KLDR.150T Equivalent & Substitute Parts

Part Overview

The KLDR.150T is a 150mA cartridge fuse rated for 600 VAC and 300 VDC operation, designed for transformer protection applications. This component is classified as obsolete, making identification of active equivalent parts essential for procurement and system maintenance. The POWR-GARD® KLDR series provides slow-blow response characteristics suitable for inductive load protection in industrial and commercial electrical systems.

Substiute Parts

KLDR.150T

Littelfuse Inc.In Stock: 1069KLDR.150T Datasheet

Current PartRFQ

KLDR.150TXP

Littelfuse Inc.In Stock: 785KLDR.150TXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KLDR.150T is based on electrical and mechanical parameter equivalence within the POWR-GARD® KLDR series. The substitute part KLDR.150TXP maintains identical specifications across all critical parameters: current rating (150mA), AC voltage rating (600 VAC), DC voltage rating (300 VDC), fuse class (CC), response time (Slow Blow), physical dimensions (10mm x 38mm), and breaking capacity (200kA AC, 20kA DC). Both parts carry equivalent regulatory approvals (CE, CSA, UL) and RoHS3 compliance. The primary distinction is product status: KLDR.150T is obsolete while KLDR.150TXP is active, with packaging differentiation (KLDR.150TXP supplied in box format).

Parameter Comparison

Engineering Selection Recommendations

The KLDR.150TXP is the direct active equivalent for the obsolete KLDR.150T. Both components satisfy identical electrical specifications, mechanical dimensions, and regulatory requirements. Selection of KLDR.150TXP is appropriate for new designs and replacement applications requiring 150mA protection at 600 VAC / 300 VDC with slow-blow characteristics. The active product status of KLDR.150TXP ensures ongoing availability and supply chain continuity. Both parts maintain CE, CSA, and UL certifications, confirming compliance with applicable safety standards for transformer protection circuits.

Frequently Asked Questions (FAQ)

Q: Can KLDR.150TXP directly replace KLDR.150T in existing applications? A: Yes. Both parts are electrically and mechanically identical across all specified parameters, including current rating, voltage ratings, fuse class, response time, physical dimensions, and breaking capacity. Direct substitution is valid for transformer protection circuits.

Q: What is the significance of the product status difference? A: KLDR.150T is classified as obsolete, indicating discontinued production. KLDR.150TXP is active, ensuring current manufacturing and availability. For new procurement and long-term supply requirements, KLDR.150TXP is the appropriate selection.

Q: Are the physical dimensions identical between both parts? A: Yes. Both KLDR.150T and KLDR.150TXP use the 5AG midget cartridge format with dimensions of 0.406" diameter by 1.500" length (10.30mm x 38.10mm), ensuring compatibility with standard 10mm x 38mm fuse holders.

Q: Do both parts carry the same regulatory approvals? A: Yes. Both KLDR.150T and KLDR.150TXP hold CE, CSA, and UL certifications and are ROHS3 compliant, meeting equivalent safety and environmental standards.

Q: What is the difference in packaging between these parts? A: KLDR.150T is supplied with standard packaging, while KLDR.150TXP is supplied in box format. This distinction does not affect electrical or mechanical performance.