Littelfuse KLNR008 RK1 Time-delay Fuse 8A 250V

Product Description

The LITTELFUSE KLNR008 is a Class RK1 time-delay fuse rated for 8 amps at 250 volts. Class RK1 fuses provide superior current-limiting performance compared to standard Class K fuses, offering tighter rejection specifications that prevent the installation of lower-rated fuses in the same holder. The time-delay characteristic allows the fuse to tolerate brief inrush currents common in motor and transformer circuits without nuisance opening, while still providing fast response to sustained overloads and short-circuit faults. Licensed electricians and HVAC technicians install these fuses in disconnect boxes, motor branch circuits, and equipment service panels.

The KLNR008 is suited for residential and light commercial HVAC equipment, motors, transformers, and other inductive loads that draw startup current above the continuous run rating. It fits standard Class RK1 rejection fuse holders and fusible disconnects, making it a direct replacement in applications where Class RK1 fusing is specified by the equipment manufacturer or the authority having jurisdiction.

Key Features

• Class RK1 rejection design prevents substitution of lower-performance fuse classes in the same holder
• Time-delay action tolerates motor inrush and transformer magnetizing currents without nuisance trips
• 8-amp continuous current rating at 250 volts AC
• Current-limiting construction reduces let-through energy during fault conditions
• Fits standard Class RK1 rejection fuse holders and fusible disconnects

Compatibility

Designed as a Class RK1 time-delay replacement fuse for use in standard rejection-style fuse holders and fusible disconnects rated for 250 volts and 8 amps or higher.

Installation Notes

Installation must be performed by a qualified electrician or licensed HVAC technician in accordance with the National Electrical Code (NEC) and applicable local codes. Always de-energize and lock out the circuit before removing or installing fuses. Verify that the replacement fuse class, voltage rating, and ampere rating match the equipment nameplate and overcurrent protection schedule. Never upsize a fuse beyond the rating specified by the equipment manufacturer or the circuit design.

Technical Specifications

• Ampere Rating: 8 amps
• Voltage Rating: 250 volts
• Fuse Class: RK1
• Response Type: Time-Delay
• UPC: 07945828063

Standard Information

• Brand: LITTELFUSE
• Manufacturer Part Number: KLNR008