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KLDR.500T The KLDR.500T is a 500mA cartridge fuse from Littelfuse Inc., rated for 600VAC/300VDC with a 200kA AC breaking capacity. It is a Class CC, slow blow fuse designed for transformer protection.
Mfr Part #:

KLDR.500T

Available from 1 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The KLDR.500T is a 500mA cartridge fuse from Littelfuse Inc., rated for 600VAC/300VDC with a 200kA AC breaking capacity. It is a Class CC, slow blow fuse designed for transformer protection.
✓ Total Stock: 8 pcs

KLDR.500T Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Bristol Electronics ✓
Non-Authorised Inventory information
8 pcs
On Request
8 pcs On Request 1 On Request On Request 2026-02-25 06:16:38 On Request On Request
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KLDR.500T Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Approval Agency
Breaking Capacity @ Rated Voltage
Class
Current Rating (Amps)
Fuse Type
Mounting Type
Response Time
Voltage Rating
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KLDR.500T Description

Short technical summary and product information.

The Littelfuse KLDR.500T is a Class CC cartridge fuse with a current rating of 500mA (0.5A). It is rated for 600VAC and 300VDC, with a high breaking capacity of 200kA AC and 20kA DC. The slow blow (time-delay) characteristic makes it suitable for applications with inrush currents, such as transformer protection. This fuse requires a holder for mounting and is packaged in the 5AG, 10mm x 38mm (Midget) form factor, with dimensions 0.406" diameter x 1.500" length (10.30mm x 38.10mm). It is approved by CE, CSA, and UL. Note: RoHS3 and REACH compliance status are unverified (data from phase1).

KLDR.500T Quick Information

Product Type: Electrical Specialty Fuse
Series: KLDR
Canonical Name: Littelfuse KLDR.500T 500mA Cartridge Fuse, Class CC, Slow Blow
Subcategory: Class CC Fuse

KLDR.500T Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

KLDR.500T Features

  • 500mA current rating for precision protection.
  • Rated for 600VAC and 300VDC operation.
  • High breaking capacity of 200kA AC and 20kA DC.
  • Slow blow design for handling inrush currents.
  • Class CC fuse for branch circuit protection.

KLDR.500T Applications

  • Ideal for transformer protection applications.
  • Suitable for high-fault current industrial circuits.
  • Used in motor control centers and panelboards.
  • Protects branch circuits requiring time-delay fuses.

KLDR.500T FAQs

7 frequently asked questions generated from this part’s specifications.
What is the current rating of the KLDR.500T?

The current rating is 500mA (0.5A).

What are the voltage ratings for this fuse?

Rated for 600VAC and 300VDC.

What is the breaking capacity of the KLDR.500T?

200kA AC and 20kA DC.

Is the fuse slow blow or fast acting?

It is a slow blow (time-delay) fuse.

What is the package size and case?

5AG, 10mm x 38mm (Midget) with dimensions 0.406" x 1.500" (10.30mm x 38.10mm).

What is the primary application of the KLDR.500T?

Transformer protection.

What agency approvals does this fuse have?

CE, CSA, and UL.

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