KTK-1/10 Equivalent & Substitute Parts

Part Overview

The KTK-1/10 is a 100mA fast-blow cartridge fuse rated for 600 VAC operation, manufactured by Eaton - Bussmann Electrical Division. This fuse is designed for use in electrical and industrial applications requiring a holder-mounted cartridge fuse in the 5AG (10mm x 38mm midget) package format. The part maintains active product status with 811 units currently in stock. Substitute parts are identified when equivalent electrical ratings, mechanical dimensions, and approval certifications align with the original specification, enabling direct replacement in applications where component availability or supply chain considerations necessitate alternative sourcing.

Substiute Parts

KTK-1/10

Eaton - Bussmann Electrical DivisionIn Stock: 890KTK-1/10 Datasheet

Current PartRFQ

KLKR.100T

Littelfuse Inc.In Stock: 1052KLKR.100T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KTK-1/10 is determined by strict alignment of the following critical parameters:

• Current Rating: 100mA (exact match required)
• Voltage Rating - AC: 600 VAC (exact match required)
• Response Time: Fast Blow (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)
• Fuse Type: Cartridge (exact match required)
• Mounting Type: Requires Holder (exact match required)

The KLKR.100T from Littelfuse Inc. qualifies as a direct substitute because it meets all mandatory electrical and mechanical parameters. Additional capabilities such as DC voltage rating (300 VDC) and enhanced breaking capacity do not disqualify substitution; they represent extended functionality that maintains backward compatibility with the original application requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the KTK-1/10 and KLKR.100T maintain active product status and carry CSA and UL certifications, meeting the regulatory requirements for electrical and industrial applications. The KLKR.100T provides additional compliance coverage through CE certification and enhanced breaking capacity specifications. Selection between these parts should be based on supply chain availability, inventory position, and any application-specific requirements for DC voltage operation. Both parts are RoHS compliant and suitable for direct substitution in 600 VAC, 100mA fast-blow cartridge fuse applications requiring the 5AG midget package format.

Frequently Asked Questions (FAQ)

Q: Can the KLKR.100T replace the KTK-1/10 in all applications?

A: Yes. The KLKR.100T meets all mandatory electrical and mechanical parameters of the KTK-1/10, including current rating, AC voltage rating, response time, package format, and physical dimensions. Both parts are certified by CSA and UL for electrical and industrial applications.

Q: What is the significance of the DC voltage rating on the KLKR.100T?

A: The KLKR.100T includes a 300 VDC rating, which the KTK-1/10 does not specify. This extended capability does not affect AC-only applications and represents additional functionality that maintains full backward compatibility.

Q: Are the physical dimensions identical?

A: Yes. Both parts use the 5AG (10mm x 38mm midget) package format with identical dimensions of 0.406" Dia x 1.500" L (10.30mm x 38.10mm). Both require a compatible fuse holder for installation.

Q: What is the difference in breaking capacity?

A: The KTK-1/10 has a breaking capacity of 100kA at rated voltage. The KLKR.100T provides 200kA AC and 20kA DC breaking capacity. Higher breaking capacity indicates enhanced fault protection capability and does not prevent substitution.

Q: Are both parts RoHS compliant?

A: Yes. The KTK-1/10 is RoHS Compliant, and the KLKR.100T is ROHS3 Compliant. Both meet environmental compliance requirements for electrical component manufacturing.

Q: What certifications apply to each part?

A: The KTK-1/10 carries CSA and UL certifications. The KLKR.100T carries CE, CSA, and UL certifications, providing broader regulatory coverage for international applications.