TPS-15L Equivalent & Substitute Parts Reference

Part Overview

The TPS-15L is a 15A 170 VDC fuse cartridge manufactured by Eaton - Bussmann Electrical Division, part of the Telpower® TPS series. This component is designed for bolt mount applications in telecom systems with a cylindrical blade terminal configuration. The product is currently obsolete, making identification of functionally equivalent alternatives essential for system maintenance, repair, and component sourcing in legacy telecom installations.

Substiute Parts

TPS-15L

Eaton - Bussmann Electrical DivisionIn Stock: 786TPS-15L Datasheet

Current PartRFQ

0TLS015.TXL

Littelfuse Inc.In Stock: 10950TLS015.TXL Datasheet

SimilarRFQ

0TLS015.TXLB

Littelfuse Inc.In Stock: 9300TLS015.TXLB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPS-15L is determined by strict equivalence across the following critical parameters:

• Current Rating: 15A (exact match required)
• Voltage Rating: 170 VDC (exact match required)
• Fuse Type: Cartridge (exact match required)
• Mounting Type: Bolt Mount (exact match required)
• Package Configuration: Cylindrical, Blade Terminal (Bolt) (exact match required)
• Breaking Capacity: 100kA (exact match required)
• Diameter: 0.563" / 14.30mm (exact match required)

The two substitute parts identified—0TLS015.TXL and 0TLS015.TXLB—both satisfy these core electrical and mechanical parameters. Both are manufactured by Littelfuse Inc. as part of the POWR-GARD® TLS series and maintain active product status with current availability.

Parameter Comparison

Engineering Selection Recommendations

Both 0TLS015.TXL and 0TLS015.TXLB meet the electrical and mechanical substitution criteria for the obsolete TPS-15L. Selection between these two Littelfuse alternatives depends on physical space constraints within the host equipment:

The 0TLS015.TXLB offers a shorter profile at 1.580" (40.13mm) length, providing the closest dimensional approximation to the original TPS-15L at 0.874" (22.20mm). The 0TLS015.TXL measures 1.740" (44.20mm) in length.

Both substitute parts carry active product status with current manufacturing and inventory availability. Both hold CE and cURus certifications, exceeding the original UR certification scope. Both are ROHS3 compliant, addressing modern environmental and regulatory requirements not specified for the obsolete original part.

Frequently Asked Questions (FAQ)

Q: Can 0TLS015.TXL and 0TLS015.TXLB be used interchangeably with TPS-15L?

A: Both parts satisfy the core electrical parameters (15A, 170 VDC, 100kA breaking capacity) and mechanical requirements (bolt mount, cylindrical blade terminal, 0.563" diameter). Selection depends on available mounting space, as the substitute parts are longer than the original.

Q: What is the significance of the length difference between TPS-15L and the substitute parts?

A: The TPS-15L measures 0.874" (22.20mm) in length, while 0TLS015.TXLB measures 1.580" (40.13mm) and 0TLS015.TXL measures 1.740" (44.20mm). Physical space availability in the equipment housing determines which substitute is suitable. Verify clearance before installation.

Q: Are the substitute parts certified for the same applications?

A: Both substitute parts carry CE and cURus certifications, which cover the telecom application domain. The original TPS-15L held CE and UR certifications. The cURus certification on the substitutes provides equivalent or broader approval coverage.

Q: What is the difference between 0TLS015.TXL and 0TLS015.TXLB?

A: Both are Littelfuse POWR-GARD® TLS series 15A 170 VDC cartridge fuses with identical electrical specifications. The primary difference is physical length: 0TLS015.TXLB is 1.580" (40.13mm) and 0TLS015.TXL is 1.740" (44.20mm). Both are fast-blow response fuses.

Q: Is RoHS compliance a factor in substitution?

A: The substitute parts are ROHS3 compliant, while the original TPS-15L RoHS status is not specified. For applications requiring RoHS compliance, the Littelfuse alternatives satisfy this requirement.