GMT-3A Equivalent & Substitute Parts Reference

Part Overview

The GMT-3A is an indicating fuse manufactured by Eaton - Bussmann Electrical Division, rated for 3A at 125 VAC / 60 VDC with fast-blow response characteristics. This component is designed for telecom applications and requires an external fuse holder for installation. The part maintains active product status with full RoHS compliance, making it suitable for current procurement and deployment in regulated environments.

Substitute parts are identified to address inventory availability, regional sourcing requirements, or specific compliance certifications while maintaining identical electrical and mechanical performance parameters.

Substiute Parts

GMT-3A

Eaton - Bussmann Electrical DivisionIn Stock: 905GMT-3A Datasheet

Current PartRFQ

BK/GMT-3A

Eaton - Bussmann Electrical DivisionIn Stock: 3370BK/GMT-3A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the GMT-3A is determined by strict equivalence across the following critical parameters:

• Current Rating: 3A (exact match required)
• Voltage Rating: 125 VAC / 60 VDC (exact match required)
• Response Time: Fast Blow (exact match required)
• Fuse Type: Indicating Fuse (exact match required)
• Physical Dimensions: 0.688" L x 0.127" W x 0.810" H (exact match required)
• Mounting Configuration: Requires Holder (exact match required)
• Breaking Capacity: 300A AC / 450A DC (exact match required)

The BK/GMT-3A variant meets all substitution criteria as a direct equivalent part from the same manufacturer series, with identical electrical ratings, response characteristics, and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

Both GMT-3A and BK/GMT-3A are active products from Eaton - Bussmann Electrical Division with full regulatory compliance. The BK/GMT-3A variant carries ROHS3 certification, providing enhanced compliance documentation for applications requiring extended environmental standards. Both parts maintain UR approval and identical electrical performance specifications.

Selection between these parts should be based on inventory availability, regional sourcing preferences, or specific compliance documentation requirements for your application. No functional or electrical performance difference exists between the two variants.

Frequently Asked Questions (FAQ)

Q: Can BK/GMT-3A be used as a direct replacement for GMT-3A?

A: Yes. Both parts are electrically and mechanically identical, with matching current ratings (3A), voltage ratings (125 VAC / 60 VDC), response time (fast blow), and physical dimensions. Both require an external fuse holder for installation.

Q: What is the difference between GMT-3A and BK/GMT-3A?

A: The primary difference is the RoHS certification variant. GMT-3A carries RoHS Compliant status, while BK/GMT-3A carries ROHS3 Compliant status. Both parts meet the same electrical and mechanical specifications and are manufactured by the same company.

Q: Are these parts interchangeable in existing designs?

A: Yes. Both parts have identical dimensions (0.688" L x 0.127" W x 0.810" H), identical electrical ratings, and identical mounting requirements. No design modifications are necessary for substitution.

Q: What holder is required for these fuses?

A: Both GMT-3A and BK/GMT-3A require an external fuse holder compatible with the GMT series and the specified physical dimensions. Consult the fuse holder documentation for compatibility confirmation.

Q: Are these parts suitable for telecom applications?

A: Yes. Both parts are rated for telecom applications with UR approval and fast-blow response characteristics appropriate for circuit protection in telecommunications equipment.

Q: What is the breaking capacity of these fuses?

A: Both parts have a breaking capacity of 300A at rated AC voltage (125 VAC) and 450A at rated DC voltage (60 VDC).