TPL-BF 150A 170VDC Fuse Cartridge Equivalent & Substitute Parts

Part Overview

The TPL-BF is an active production fuse cartridge manufactured by Eaton - Bussmann Electrical Division, rated for 150A at 170VDC with bolt mount configuration. This component is designed for telecom applications requiring high breaking capacity (100kA) in a cylindrical form factor. Substitute parts are identified based on matching electrical ratings, mechanical compatibility, and approval certifications to ensure direct functional equivalence in system designs.

Substiute Parts

TPL-BF

Eaton - Bussmann Electrical DivisionIn Stock: 912TPL-BF Datasheet

Current PartRFQ

L17T150.T

Littelfuse Inc.In Stock: 733L17T150.T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TPL-BF are qualified based on the following criteria:

• Current Rating: Exact match at 150A
• Voltage Rating (DC): Exact match at 170VDC
• Fuse Type: Cartridge configuration
• Mounting Type: Bolt mount with blade terminal
• Physical Dimensions: Compatible cylindrical form factor (1.000" Dia x ~1.160" L)
• Breaking Capacity: Minimum 100kA at rated voltage
• Approval Certifications: CE and UR certifications required for telecom applications

The L17T150.T from Littelfuse Inc. meets all substitution criteria and is classified as an equivalent part.

Parameter Comparison

Engineering Selection Recommendations

Both the TPL-BF and L17T150.T are active production components with equivalent electrical and mechanical specifications. Selection between these parts should be based on:

• Certification Requirements: The L17T150.T carries additional CSA certification beyond the CE and UR certifications present on both parts, providing broader regulatory coverage for North American applications.
• RoHS Compliance: Both parts meet RoHS requirements; the L17T150.T specifies ROHS3 compliance.
• Dimensional Tolerance: Physical dimensions are within 0.003" (0.076mm) difference in length, maintaining mechanical compatibility in bolt mount applications.
• Availability and Packaging: TPL-BF is available in bulk packaging (863 pcs in stock); L17T150.T is available in box packaging (664 pcs in stock).

Frequently Asked Questions (FAQ)

Q: Can the L17T150.T directly replace the TPL-BF in existing designs?

A: Yes. Both parts share identical current ratings (150A), voltage ratings (170VDC), fuse type (cartridge), mounting configuration (bolt mount), and breaking capacity (100kA). Physical dimensions are compatible within standard mechanical tolerances for cylindrical blade terminal cartridges.

Q: What is the significance of the "Fast Blow" response time specification on the L17T150.T?

A: The L17T150.T specifies Fast Blow response time. The TPL-BF does not provide response time data in available documentation. Confirm response time requirements for your specific application before substitution if response characteristics are critical to circuit protection timing.

Q: Are there differences in approval certifications between these parts?

A: The TPL-BF carries CE and UR certifications. The L17T150.T carries CE, CSA, and UR certifications. The additional CSA certification on the L17T150.T extends regulatory acceptance to Canadian markets. Both meet the minimum certification requirements for telecom applications.

Q: Do packaging differences affect technical compatibility?

A: No. Packaging format (bulk vs. box) does not affect electrical or mechanical performance. Selection should be based on procurement and inventory management requirements.

Q: What dimensional tolerance should be considered for mechanical fit?

A: The length difference between parts is 0.003" (0.076mm), which is within standard mechanical tolerances for bolt mount cartridge fuse holders. Verify holder specifications if dimensional precision is critical to your application.