BK/GMA-6A Equivalent & Substitute Parts

Part Overview

The BK/GMA-6A is a 6 A, 125 V AC/DC fast-blow glass cartridge fuse with a 5mm x 20mm form factor manufactured by Eaton - Electronics Division. This fuse requires a compatible holder for installation and is designed for circuit protection applications requiring fast response characteristics. The part is classified as obsolete, necessitating identification of active equivalent and substitute components that maintain electrical and mechanical compatibility with the original specification.

Substiute Parts

BK/GMA-6A

Eaton - Electronics DivisionIn Stock: 797BK/GMA-6A Datasheet

Current PartRFQ

BK/GMA-6-R

Eaton - Electronics DivisionIn Stock: 737BK/GMA-6-R Datasheet

DirectRFQ

GMA-6-R

Eaton - Electronics DivisionIn Stock: 855GMA-6-R Datasheet

Parametric EquivalentRFQ

0235006.MXP

Littelfuse Inc.In Stock: 15820235006.MXP Datasheet

DirectRFQ

0235006.VXP

Littelfuse Inc.In Stock: 12630235006.VXP Datasheet

DirectRFQ

0235006.HXP

Littelfuse Inc.In Stock: 15340235006.HXP Datasheet

Parametric EquivalentRFQ

BP/GMA-6A

Eaton - Bussmann Electrical DivisionIn Stock: 756BP/GMA-6A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BK/GMA-6A is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Parameters:

• Current Rating: 6 A
• Voltage Rating (AC): 125 V
• Fuse Type: Cartridge, Glass
• Response Time: Fast Blow
• Package / Case: 5mm x 20mm
• Breaking Capacity @ Rated Voltage: 10 kA
• Mounting Type: Requires Holder

All substitute parts listed maintain these electrical and mechanical specifications. Variations in secondary parameters such as DC Cold Resistance, Melting I²t, approval agencies, and RoHS compliance status do not preclude substitution when the mandatory parameters are identical. The substitute parts are grouped by manufacturer and product status to facilitate selection based on availability and compliance requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation - Eaton Electronics Division: BK/GMA-6-R and GMA-6-R are direct active replacements from the original manufacturer. Both maintain full electrical and mechanical compatibility with BK/GMA-6A. BK/GMA-6-R carries ROHS3 compliance with CSA, PSE, and UL approvals. GMA-6-R carries RoHS compliance with CSA, PSE, and UL approvals. Selection between these two depends on specific regulatory requirements for the end application.

Secondary Recommendation - Littelfuse Inc.: The 0235006 series (MXP, VXP, HXP variants) from Littelfuse Inc. provides equivalent electrical and mechanical performance with extended operating temperature range (-55°C to 125°C) and broader approval agency coverage including CE, CSA, KC, PSE, and UL certifications. All three variants are ROHS3 compliant and REACH unaffected. These parts are suitable for applications requiring enhanced environmental specifications or multi-regional compliance.

Alternative Recommendation - Eaton Bussmann Division: BP/GMA-6A from Eaton - Bussmann Electrical Division is an active product with RoHS compliance. This part maintains mechanical and electrical equivalence but does not specify breaking capacity in available documentation.

All substitute parts are active products, eliminating obsolescence risk associated with the original BK/GMA-6A component.

Frequently Asked Questions (FAQ)

Q: Can BK/GMA-6-R be used as a direct replacement for BK/GMA-6A? A: Yes. BK/GMA-6-R is electrically and mechanically equivalent to BK/GMA-6A across all critical parameters: 6 A current rating, 125 V AC voltage rating, fast-blow response, 5mm x 20mm package, and 10 kA breaking capacity. BK/GMA-6-R is an active product, whereas BK/GMA-6A is obsolete.

Q: What is the difference between BK/GMA-6-R and GMA-6-R? A: Both parts are manufactured by Eaton - Electronics Division and are electrically and mechanically identical. The primary difference is RoHS compliance status: BK/GMA-6-R is ROHS3 compliant, while GMA-6-R is RoHS compliant. Approval agencies differ slightly: BK/GMA-6-R carries CSA, PSE, and UL; GMA-6-R carries CSA, PSE, and UL.

Q: Are Littelfuse 0235006 series fuses compatible with the original BK/GMA-6A specification? A: Yes. The 0235006.MXP, 0235006.VXP, and 0235006.HXP variants maintain full electrical and mechanical compatibility with BK/GMA-6A. All three are 6 A, 125 V AC/DC fast-blow glass cartridge fuses in 5mm x 20mm packages with 10 kA breaking capacity. These parts offer extended operating temperature range (-55°C to 125°C) and broader international approval coverage.

Q: Does the DC Cold Resistance difference between Eaton and Littelfuse parts affect substitution? A: No. DC Cold Resistance values (0.017 Ohms for Eaton parts, 0.0148 Ohms for Littelfuse parts) are within acceptable tolerance for this component category and do not preclude substitution. Both values are sufficiently low for the intended application.

Q: What is the significance of the Melting I²t parameter difference? A: Eaton parts specify Melting I²t of 45, while Littelfuse parts specify 47.325. Both values are within the acceptable range for 6 A fast-blow fuses and do not affect substitution compatibility. This parameter reflects thermal characteristics and does not alter the functional equivalence of the parts.

Q: Which substitute part should be selected for applications requiring international compliance? A: The Littelfuse 0235006 series (MXP, VXP, HXP) provides the broadest approval agency coverage, including CE, CSA, KC, PSE, and UL certifications. These parts are suitable for applications requiring multi-regional regulatory compliance.

Q: Are all substitute parts available in the same packaging as the original BK/GMA-6A? A: All substitute parts maintain the 5mm x 20mm physical form factor and require the same holder type. Packaging format (bulk vs. other configurations) may vary by supplier and availability.