GMT-1A Equivalent & Substitute Parts Reference

Part Overview

The GMT-1A is an indicating fuse manufactured by Eaton - Bussmann Electrical Division, designed for telecom applications requiring fast-blow protection at 1A capacity. This fuse operates at 125 VAC / 60 VDC and includes an alarm indicator feature, requiring a dedicated holder for installation. The part maintains active product status with robust inventory availability, making it a standard component in telecom circuit protection systems.

Substitute parts are identified to provide equivalent functional performance when the primary part number is unavailable or when alternative sourcing is required for supply chain optimization.

Substiute Parts

GMT-1A

Eaton - Bussmann Electrical DivisionIn Stock: 1006GMT-1A Datasheet

Current PartRFQ

BK/GMT-1A

Eaton - Bussmann Electrical DivisionIn Stock: 1445BK/GMT-1A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the GMT-1A is determined by strict equivalence across the following critical parameters:

• Current Rating: 1A (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)
• Mounting Type: Requires Holder (exact match required)
• Breaking Capacity: 300A AC, 450A DC (exact match required)
• Physical Dimensions: 0.688" L x 0.127" W x 0.810" H (exact match required)
• Approval Agency: UR certification (exact match required)

The BK/GMT-1A meets all substitution criteria as a direct equivalent part from the same manufacturer and series.

Parameter Comparison

Engineering Selection Recommendations

Both GMT-1A and BK/GMT-1A are active products from Eaton - Bussmann Electrical Division with full UR approval certification. The BK/GMT-1A variant carries ROHS3 compliance status, providing enhanced environmental regulatory alignment compared to the standard RoHS Compliant designation of the GMT-1A. Both parts are functionally identical across all electrical and mechanical parameters critical to telecom circuit protection applications.

Selection between these parts should be based on supply chain availability and compliance requirements specific to the end application. The BK/GMT-1A is suitable for applications requiring ROHS3 compliance documentation.

Frequently Asked Questions (FAQ)

Q: Can BK/GMT-1A be used as a direct replacement for GMT-1A in existing designs?

A: Yes. Both parts are electrically and mechanically identical, with matching current ratings (1A), voltage ratings (125 VAC / 60 VDC), response time (Fast Blow), breaking capacity (300A AC, 450A DC), and physical dimensions (0.688" L x 0.127" W x 0.810" H). Both require the same holder type and carry UR approval.

Q: What is the difference between GMT-1A and BK/GMT-1A?

A: The primary difference is the RoHS compliance designation. GMT-1A carries RoHS Compliant status, while BK/GMT-1A carries ROHS3 Compliant status. All electrical and mechanical specifications are identical.

Q: Are these fuses interchangeable in the same holder?

A: Yes. Both parts share identical physical dimensions and mounting requirements, allowing direct installation in the same holder without modification.

Q: What holder type is required for GMT-1A and BK/GMT-1A?

A: Both fuses require a dedicated holder for installation. The specific holder model should be selected based on the alarm indicator package type and circuit board layout requirements.

Q: Do both parts carry the same regulatory approvals?

A: Yes. Both GMT-1A and BK/GMT-1A carry UR approval certification and are classified under ECCN EAR99 with HTSUS code 8536.10.0040.