KTU-3000 Equivalent & Substitute Parts

Part Overview

The KTU-3000 is a 3kA 600 VAC cylindrical cartridge fuse manufactured by Eaton - Bussmann Electrical Division under the Limitron™ KTU series. This fast-blow fuse cartridge is designed for bolt mount applications in electrical and industrial systems. The part is currently active in production with 1119 units in stock. Substitute parts are identified when equivalent electrical ratings, mechanical compatibility, and regulatory approvals align with the original specification, enabling component interchangeability in system designs.

Substiute Parts

KTU-3000

Eaton - Bussmann Electrical DivisionIn Stock: 1157KTU-3000 Datasheet

Current PartRFQ

KLPC3000X

Littelfuse Inc.In Stock: 1014KLPC3000X Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KTU-3000 is determined by the following critical parameters:

• Current Rating: 3kA (must match exactly)
• Voltage Rating - AC: 600 VAC (must match exactly)
• Fuse Class: L (must match exactly)
• Mounting Type: Bolt Mount (must match exactly)
• Package / Case: Cylindrical, Blade Terminal (Bolt) (must match exactly)
• Approval Agency: CE, CSA, UL certifications required
• RoHS Compliance: Required

The KLPC3000X from Littelfuse Inc. meets these core electrical and mechanical requirements. While the KLPC3000X exhibits differences in response time (slow blow vs. fast blow) and includes additional DC voltage rating capability (480 VDC), it maintains compatibility with the primary AC application parameters and regulatory framework of the KTU-3000.

Parameter Comparison

Engineering Selection Recommendations

Both the KTU-3000 and KLPC3000X are active production components with equivalent regulatory certifications (CE, CSA, UL) and RoHS compliance status. Selection between these parts is based on application-specific requirements:

The KTU-3000 is specified for fast-blow response characteristics in 600 VAC systems requiring rapid fault isolation. The KLPC3000X provides equivalent AC performance with extended DC voltage capability (480 VDC) and slow-blow response, suitable for applications requiring delayed trip characteristics or dual AC/DC system compatibility. Physical dimension variance (3.750" vs. 4.000" length) must be verified against mounting cavity constraints. Both parts maintain identical current rating (3kA), voltage rating (600 VAC), fuse class (L), and bolt mount configuration, ensuring mechanical and electrical interchangeability within the specified parameter envelope.

Frequently Asked Questions (FAQ)

Q: Can KLPC3000X replace KTU-3000 in all applications?

A: Electrical and mechanical compatibility is confirmed for 600 VAC, 3kA, Class L bolt mount applications. However, response time differs (slow blow vs. fast blow). Verify that the application circuit design accommodates slow-blow characteristics before substitution. Physical length difference (3.750" vs. 4.000") must be confirmed against mounting cavity dimensions.

Q: What does "Class L" fuse classification mean?

A: Class L fuses are cylindrical cartridge fuses rated for 600 VAC with a 200kA breaking capacity at rated voltage. This classification defines the physical envelope, electrical ratings, and performance characteristics. Both KTU-3000 and KLPC3000X conform to Class L specifications.

Q: Are both parts RoHS compliant?

A: Yes. KTU-3000 is RoHS Compliant. KLPC3000X is ROHS3 Compliant. Both meet current RoHS requirements for electrical and electronic equipment.

Q: What is the significance of the DC voltage rating on KLPC3000X?

A: The KLPC3000X includes a 480 VDC rating, enabling use in dual AC/DC systems. The KTU-3000 specification does not include DC voltage rating. If DC operation is required, KLPC3000X provides extended capability; if DC operation is not required, this parameter does not affect AC-only application compatibility.

Q: How do fast-blow and slow-blow response times affect circuit protection?

A: Fast-blow fuses (KTU-3000) interrupt circuits rapidly upon overcurrent, providing immediate protection for sensitive components. Slow-blow fuses (KLPC3000X) tolerate temporary inrush currents before interruption, suitable for circuits with startup transients. Application circuit design determines which response characteristic is appropriate.

Q: Are both parts available in equivalent packaging quantities?

A: KTU-3000 is supplied in Bulk packaging (1119 units in stock). KLPC3000X is supplied in Box packaging (940 units in stock). Packaging format does not affect electrical or mechanical compatibility; it reflects supplier distribution methods.