TPS-20L Equivalent & Substitute Parts Reference

Part Overview

The TPS-20L is a 20A 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 requiring DC protection at 170 volts with a 20-ampere current rating. The part maintains Active product status with 860 units in current inventory. Equivalent and substitute parts are identified to support procurement flexibility, supply chain continuity, and system compatibility requirements where the original specification can be maintained.

Substiute Parts

TPS-20L

Eaton - Bussmann Electrical DivisionIn Stock: 906TPS-20L Datasheet

Current PartRFQ

0TLS020.TXL

Littelfuse Inc.In Stock: 11090TLS020.TXL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPS-20L is determined by strict equivalence across the following critical parameters:

• Current Rating: 20A (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 substitute part 0TLS020.TXL from Littelfuse Inc. satisfies all critical electrical and mechanical parameters. Both parts operate within the same voltage and current specifications, utilize identical mounting configurations, and maintain equivalent breaking capacity ratings. Both components are RoHS compliant and carry relevant regulatory approvals for telecom applications.

Parameter Comparison

Engineering Selection Recommendations

Both the TPS-20L and 0TLS020.TXL maintain Active product status and carry current regulatory certifications (CE and UR/cURus approvals). Selection between these components should be based on:

1. Physical space constraints: The TPS-20L measures 0.874" in length, while the 0TLS020.TXL measures 1.740" in length. Verify mounting cavity dimensions to ensure the selected part fits within available space.

2. Response time characteristics: The 0TLS020.TXL is specified as Fast Blow. If response time is a system requirement, confirm compatibility with circuit design specifications.

3. Regulatory compliance: Both parts satisfy CE requirements. The TPS-20L carries UR approval; the 0TLS020.TXL carries cURus approval. Verify which certification is required for your application jurisdiction.

4. Supply chain availability: Current inventory shows 860 units of TPS-20L and 1089 units of 0TLS020.TXL available.

Frequently Asked Questions (FAQ)

Q: Can the 0TLS020.TXL replace the TPS-20L in my circuit?

A: Yes, provided that the physical dimensions are compatible with your mounting cavity. The 0TLS020.TXL is 0.866" longer than the TPS-20L. Verify that your fuse holder accommodates the longer cartridge length before substitution.

Q: Are the electrical specifications identical?

A: Yes. Both parts are rated for 20A at 170 VDC with 100kA breaking capacity. They are electrically equivalent for DC protection applications.

Q: What is the difference in response time?

A: The TPS-20L response time is not specified in available documentation. The 0TLS020.TXL is specified as Fast Blow. If your circuit requires a specific response time characteristic, confirm that Fast Blow operation is compatible with your system design.

Q: Do both parts meet the same regulatory standards?

A: Both parts carry CE certification. The TPS-20L carries UR approval; the 0TLS020.TXL carries cURus approval. Verify which certification is required for your application region and end-use market.

Q: Are both parts RoHS compliant?

A: Yes. The TPS-20L is RoHS Compliant. The 0TLS020.TXL is ROHS3 Compliant. Both meet RoHS requirements.

Q: What is the primary consideration for substitution?

A: Physical dimensions are the primary consideration. Confirm that your fuse holder cavity can accommodate the 1.740" length of the 0TLS020.TXL if substituting from the shorter 0.874" TPS-20L.