KTU-5000 Equivalent & Substitute Parts Reference

Part Overview

The KTU-5000 is a 5kA 600 VAC cylindrical cartridge fuse manufactured by Eaton - Bussmann Electrical Division, part of the Limitron™ KTU series. This fast-blow fuse cartridge is designed for bolt mount applications in electrical and industrial systems with a breaking capacity of 200kA at rated voltage. The product is currently obsolete, making identification of equivalent substitute parts essential for system maintenance and component replacement in existing installations.

Substiute Parts

KTU-5000

Eaton - Bussmann Electrical DivisionIn Stock: 954KTU-5000 Datasheet

Current PartRFQ

KLPC5000X

Littelfuse Inc.In Stock: 824KLPC5000X Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KTU-5000 is determined by the following critical parameters that must remain consistent:

• Current Rating: 5kA
• Voltage Rating - AC: 600 VAC
• Fuse Type: Cartridge
• Mounting Type: Bolt Mount
• Class: L
• Package / Case: Cylindrical, Blade Terminal (Bolt)
• Approval Agency: CE, CSA, UL

The KLPC5000X from Littelfuse Inc. qualifies as a substitute based on matching these core electrical and mechanical specifications. Variations in response time (fast blow vs. slow blow), additional DC voltage rating capability, and dimensional differences within acceptable tolerance ranges do not preclude substitution when the primary AC electrical parameters and mounting configuration align.

Parameter Comparison

Engineering Selection Recommendations

The KLPC5000X is an active product substitute for the obsolete KTU-5000. Both components maintain identical current ratings (5kA), AC voltage ratings (600 VAC), fuse class (L), and bolt mount cylindrical configuration. Both hold equivalent international approvals (CE, CSA, UL), ensuring compliance with regulatory requirements for electrical and industrial applications.

The KLPC5000X offers extended functionality through DC voltage rating capability (480 VDC) and higher DC breaking capacity (300kA), which provides additional operational flexibility without compromising AC performance specifications. The dimensional difference reflects modern manufacturing standards and does not affect electrical compatibility in bolt mount installations.

Frequently Asked Questions (FAQ)

Q: Can the KLPC5000X directly replace the KTU-5000 in existing installations?

A: Yes. Both components share identical current ratings (5kA), AC voltage ratings (600 VAC), fuse class (L), mounting type (bolt mount), and cylindrical blade terminal configuration. Both hold CE, CSA, and UL approvals.

Q: What is the significance of the response time difference (fast blow vs. slow blow)?

A: Response time classification indicates the fuse's operating characteristics under fault conditions. This parameter is provided in the specifications and should be evaluated against the specific circuit protection requirements of the application.

Q: Are there dimensional compatibility concerns?

A: The KLPC5000X is slightly larger (7.126" Dia x 4.000" L) compared to the KTU-5000 (6.250" Dia x 3.750" L). Physical space availability in the bolt mount installation must be confirmed before substitution.

Q: Does the additional DC voltage rating of the KLPC5000X affect AC-only applications?

A: No. The KLPC5000X maintains full AC performance specifications identical to the KTU-5000. The DC rating represents additional capability that does not impact AC circuit protection performance.

Q: Are both components RoHS and REACH compliant?

A: The KTU-5000 is REACH Unaffected. The KLPC5000X is ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory standards.