KLDR003.T Equivalent & Substitute Parts

Part Overview

The KLDR003.T is a 3A cartridge fuse rated for 600 VAC / 300 VDC operation, designed for transformer protection applications. This component is classified as obsolete, making identification of suitable substitutes essential for ongoing system maintenance and component procurement. The POWR-GARD® KLDR series cartridge fuse requires a compatible holder for installation and operates with slow-blow response characteristics.

Substiute Parts

KLDR003.T

Littelfuse Inc.In Stock: 1435KLDR003.T Datasheet

Current PartRFQ

KLDR003.TXP

Littelfuse Inc.In Stock: 885KLDR003.TXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KLDR003.T is based on strict equivalence across all electrical and mechanical parameters. The substitute part must maintain identical specifications in the following critical areas:

• Current Rating: 3A
• Voltage Rating: 600 VAC / 300 VDC
• Response Time: Slow Blow
• Fuse Class: CC
• Package / Case: 5AG, 10mm x 38mm (Midget)
• Physical Dimensions: 0.406" Dia x 1.500" L
• Breaking Capacity: 200kA AC, 20kA DC
• Regulatory Approvals: CE, CSA, UL

The KLDR003.TXP meets all these requirements and is classified as an active product, providing a direct functional equivalent for the obsolete KLDR003.T.

Parameter Comparison

Engineering Selection Recommendations

The KLDR003.TXP is the direct equivalent substitute for the obsolete KLDR003.T. Both components are manufactured by Littelfuse Inc. and carry identical electrical ratings, mechanical specifications, and regulatory certifications (CE, CSA, UL). The KLDR003.TXP maintains ROHS3 compliance and is currently in active production status, ensuring availability for procurement and long-term supply chain continuity.

Selection of the KLDR003.TXP eliminates compatibility concerns, as all parameters—including current rating, voltage ratings, response time, fuse class, physical dimensions, and breaking capacity—are identical to the original component. No circuit modifications or holder changes are required.

Frequently Asked Questions (FAQ)

Q: Can the KLDR003.TXP be used as a direct replacement for the KLDR003.T?

A: Yes. The KLDR003.TXP is a direct equivalent. All electrical parameters (3A, 600 VAC / 300 VDC, slow-blow response), mechanical specifications (5AG, 10mm x 38mm package), and regulatory approvals (CE, CSA, UL) are identical.

Q: What is the difference between KLDR003.T and KLDR003.TXP?

A: The primary difference is product status. The KLDR003.T is obsolete, while the KLDR003.TXP is active. Both components are functionally and mechanically equivalent.

Q: Will the KLDR003.TXP fit in the same holder as the KLDR003.T?

A: Yes. Both components use the 5AG, 10mm x 38mm (Midget) package format with identical physical dimensions (0.406" Dia x 1.500" L). No holder modifications are required.

Q: Are the regulatory certifications the same?

A: Yes. Both the KLDR003.T and KLDR003.TXP carry CE, CSA, and UL approvals. Both are ROHS3 compliant.

Q: What is the breaking capacity of these fuses?

A: Both components have a breaking capacity of 200kA AC and 20kA DC at rated voltage.