BK/GMT-7-1/2A Equivalent & Substitute Parts

Part Overview

The BK/GMT-7-1/2A is a 7.5A indicating fuse manufactured by Eaton - Bussmann Electrical Division, rated for 125 VAC and 60 VDC operation. This fast-blow fuse is designed for telecom applications and requires an external holder for installation. The product is currently active and widely stocked. Substitute parts are identified when electrical ratings, mechanical form factors, and functional characteristics align within acceptable engineering tolerances for the intended application.

Substiute Parts

BK/GMT-7-1/2A

Eaton - Bussmann Electrical DivisionIn Stock: 790BK/GMT-7-1/2A Datasheet

Current PartRFQ

048107.5H

Littelfuse Inc.In Stock: 1080048107.5H Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK/GMT-7-1/2A is determined by the following critical parameters:

• Current Rating: Must be 7.5A
• Voltage Rating - AC: Must be 125 VAC or higher
• Voltage Rating - DC: Must be 60 VDC or higher
• Response Time: Must be Fast Blow
• Fuse Type: Must be Indicating Fuse
• Mounting Type: Must require holder (same form factor compatibility)
• Package / Case: Must be Alarm Indicator type
• Approval Agencies: Must include UR certification at minimum

The substitute part 048107.5H meets all substitution criteria. It maintains identical current and AC voltage ratings, exceeds DC voltage requirements (125 VDC vs. 60 VDC), preserves fast-blow response characteristics, and retains the indicating fuse functionality with holder-based mounting. Both parts carry UR approval and are ROHS3 compliant.

Parameter Comparison

Engineering Selection Recommendations

Both the BK/GMT-7-1/2A and 048107.5H are active products with current manufacturing status and full ROHS3 compliance. Selection between these parts should be based on:

• Availability and lead time requirements
• Holder compatibility with existing mechanical assemblies
• DC voltage margin requirements (048107.5H provides 125 VDC rating vs. 60 VDC requirement)
• Approval agency preference (048107.5H carries both CSA and UR certifications)
• Operating temperature range considerations (048107.5H specifies -55°C to 125°C operating range)

Both parts satisfy telecom application requirements and maintain identical electrical performance at rated specifications.

Frequently Asked Questions (FAQ)

Q: Can 048107.5H be used as a direct replacement for BK/GMT-7-1/2A?

A: Yes. Both parts share identical current ratings (7.5A), AC voltage ratings (125 VAC), response time (fast blow), fuse type (indicating), and mounting requirements (holder-based). The substitute part exceeds DC voltage requirements and carries additional CSA certification.

Q: What are the key differences between these two fuses?

A: The primary differences are DC voltage rating (048107.5H rated for 125 VDC vs. 60 VDC for BK/GMT-7-1/2A), physical dimensions (048107.5H is slightly smaller), and additional certifications (048107.5H includes CSA approval). Both maintain identical AC ratings and fast-blow characteristics.

Q: Are physical dimensions compatible between these parts?

A: Both parts use Alarm Indicator package types and require external holders. Dimensional differences exist (BK/GMT-7-1/2A: 0.688" L x 0.127" W x 0.810" H; 048107.5H: 0.665" L x 0.228" W x 0.772" H), but both are designed for standard indicating fuse holders. Verify holder compatibility with your specific mechanical assembly.

Q: Do both parts meet RoHS requirements?

A: Yes. Both BK/GMT-7-1/2A and 048107.5H are ROHS3 compliant and REACH unaffected.

Q: What is the operating temperature range for these fuses?

A: The BK/GMT-7-1/2A does not specify an operating temperature range in available documentation. The 048107.5H operates across -55°C to 125°C. Consult manufacturer datasheets for specific thermal performance requirements.