GMT-1/2A Indicating Fuse - Equivalent & Substitute Parts

Part Overview

The GMT-1/2A is an indicating fuse manufactured by Eaton - Bussmann Electrical Division, rated for 500mA at 125 VAC / 60 VDC with fast-blow response characteristics. This component is designed for telecom applications requiring visual fault indication and is currently in active production status. Alternative equivalent parts may be required due to inventory constraints, supply chain considerations, or specific compliance requirements for end-use applications.

Substiute Parts

GMT-1/2A

Eaton - Bussmann Electrical DivisionIn Stock: 1910GMT-1/2A Datasheet

Current PartRFQ

BK/GMT-1/2A

Eaton - Bussmann Electrical DivisionIn Stock: 1755BK/GMT-1/2A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the GMT-1/2A is determined by the following critical parameters:

• Current Rating: 500mA (exact match required)
• Voltage Rating - AC: 125 VAC (exact match required)
• Voltage Rating - DC: 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)
• Physical Dimensions: 0.688" L x 0.127" W x 0.810" H (exact match required)
• Manufacturer: Eaton - Bussmann Electrical Division (same manufacturer series)

The identified substitute part BK/GMT-1/2A meets all critical electrical and mechanical parameters. Variations in breaking capacity ratings and RoHS compliance versions do not affect functional substitutability within the specified electrical operating envelope.

Parameter Comparison

Engineering Selection Recommendations

Both GMT-1/2A and BK/GMT-1/2A are active production components from Eaton - Bussmann Electrical Division with UR approval certification. Selection between these parts should be based on:

• Inventory availability and lead time requirements
• RoHS compliance level required by end application (RoHS Compliant vs. ROHS3 Compliant)
• Breaking capacity requirements specific to the circuit protection application (450A AC / 300A DC vs. 300A AC / 450A DC)
• Supply chain and procurement preferences

Both parts are electrically and mechanically interchangeable for the specified 500mA, 125 VAC / 60 VDC telecom application with fast-blow response and indicating functionality.

Frequently Asked Questions (FAQ)

Q: Can BK/GMT-1/2A be used as a direct replacement for GMT-1/2A?

A: Yes. Both parts share identical electrical ratings (500mA, 125 VAC / 60 VDC), response time (fast blow), fuse type (indicating), mounting requirements (requires holder), and physical dimensions. Both carry UR approval and active product status.

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

A: GMT-1/2A is rated 450A AC / 300A DC, while BK/GMT-1/2A is rated 300A AC / 450A DC. Breaking capacity does not affect the fuse's ability to protect circuits at the 500mA rated current. Selection depends on whether the application prioritizes AC or DC fault current interruption capability.

Q: Are there RoHS compliance differences?

A: GMT-1/2A carries RoHS Compliant status, while BK/GMT-1/2A carries ROHS3 Compliant status. ROHS3 represents an updated compliance standard. Both are acceptable for RoHS-regulated applications; selection depends on specific customer or regional requirements.

Q: Do these parts require the same holder?

A: Yes. Both parts have identical physical dimensions (0.688" L x 0.127" W x 0.810" H) and mounting type (requires holder). They are mechanically interchangeable in existing socket installations.

Q: What applications are these fuses designed for?

A: Both parts are specified for telecom applications requiring visual fault indication through the indicating fuse feature and fast-blow response characteristics.