Eaton GMC-1.5A Glass Fuse 5x20mm Equivalent & Substitute Parts

Part Overview

The Eaton GMC-1.5A is a 1.5 ampere glass cartridge fuse rated for 250 VAC/DC operation in a 5mm x 20mm form factor. This fuse requires a compatible holder for installation and is designed for general-purpose circuit protection applications. The part is currently in active production status with 1080 pieces available in new original inventory. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical dimensions, and functional specifications to ensure direct interchangeability in circuit protection applications.

Substiute Parts

GMC-1.5A

Eaton - Electronics DivisionIn Stock: 1151GMC-1.5A Datasheet

Current PartRFQ

GMC-1.5-R

Eaton - Electronics DivisionIn Stock: 1061GMC-1.5-R Datasheet

DirectRFQ

BK/GMC-1.5-R

Eaton - Electronics DivisionIn Stock: 1667BK/GMC-1.5-R Datasheet

Parametric EquivalentRFQ

BK1/GMC-1.5-R

Eaton - Electronics DivisionIn Stock: 1730BK1/GMC-1.5-R Datasheet

Parametric EquivalentRFQ

MSC-1.5A

OptiFuseIn Stock: 1654MSC-1.5A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the GMC-1.5A are grouped based on strict equivalence of the following critical parameters:

Primary Equivalence Criteria:

• Current Rating: 1.5 A (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Package / Case: 5mm x 20mm (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Medium Blow (exact match required)
• Mounting Type: Requires Holder (exact match required)

Secondary Compatibility Parameters:

• DC Cold Resistance: 0.076 Ohms (where specified)
• Melting I²t: 5.4 to 6.713 (acceptable range for medium-blow cartridge fuses)
• Breaking Capacity @ Rated Voltage: 35A to 100A (acceptable range for this current class)
• Approval Agencies: CSA, KC-MARK, MITI, UL, cULus, UL 248 (recognized standards)

All substitute parts listed maintain identical electrical and mechanical specifications within the allowed parameter ranges for this product category.

Parameter Comparison

Engineering Selection Recommendations

Eaton GMC Series (GMC-1.5A, GMC-1.5-R, BK/GMC-1.5-R, BK1/GMC-1.5-R):

All Eaton GMC series variants meet the specified electrical and mechanical requirements for direct substitution. These parts carry approvals from CSA, KC-MARK, MITI, and UL. The BK/GMC-1.5-R variant offers the highest current inventory (1574 pieces) while maintaining identical electrical parameters to the GMC-1.5A. The BK1/GMC-1.5-R variant has a lower breaking capacity rating of 35A compared to 100A in other variants; this difference is within acceptable parameters for this current class but should be verified against specific application breaking capacity requirements.

OptiFuse MSC-1.5A:

The MSC-1.5A from OptiFuse is a parametric equivalent meeting all primary equivalence criteria. It carries cULus and UL 248 approvals and is rated for operating temperatures from -55°C to 125°C. The melting I²t value of 6.713 is slightly higher than the Eaton variants (5.4), which remains within acceptable tolerance for medium-blow cartridge fuses in this current class. The MSC-1.5A is suitable for applications requiring extended temperature range operation.

Selection Basis:

Component selection should be based on:

• Inventory availability and lead time requirements
• Specific application breaking capacity requirements (35A vs. 100A)
• Operating temperature range requirements (-55°C to 125°C for MSC-1.5A)
• Preferred manufacturer certification standards
• Packaging requirements (Bulk vs. standard packaging)

Frequently Asked Questions (FAQ)

Q: Can GMC-1.5A be directly replaced with GMC-1.5-R?

A: Yes. Both parts share identical electrical ratings (1.5 A, 250 V AC), fuse type (Cartridge, Glass), package dimensions (5mm x 20mm), response time (Medium Blow), and DC cold resistance (0.076 Ohms). Both are manufactured by Eaton - Electronics Division and carry the same approval agencies.

Q: What is the difference between BK/GMC-1.5-R and BK1/GMC-1.5-R?

A: The primary difference is the breaking capacity at rated voltage. BK/GMC-1.5-R has a breaking capacity of 100A, while BK1/GMC-1.5-R has a breaking capacity of 35A. All other electrical and mechanical parameters are identical. Selection between these variants depends on the specific breaking capacity requirement of the application.

Q: Is MSC-1.5A from OptiFuse compatible with Eaton GMC series holders?

A: Yes. The MSC-1.5A has identical package dimensions (5mm x 20mm) and mounting type (Requires Holder) as the Eaton GMC series. It is mechanically and electrically compatible for use in the same holder assemblies.

Q: What does the melting I²t value indicate, and why does MSC-1.5A differ from Eaton variants?

A: Melting I²t is a measure of the thermal energy required to melt the fuse element. The MSC-1.5A value of 6.713 compared to Eaton's 5.4 indicates a slightly different fuse element composition. Both values are acceptable for medium-blow cartridge fuses in the 1.5 A class and do not affect interchangeability in standard applications.

Q: Are all listed substitutes ROHS3 compliant?

A: Yes. All substitute parts listed (GMC-1.5-R, BK/GMC-1.5-R, BK1/GMC-1.5-R, and MSC-1.5A) are ROHS3 compliant.

Q: What approval agencies certify these fuses?

A: Eaton GMC series parts carry approvals from CSA, KC-MARK, MITI, and UL. The OptiFuse MSC-1.5A carries cULus and UL 248 approvals. All approvals are recognized standards for circuit protection components.

Q: Can these fuses be used in DC applications?

A: The specifications indicate 250 V AC/DC rating. However, the primary voltage rating of 250 V AC should be verified against specific DC application requirements, as DC breaking capacity and performance characteristics may differ from AC specifications.

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

A: Eaton GMC series variants do not specify an operating temperature range in the provided data. The OptiFuse MSC-1.5A is rated for -55°C to 125°C operation. For applications requiring extended temperature range operation, the MSC-1.5A is the specified option.