GMA-3-R Equivalent & Substitute Parts Reference

Part Overview

The GMA-3-R is a 3 A, 250 V AC/DC fast-blow glass cartridge fuse manufactured by Eaton - Electronics Division. This component is designed for use in fuse holders with 5mm x 20mm form factor and is currently in active production status. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical dimensions, response characteristics, and regulatory approvals to ensure direct functional interchangeability in circuit protection applications.

Substiute Parts

GMA-3-R

Eaton - Electronics DivisionIn Stock: 4083GMA-3-R Datasheet

Current PartRFQ

BK/GMA-3-R

Eaton - Electronics DivisionIn Stock: 1883BK/GMA-3-R Datasheet

DirectRFQ

0235003.HXP

Littelfuse Inc.In Stock: 15010235003.HXP Datasheet

DirectRFQ

0235003.VXP

Littelfuse Inc.In Stock: 8120235003.VXP Datasheet

DirectRFQ

0034.3880

SCHURTER Inc.In Stock: 18180034.3880 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the GMA-3-R are classified into two categories based on substitution relationship type:

Direct Manufacturer Substitutes maintain identical electrical and mechanical specifications with the main part. These include BK/GMA-3-R (Eaton bulk packaging variant), 0235003.HXP, and 0235003.VXP (Littelfuse Inc. equivalents). All direct substitutes share the following critical parameters: 3 A current rating, 250 V AC voltage rating, fast-blow response, 5mm x 20mm form factor, 100 A breaking capacity, and 0.205" Dia x 0.787" L dimensions.

Parametric Equivalent parts meet the same electrical and mechanical requirements but may exhibit minor variations in secondary characteristics such as melting I²t values or operating temperature ranges. The part 0034.3880 (SCHURTER Inc.) qualifies as a parametric equivalent, matching all primary substitution criteria while maintaining functional compatibility in the target application.

Substitution eligibility is determined by strict conformance to: current rating (3 A), voltage rating (250 V AC), fuse type (cartridge glass), response time (fast blow), package dimensions (5mm x 20mm), and breaking capacity (100 A).

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain active production status and comply with applicable regulatory standards. Selection between substitute options should be based on the following factors:

Eaton GMA Series (GMA-3-R and BK/GMA-3-R): Both parts are manufactured by Eaton - Electronics Division and carry identical electrical and mechanical specifications. BK/GMA-3-R represents the bulk packaging variant of the same product line. These options are suitable for applications requiring continuity with existing Eaton component ecosystems and hold CSA, PSE, and UL approvals.

Littelfuse 235 Series (0235003.HXP and 0235003.VXP): Both Littelfuse parts are direct electrical and mechanical equivalents with extended operating temperature range (-55°C ~ 125°C) compared to the main part. These components carry broader regulatory approvals including CE and KC certifications. The distinction between 0235003.HXP and 0235003.VXP relates to packaging and certification scope, with both maintaining identical electrical performance.

SCHURTER FSK 5x20 Series (0034.3880): This part meets all primary substitution criteria with a narrower operating temperature range (-40°C ~ 85°C) and lower melting I²t value (6.8 versus 8.8). The SCHURTER component holds cULus certification and is suitable for applications within its specified temperature envelope.

All substitute parts are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can BK/GMA-3-R be used as a direct replacement for GMA-3-R?

A: Yes. BK/GMA-3-R is the bulk packaging variant of the GMA-3-R manufactured by Eaton - Electronics Division. Both parts share identical electrical ratings (3 A, 250 V AC), fuse type (cartridge glass), response time (fast blow), mechanical dimensions (5mm x 20mm), and breaking capacity (100 A). The only difference is packaging format.

Q: What is the difference between Littelfuse 0235003.HXP and 0235003.VXP?

A: Both parts are electrically and mechanically identical with matching 3 A, 250 V AC ratings and 5mm x 20mm form factor. The primary difference is regulatory certification scope: 0235003.HXP carries CE, CSA, KC, PSE, and UL approvals, while 0235003.VXP carries CE, CSA, K-MARK, PSE, and UL approvals. Both maintain identical melting I²t (8.395) and operating temperature range (-55°C ~ 125°C).

Q: Can SCHURTER 0034.3880 be substituted in all applications using GMA-3-R?

A: The SCHURTER 0034.3880 meets all primary electrical and mechanical substitution criteria (3 A, 250 V AC, fast blow, 5mm x 20mm, 100 A breaking capacity). However, the operating temperature range is narrower (-40°C ~ 85°C versus unspecified for GMA-3-R) and the melting I²t is lower (6.8 versus 8.8). Substitution is appropriate for applications operating within the SCHURTER temperature specification.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance status. The main part GMA-3-R is RoHS Compliant, and all direct and parametric equivalents meet ROHS3 standards.

Q: What regulatory approvals are common across all substitute options?

A: CSA, PSE, and UL approvals are present across all substitute parts. Additional certifications vary by manufacturer: Littelfuse parts include CE and KC/K-MARK approvals, while SCHURTER carries cULus certification.

Q: Do substitute parts require the same holder as GMA-3-R?

A: Yes. All substitute parts are cartridge glass fuses with 5mm x 20mm form factor and require a compatible 5mm x 20mm fuse holder. Mechanical compatibility is ensured across all listed substitutes.

Q: What is the significance of melting I²t values in the parameter comparison?

A: Melting I²t indicates the thermal energy required to melt the fuse element. GMA-3-R and BK/GMA-3-R specify 8.8, Littelfuse parts specify 8.395, and SCHURTER specifies 6.8. These variations reflect different fuse element designs but do not affect the 3 A current rating or fast-blow response classification. All parts maintain the same breaking capacity (100 A) at rated voltage.