KTK-6 Equivalent & Substitute Parts

Part Overview

The KTK-6 is a 6A 600VAC fast-blow fuse cartridge manufactured by Eaton - Bussmann Electrical Division. This component is designed for electrical and industrial applications requiring cartridge-style fuse protection in holder-based installations. The part maintains active product status with 942 units in current inventory. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design requirements permit equivalent electrical and mechanical specifications.

Substiute Parts

KTK-6

Eaton - Bussmann Electrical DivisionIn Stock: 973KTK-6 Datasheet

Current PartRFQ

KLKR006.T

Littelfuse Inc.In Stock: 753KLKR006.T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KTK-6 is determined by the following critical parameters:

• Current Rating: 6A (exact match required)
• Voltage Rating - AC: 600 VAC (exact match required)
• Fuse Type: Cartridge (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)
• Mounting Type: Requires Holder (exact match required)

The substitute part KLKR006.T meets all critical electrical and mechanical parameters. Additional capabilities in the substitute part (300 VDC rating, higher breaking capacity, CC class designation) do not prevent substitution and represent enhanced specifications within the same form factor and holder compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the KTK-6 and KLKR006.T are active products with current manufacturing status. Selection between these parts is based on availability and application requirements:

The KTK-6 is suitable for applications requiring CSA and UL certification with 600 VAC AC-only operation and 100kA breaking capacity.

The KLKR006.T provides equivalent AC performance with additional certifications (CE) and enhanced specifications including 300 VDC capability and 200kA AC breaking capacity. This part is suitable for applications that may require dual-voltage operation or higher fault current ratings within the same physical form factor.

Both parts are ROHS3 compliant and maintain identical mechanical compatibility with standard 5AG cartridge fuse holders.

Frequently Asked Questions (FAQ)

Q: Can KLKR006.T replace KTK-6 in an existing installation?

A: Yes. Both parts share identical current rating (6A), AC voltage rating (600 VAC), fuse type (cartridge), response time (fast blow), and physical dimensions (5AG, 10mm x 38mm). Both require the same holder type and are mechanically and electrically interchangeable for AC applications rated at 600 VAC.

Q: What is the difference in breaking capacity between these parts?

A: The KTK-6 has a breaking capacity of 100kA at rated voltage. The KLKR006.T has a breaking capacity of 200kA AC at rated voltage. Higher breaking capacity indicates the fuse can safely interrupt higher fault currents. The KLKR006.T provides enhanced fault current handling within the same package.

Q: Does the KLKR006.T's 300 VDC rating affect AC-only applications?

A: No. The 300 VDC rating is an additional capability that does not impact AC performance. For AC-only applications at 600 VAC, both parts perform identically. The KLKR006.T simply offers expanded voltage range flexibility.

Q: Are both parts RoHS compliant?

A: Yes. Both the KTK-6 and KLKR006.T are ROHS3 compliant.

Q: What certifications apply to each part?

A: The KTK-6 carries CSA and UL certifications. The KLKR006.T carries CE, CSA, and UL certifications. Both meet North American standards (CSA, UL). The KLKR006.T additionally meets European standards (CE).