Littelfuse

FLNR004-ID - 4 Amp Fuse

FLNR004-ID - 4 Amp Fuse

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FLNR004-ID - 4 Amp Fuse

When your circuit calls for a 4-amp Class R fuse, the FLNR004-ID offers a practical combination of time-delay protection, current limitation, and easy status identification. This cartridge-style fuse is rated for 4 amps at 250 VAC and has a 200 kA interrupting rating at 250 VAC. Its time-delay design allows the fuse to handle appropriate short-lived current increases without operating unnecessarily, while still providing overcurrent protection when conditions call for it. Just as useful in the field is the indicating feature. It gives maintenance personnel a quicker way to spot an operated fuse, which can make troubleshooting a little less time-consuming when working through panels or equipment with multiple fused circuits.

Key Features and Benefits

  • 4A, 250VAC rating for compatible low-amperage circuit protection applications.
  • Time-delay performance accommodates appropriate temporary inrush currents rather than reacting immediately to every brief current increase.
  • Current-limiting Class R design helps limit fault-current energy under applicable overcurrent conditions.
  • Built-in indication makes an operated fuse easier to identify during inspection and troubleshooting.
  • Cartridge-style configuration fits compatible equipment and fuse holders designed for this fuse type.
  • Compact 2.0 x 0.56 x 0.56-inch size makes the FLNR004-ID easy to identify when checking dimensional requirements.

Technical Specifications

  • Part Number: FLNR004-ID
  • Type: FLNR
  • Fuse Class: Class R
  • Amperage: 4A
  • Voltage Rating: 250VAC
  • A.I.C. Rating: 200 kA @ 250VAC
  • Fuse Style: Cartridge
  • Time Delay: Yes
  • Current Limiting: Yes
  • Indicating: Yes
  • Height: 2.0 in.
  • Width: 0.56 in.
  • Depth: 0.56 in.

Material Compliance and Certifications

The supplied specifications identify the FLNR004-ID as a Class R, current-limiting fuse with a 200 kA A.I.C. rating at 250VAC. Specific agency certifications, material declarations, and compliance listings were not provided in the available product information, so claims beyond the supplied specifications should not be assumed.

Where It Works Best

The FLNR004-ID 4A fuse is suitable for compatible commercial and industrial electrical equipment where time-delay Class R protection is required. It's particularly useful on circuits where brief, normal current surges can occur and an instantaneous response isn't desirable.


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Littelfuse® is a registered trademark of Littelfuse, Inc. Products sold are surplus, used, or refurbished and are NOT supplied by Littelfuse, Inc. or its affiliates.

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