KLDR030.T Equivalent & Substitute Parts

Part Overview

The KLDR030.T is a 30A cartridge fuse rated for 600 VAC / 300 VDC operation, manufactured by Littelfuse Inc. as part of the POWR-GARD® KLDR series. This component is classified as obsolete, which necessitates identification of active equivalent parts for continued system support and procurement. The fuse is designed for transformer protection applications and requires a compatible holder for installation.

Substiute Parts

KLDR030.T

Littelfuse Inc.In Stock: 1395KLDR030.T Datasheet

Current PartRFQ

KLDR030.TXP

Littelfuse Inc.In Stock: 761KLDR030.TXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KLDR030.T is determined by strict equivalence across the following critical parameters:

• Current Rating: 30A (exact match required)
• Voltage Rating: 600 VAC / 300 VDC (exact match required)
• Response Time: Slow Blow (exact match required)
• Fuse Class: CC (exact match required)
• Package / Case: 5AG, 10mm x 38mm Midget (exact match required)
• Physical Dimensions: 0.406" Dia x 1.500" L (exact match required)
• Mounting Type: Requires Holder (exact match required)

The KLDR030.TXP meets all substitution criteria as a direct equivalent. This part maintains identical electrical specifications, mechanical form factor, and approval certifications while offering active product status and current availability.

Parameter Comparison

Engineering Selection Recommendations

The KLDR030.TXP is the direct equivalent for KLDR030.T applications. Both parts carry identical electrical ratings, mechanical specifications, and regulatory certifications (CE, CSA, UL). The primary distinction is product status: KLDR030.T is obsolete while KLDR030.TXP maintains active status with current manufacturing and availability. For new designs and ongoing procurement, KLDR030.TXP is the appropriate selection. Both parts satisfy ROHS3 compliance requirements and are suitable for transformer protection circuits operating at 600 VAC / 300 VDC with 30A load conditions.

Frequently Asked Questions (FAQ)

Q: Can KLDR030.TXP be used as a direct replacement for KLDR030.T?

A: Yes. Both parts are identical in electrical specifications (30A, 600 VAC / 300 VDC, Slow Blow, CC Class), mechanical form factor (5AG, 10mm x 38mm), and regulatory approvals. KLDR030.TXP is the active production equivalent.

Q: What is the difference between KLDR030.T and KLDR030.TXP?

A: The parts are electrically and mechanically identical. The primary difference is product status: KLDR030.T is obsolete, while KLDR030.TXP is active. Packaging differs (KLDR030.T is unspecified; KLDR030.TXP is boxed), but this does not affect functional compatibility.

Q: Are both parts compatible with the same fuse holder?

A: Yes. Both parts use the 5AG, 10mm x 38mm (Midget) package and require a compatible cartridge fuse holder. Physical dimensions are identical (0.406" Dia x 1.500" L).

Q: Do both parts meet the same regulatory standards?

A: Yes. Both KLDR030.T and KLDR030.TXP carry CE, CSA, and UL approvals and are ROHS3 compliant.

Q: What is the breaking capacity of these fuses?

A: Both parts have a breaking capacity of 200kA at rated AC voltage (600 VAC) and 20kA at rated DC voltage (300 VDC).