Equivalent & Substitute Parts for BK/GMC-150MA Glass Cartridge Fuse

Part Overview

The BK/GMC-150MA is a 150 mA, 250 V AC/DC glass cartridge fuse manufactured by Eaton - Electronics Division, designed for 5mm x 20mm holder applications. This fuse operates with medium blow response characteristics and is rated for 35 A breaking capacity at rated voltage. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for continued circuit protection applications.

Substiute Parts

BK/GMC-150MA

Eaton - Electronics DivisionIn Stock: 1036BK/GMC-150MA Datasheet

Current PartRFQ

BK/GMC-150-R

Eaton - Electronics DivisionIn Stock: 1466BK/GMC-150-R Datasheet

DirectRFQ

BK1/GMC-150-R

Eaton - Electronics DivisionIn Stock: 878BK1/GMC-150-R Datasheet

Parametric EquivalentRFQ

GMC-150-R

Eaton - Electronics DivisionIn Stock: 737GMC-150-R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete BK/GMC-150MA is determined by strict equivalence across all electrical and mechanical parameters. The following criteria establish valid substitutes:

Critical Substitution Parameters:

• Current Rating: 150 mA (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Package / Case: 5mm x 20mm (exact match required)
• Response Time: Medium Blow (exact match required)
• Breaking Capacity @ Rated Voltage: 35 A (exact match required)
• Melting I²t: 0.022 (exact match required)
• DC Cold Resistance: 2.555 Ohms (exact match required)
• Mounting Type: Requires Holder (exact match required)

All three substitute part numbers—BK/GMC-150-R, BK1/GMC-150-R, and GMC-150-R—satisfy these criteria without deviation. These parts are manufactured by the same supplier (Eaton - Electronics Division) and belong to the same GMC series, ensuring design and performance continuity.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: BK/GMC-150-R

The BK/GMC-150-R is the direct manufacturer equivalent with active product status. It maintains all electrical and mechanical specifications of the obsolete BK/GMC-150MA while offering ROHS3 compliance and current availability (1359 pcs in stock). This part carries identical approval certifications (CSA, KC-MARK, UL) and is packaged in bulk format.

Secondary Recommendations: BK1/GMC-150-R and GMC-150-R

Both BK1/GMC-150-R and GMC-150-R are parametric equivalents with active status and ROHS3 compliance. BK1/GMC-150-R includes CSA, KC, and UL certifications (813 pcs available). GMC-150-R includes CSA, KC-MARK, and UL certifications (683 pcs available). These alternatives are suitable where the specific part number variant is not constrained by design documentation.

Compliance Consideration:

All substitute parts achieve ROHS3 compliance, addressing environmental regulatory requirements that the obsolete BK/GMC-150MA does not meet. This compliance upgrade is inherent to the substitution and requires no additional validation.

Frequently Asked Questions (FAQ)

Q: Can BK/GMC-150-R be used as a direct replacement for BK/GMC-150MA?

A: Yes. BK/GMC-150-R is electrically and mechanically identical to BK/GMC-150MA across all specified parameters: 150 mA current rating, 250 V AC voltage rating, 5mm x 20mm package, medium blow response, 35 A breaking capacity, 0.022 melting I²t, and 2.555 Ohms DC cold resistance. The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant).

Q: What is the difference between BK/GMC-150-R, BK1/GMC-150-R, and GMC-150-R?

A: All three parts are parametric equivalents with identical electrical and mechanical specifications. The differences are nomenclature variants within the Eaton GMC series. BK/GMC-150-R and GMC-150-R include KC-MARK certification, while BK1/GMC-150-R includes KC certification without the MARK designation. Selection between these variants depends on design documentation requirements or regional certification preferences.

Q: Are these fuses compatible with existing 5mm x 20mm holders?

A: Yes. All substitute parts maintain the 5mm x 20mm package dimension (0.205" Dia x 0.787" L) and require holder mounting, ensuring mechanical compatibility with existing socket installations designed for the BK/GMC-150MA.

Q: Does substitution require circuit re-qualification?

A: No re-qualification is required. The substitute parts maintain identical electrical characteristics (current rating, voltage rating, response time, breaking capacity, melting I²t, and DC cold resistance), ensuring equivalent circuit protection performance.

Q: What is the inventory status for these substitutes?

A: BK/GMC-150-R has 1359 pcs in stock, BK1/GMC-150-R has 813 pcs in stock, and GMC-150-R has 683 pcs in stock. All are available as new original components.