TPS-5L Equivalent & Substitute Parts Reference

Part Overview

The Eaton Bussmann TPS-5L is a 5A 170 VDC cylindrical cartridge fuse designed for bolt mount applications in telecom systems. This part is classified as obsolete, making equivalent substitutes necessary for ongoing maintenance and new designs. The TPS-5L belongs to the Telpower® TPS series and carries CE and UR approvals with a 100kA breaking capacity at rated voltage.

Substiute Parts

TPS-5L

Eaton - Bussmann Electrical DivisionIn Stock: 971TPS-5L Datasheet

Current PartRFQ

0TLS005.TXL

Littelfuse Inc.In Stock: 8740TLS005.TXL Datasheet

SimilarRFQ

0TLS005.TXLB

Littelfuse Inc.In Stock: 6740TLS005.TXLB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TPS-5L is determined by strict equivalence across the following electrical and mechanical parameters:

• Current Rating: 5A (exact match required)
• Voltage Rating: 170 VDC (exact match required)
• Fuse Type: Cartridge (exact match required)
• Mounting Type: Bolt Mount (exact match required)
• Package / Case: Cylindrical, Blade Terminal (Bolt) (exact match required)
• Breaking Capacity: 100kA (exact match required)

The two substitute parts listed—0TLS005.TXL and 0TLS005.TXLB—both meet these core electrical and mechanical requirements. Both are manufactured by Littelfuse Inc. under the POWR-GARD® TLS series and maintain active product status with current availability.

Parameter Comparison

Engineering Selection Recommendations

Both Littelfuse POWR-GARD® TLS substitutes (0TLS005.TXL and 0TLS005.TXLB) satisfy the core electrical requirements and mechanical compatibility for the obsolete TPS-5L. Both parts maintain active product status with current manufacturing and inventory availability.

The primary distinction between the two Littelfuse options is physical length: 0TLS005.TXL measures 1.740" (44.20mm) while 0TLS005.TXLB measures 1.580" (40.13mm). The original TPS-5L measures 0.874" (22.20mm). Physical envelope constraints in the application must be evaluated to determine which substitute accommodates the installation space.

Both substitutes carry CE and cURus certifications, providing regulatory compliance for telecom applications. Both are ROHS3 compliant, meeting current environmental standards. The response time specification (Fast Blow) is documented for both Littelfuse parts but not specified for the original TPS-5L.

Frequently Asked Questions (FAQ)

Q: Can 0TLS005.TXL and 0TLS005.TXLB be used interchangeably with TPS-5L?

A: Both parts meet the electrical and mechanical substitution criteria (5A, 170 VDC, cartridge type, bolt mount, 100kA breaking capacity). Physical length differences must be verified against available mounting space in the application.

Q: What is the significance of the length difference between the two Littelfuse substitutes?

A: 0TLS005.TXL is 1.740" long while 0TLS005.TXLB is 1.580" long. Both exceed the original TPS-5L length of 0.874". Installation clearance and mounting geometry must be confirmed before selection.

Q: Are the Littelfuse substitutes compliant with current standards?

A: Both 0TLS005.TXL and 0TLS005.TXLB carry CE and cURus certifications and are ROHS3 compliant, meeting current regulatory requirements for telecom applications.

Q: Why is the TPS-5L listed as obsolete?

A: The TPS-5L is no longer in active production. The Littelfuse POWR-GARD® TLS series provides functionally equivalent alternatives with current manufacturing support.

Q: Does response time affect substitution compatibility?

A: Both Littelfuse substitutes are specified as Fast Blow. The original TPS-5L response time is not documented in the provided specifications. Application requirements for response time characteristics must be confirmed independently.