand: LITTELFUSE
• Manufacturer Part Number: FLNR6.25