TR125R Equivalent & Substitute Parts

Part Overview

The TR125R is a 250V 125A fuse cartridge manufactured by Mersen USA Newburyport-MA L.L.C. This component is classified as an uncategorized electrical protection device with dimensions of 7 1/8" x 1 9/10" in a box package format. The part maintains Active product status and is ROHS3 compliant. Equivalent substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when inventory requirements necessitate alternative suppliers.

Substiute Parts

TR125R

Mersen USA Newburyport-MA L.L.C.In Stock: 1164TR125R Datasheet

Current PartRFQ

FRN-R-125

Eaton - Bussmann Electrical DivisionIn Stock: 784FRN-R-125 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TR125R is determined by the following critical parameters:

• Current Rating: 125A (exact match required)
• Voltage Rating: 250V AC minimum (250 VAC / 125 VDC acceptable)
• Form Factor: Cartridge fuse configuration
• Compliance: ROHS and international certifications (CE, CSA, UL)
• Regulatory Classification: ECCN EAR99, HTSUS 8536.10.0040

The FRN-R-125 manufactured by Eaton - Bussmann Electrical Division meets these substitution criteria with matching electrical ratings and regulatory classifications. Both parts function as fuse cartridges rated for 125A at 250V AC, with equivalent compliance certifications and tariff classifications.

Parameter Comparison

Engineering Selection Recommendations

Both the TR125R and FRN-R-125 are Active status products with equivalent regulatory compliance. The TR125R is supplied in box packaging with 1080 pieces in stock inventory. The FRN-R-125 is supplied in bulk packaging with 712 pieces in stock inventory.

Selection between these parts should be based on:

• Packaging requirements (box versus bulk)
• Inventory availability and lead time
• Supplier preference and procurement agreements
• Installation requirements (the FRN-R-125 requires a holder for installation)

Both parts carry identical ECCN and HTSUS classifications, confirming equivalent regulatory treatment for export and tariff purposes.

Frequently Asked Questions (FAQ)

Q: Can the FRN-R-125 directly replace the TR125R?

A: Both parts are 125A cartridge fuses rated for 250V AC operation and share identical electrical specifications for this voltage and current combination. The FRN-R-125 requires a holder for installation, whereas the TR125R packaging and mounting configuration should be verified against your specific application requirements.

Q: What are the key parameters that determine substitution eligibility?

A: Current rating (125A), voltage rating (250V AC minimum), cartridge form factor, and regulatory compliance (ROHS, EAR99, HTSUS 8536.10.0040) are the determining factors. Both parts meet these criteria.

Q: Are there packaging differences between these parts?

A: Yes. The TR125R is supplied in box packaging, while the FRN-R-125 is supplied in bulk packaging. This may affect handling, storage, and installation procedures.

Q: Do both parts have equivalent international certifications?

A: Both parts are ROHS compliant and classified under identical ECCN and HTSUS codes. The FRN-R-125 carries CE, CSA, and UL approvals. Verify that all required certifications for your application are present on the selected part.

Q: What is the difference in breaking capacity between these parts?

A: The FRN-R-125 specifies a breaking capacity of 200kA AC and 20kA DC. The TR125R breaking capacity is not provided in the available technical data. Confirm breaking capacity requirements for your specific application before selection.