TPS-50V Equivalent & Substitute Parts Reference

Part Overview

The TPS-50V is a 50A 170 VDC fuse cartridge manufactured by Eaton - Bussmann Electrical Division, part of the Telpower® TPS series. This through-hole mounted radial bend cylinder fuse is designed for telecom applications requiring reliable DC circuit protection at high voltage levels. The part maintains active product status with 727 units in current inventory. Equivalent substitute parts are identified to support procurement flexibility, supply chain continuity, and application-specific requirements where alternative manufacturers' components meet identical electrical and mechanical specifications.

Substiute Parts

TPS-50V

Eaton - Bussmann Electrical DivisionIn Stock: 793TPS-50V Datasheet

Current PartRFQ

0TLS050.TXLS

Littelfuse Inc.In Stock: 7440TLS050.TXLS Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TPS-50V are identified based on strict equivalence across the following critical parameters:

• Current Rating: 50A (exact match required)
• Voltage Rating (DC): 170 VDC (exact match required)
• Fuse Type: Cartridge (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Radial Bend Cylinder (exact match required)
• Breaking Capacity @ Rated Voltage: 100kA (exact match required)
• RoHS Compliance: Required for modern procurement standards

The substitute part 0TLS050.TXLS from Littelfuse Inc. meets all mandatory electrical and mechanical parameters, ensuring functional interchangeability within the specified application domain.

Parameter Comparison

Engineering Selection Recommendations

Both the TPS-50V and 0TLS050.TXLS maintain active product status with current manufacturing support and inventory availability. Selection between these parts should be based on the following factors:

Regulatory Compliance: The TPS-50V carries CE and UR approvals, while the 0TLS050.TXLS carries CE and cURus approvals. Verify that the target application's regulatory requirements align with the applicable certification body for your region.

RoHS Compliance: Both parts meet RoHS requirements. The Littelfuse part specifies ROHS3 compliance, representing the current RoHS 3 directive standard.

Physical Dimensions: Minor dimensional variations exist between the two parts. The TPS-50V measures 0.563" Dia x 0.874" H, while the 0TLS050.TXLS measures 0.562" Dia x 0.944" L. Verify PCB layout and mechanical clearances to ensure the substitute part fits within the available mounting space.

Response Characteristics: The 0TLS050.TXLS specifies Fast Blow response time. If the application requires specific response time characteristics, confirm compatibility with the circuit design.

Frequently Asked Questions (FAQ)

Q: Can the 0TLS050.TXLS be used as a direct replacement for the TPS-50V?

A: The 0TLS050.TXLS meets all critical electrical parameters (50A, 170 VDC, 100kA breaking capacity) and mounting requirements (through-hole, radial bend cylinder). Physical dimensions show minor variations (height/length difference of 0.070"). Confirm that available PCB mounting space accommodates the substitute part's dimensions before implementation.

Q: What are the key parameters that determine substitutability?

A: Current rating, voltage rating, fuse type, mounting type, package configuration, and breaking capacity must match exactly. Both parts satisfy these criteria. Secondary considerations include response time characteristics, regulatory approvals, and physical dimensions relative to the application's mechanical constraints.

Q: Are there compliance differences between the two parts?

A: Both parts are RoHS compliant and carry CE certification. The TPS-50V includes UR approval, while the 0TLS050.TXLS includes cURus approval. Verify that your application's regulatory requirements align with the applicable certification body.

Q: What should be considered when selecting between these two parts?

A: Evaluate regulatory requirements for your target market, available PCB mounting space relative to the dimensional specifications, response time requirements for your circuit design, and current inventory availability from your supplier.

Q: Are there any mechanical compatibility concerns?

A: The substitute part is 0.070" longer than the original part (0.944" vs 0.874"). Verify that the PCB layout and surrounding components provide sufficient clearance for the taller fuse cartridge.