KTK-R-2 Equivalent & Substitute Parts

Part Overview

The KTK-R-2 is a 2A 600VAC fast-blow cartridge fuse manufactured by Eaton - Bussmann Electrical Division, part of the Limitron™ KTK-R series. This fuse is designed for electrical and industrial applications requiring cartridge-style protection in a 5AG (10mm x 38mm midget) package format. The part is currently active in production with 729 units in stock. Substitute parts are identified when equivalent electrical ratings, mechanical dimensions, and approval certifications align with the original specification.

Substiute Parts

KTK-R-2

Eaton - Bussmann Electrical DivisionIn Stock: 814KTK-R-2 Datasheet

Current PartRFQ

0KLK002.T

Littelfuse Inc.In Stock: 20390KLK002.T Datasheet

DirectRFQ

KLKR002.T

Littelfuse Inc.In Stock: 928KLKR002.T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KTK-R-2 is determined by the following criteria:

• Current Rating: Must be 2A
• Voltage Rating - AC: Must be 600 VAC minimum
• Fuse Type: Must be Cartridge
• Package / Case: Must be 5AG, 10mm x 38mm (Midget)
• Physical Dimensions: Must be 0.406" Dia x 1.500" L (10.30mm x 38.10mm)
• Response Time: Must be Fast Blow
• Approval Agencies: Must include CE, CSA, and UL certifications

Two substitute parts meet these criteria: KLKR002.T (Littelfuse POWR-GARD® KLKR series) and 0KLK002.T (Littelfuse POWR-GARD® KLK series). Both maintain identical AC voltage ratings, current ratings, physical dimensions, and fast-blow response characteristics. Differences in DC voltage ratings and breaking capacity do not affect AC-only applications.

Parameter Comparison

Engineering Selection Recommendations

Both KLKR002.T and 0KLK002.T are qualified substitutes for the KTK-R-2 based on matching electrical ratings, mechanical compatibility, and regulatory certifications.

KLKR002.T (Littelfuse POWR-GARD® KLKR series) maintains identical AC breaking capacity (200kA) and CC class rating as the original KTK-R-2. This part is supplied in box packaging with 867 units in stock.

0KLK002.T (Littelfuse POWR-GARD® KLK series) provides equivalent AC performance with additional QPL approval certification. This part is supplied in bulk packaging with 2000 units in stock and includes higher DC voltage capability (500 VDC versus 300 VDC).

Both parts are active products with ROHS3 compliance and REACH unaffected status. Selection between substitutes depends on application requirements, packaging preference, and inventory availability.

Frequently Asked Questions (FAQ)

Q: Can KLKR002.T and 0KLK002.T be used interchangeably with KTK-R-2?

A: Both parts are substitutes for AC applications at 2A 600VAC. They share identical current ratings, AC voltage ratings, physical dimensions (5AG 10mm x 38mm), fast-blow response, and required certifications (CE, CSA, UL). Substitution is valid for applications matching the original specification.

Q: What is the difference between KLKR002.T and 0KLK002.T?

A: Both are 2A 600VAC fast-blow cartridge fuses in 5AG package. KLKR002.T has 300 VDC rating and 200kA AC breaking capacity with CC class. 0KLK002.T has 500 VDC rating and 100kA AC breaking capacity without specified class. For AC-only applications, both are equivalent. DC applications require evaluation of the specific voltage requirement.

Q: Does packaging format affect substitution eligibility?

A: Packaging format (bulk versus box) does not affect electrical or mechanical compatibility. KLKR002.T is supplied in box packaging; 0KLK002.T is supplied in bulk packaging. Selection may depend on procurement and storage requirements.

Q: Are all three parts ROHS3 compliant?

A: Yes. KTK-R-2, KLKR002.T, and 0KLK002.T are all ROHS3 compliant and REACH unaffected, meeting current environmental regulations.

Q: What certifications are required for substitution?

A: All three parts carry CE, CSA, and UL certifications. 0KLK002.T additionally carries QPL certification. For applications requiring specific certifications, verify that the substitute meets all required approval agencies.