Littelfuse BLF.500 250V Midget Fuse 0.5 Amp

Product Description

The LITTELFUSE BLF.500 is a 250-volt midget fuse rated at 0.5 amps, designed for overcurrent protection in low-amperage electrical circuits. Midget fuses of this type are used in control circuits, instrumentation panels, and light-duty branch circuits where compact fuse holders require a smaller form factor than standard class fuses. The BLF.500 provides reliable fast-acting protection, interrupting fault current quickly to safeguard sensitive downstream components. Electricians and controls technicians working on HVAC control panels, industrial equipment, and commercial electrical systems commonly install this type of fuse.

This fuse is suited for residential and light commercial applications where 250-volt midget fuse protection is required. Typical install scenarios include motor control centers, HVAC equipment control boards, instrumentation enclosures, and panel-mount fuse holders sized for midget-style fuses. The compact body fits standard midget fuse holders and clips designed for this form factor.

Key Features

• 0.5 amp rating provides precise overcurrent protection for low-amperage circuits
• 250-volt rated for use in single-phase and control-voltage applications
• Midget form factor fits standard midget fuse holders and panel-mount clips
• Fast-acting response interrupts fault current quickly to protect sensitive components

Compatibility

Designed as an OEM-style replacement for standard 250-volt midget fuse applications requiring a 0.5-amp rating in residential, commercial, and light industrial control circuits.

Installation Notes

Midget fuse replacement should be performed by a licensed electrician or qualified controls technician. Always de-energize and lock out the circuit before removing or installing a fuse, following applicable NFPA 70 (NEC) lockout/tagout procedures. Confirm the replacement fuse matches the original amperage and voltage rating before reinstalling. Never substitute a higher-amperage fuse to bypass a repeated fault condition.

Technical Specifications

• Voltage Rating: 250 volts
• Amperage Rating: 0.5 amps
• Fuse Type: Midget
• UPC: 07945810024

Standard Information

• Brand: LITTELFUSE
• Manufacturer Part Number: BLF.500