GMA-4A Equivalent & Substitute Parts Reference

Part Overview

The GMA-4A is a 4 A 125 V AC/DC glass cartridge fuse with a 5mm x 20mm form factor manufactured by Eaton - Electronics Division. This fast-blow fuse cartridge requires a compatible holder for installation and is designed for general-purpose circuit protection applications. The part is currently in active production status with 850 pieces available in new original inventory. Substitute parts are identified based on matching electrical ratings, mechanical dimensions, response characteristics, and regulatory approvals to ensure direct functional equivalence in circuit protection applications.

Substiute Parts

GMA-4A

Eaton - Electronics DivisionIn Stock: 875GMA-4A Datasheet

Current PartRFQ

GMA-4-R

Eaton - Electronics DivisionIn Stock: 1155GMA-4-R Datasheet

DirectRFQ

0235004.HXP

Littelfuse Inc.In Stock: 12320235004.HXP Datasheet

Parametric EquivalentRFQ

0235004.MXP

Littelfuse Inc.In Stock: 15610235004.MXP Datasheet

Parametric EquivalentRFQ

0235004.VXP

Littelfuse Inc.In Stock: 11250235004.VXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the GMA-4A are qualified based on the following critical parameters that must match exactly:

• Current Rating: 4 A (no deviation)
• Voltage Rating (AC): 125 V (no deviation)
• Fuse Type: Cartridge, Glass
• Package / Case: 5mm x 20mm (mechanical compatibility with existing holders)
• Response Time: Fast Blow
• Breaking Capacity @ Rated Voltage: 10 kA
• Mounting Type: Requires Holder

All identified substitute parts meet these electrical and mechanical requirements. Substitution is valid when the replacement part maintains identical current and voltage ratings, physical dimensions, and breaking capacity specifications. Regulatory approvals and compliance certifications are secondary qualifiers that may vary by regional application requirements.

Parameter Comparison

Engineering Selection Recommendations

All five parts listed—GMA-4A, GMA-4-R, 0235004.HXP, 0235004.MXP, and 0235004.VXP—are functionally equivalent for 4 A 125 V AC/DC circuit protection applications with 5mm x 20mm form factors. Selection among these parts should be based on the following criteria:

Manufacturer Preference: GMA-4-R is the direct Eaton equivalent to GMA-4A, maintaining identical electrical characteristics and resistance values. Littelfuse parts (0235004.HXP, 0235004.MXP, 0235004.VXP) are parametric equivalents with slightly lower DC cold resistance (0.0246 Ohms vs. 0.026 Ohms) and lower melting I²t values (17.14 vs. 19).

Regulatory Compliance: GMA-4A and GMA-4-R carry CSA, PSE, and UL approvals. Littelfuse parts carry expanded certifications including CE and KC/K-MARK approvals, making them suitable for applications requiring broader international compliance.

Inventory Availability: 0235004.MXP has the highest inventory level (1545 pieces), followed by 0235004.HXP (1143 pieces) and 0235004.VXP (1032 pieces). GMA-4-R has 1092 pieces available.

Operating Temperature Range: Littelfuse parts specify an operating temperature range of -55°C to 125°C, while Eaton parts do not specify this parameter in the provided data.

All parts are active products in production and RoHS compliant. Selection should prioritize supply chain continuity, regional certification requirements, and existing inventory levels.

Frequently Asked Questions (FAQ)

Q: Can I substitute GMA-4A with GMA-4-R?

A: Yes. GMA-4-R is the direct Eaton equivalent to GMA-4A. Both parts share identical current rating (4 A), voltage rating (125 V), package dimensions (5mm x 20mm), breaking capacity (10 kA), and DC cold resistance (0.026 Ohms). They are mechanically and electrically interchangeable.

Q: Are Littelfuse 0235004 series parts compatible with GMA-4A?

A: Yes. The Littelfuse parts 0235004.HXP, 0235004.MXP, and 0235004.VXP are parametric equivalents to GMA-4A. All three match the critical specifications: 4 A current rating, 125 V AC voltage rating, 5mm x 20mm package, 10 kA breaking capacity, and fast-blow response time. Minor differences exist in DC cold resistance (0.0246 Ohms vs. 0.026 Ohms) and melting I²t (17.14 vs. 19), but these do not affect functional compatibility in standard circuit protection applications.

Q: What is the difference between 0235004.HXP, 0235004.MXP, and 0235004.VXP?

A: All three Littelfuse parts are electrically and mechanically identical. The differences lie in regulatory approvals: 0235004.HXP carries CE, CSA, KC, PSE, and UL certifications; 0235004.MXP carries CE, CSA, KC, PSE, and UL certifications; 0235004.VXP carries CE, CSA, K-MARK, PSE, and UL certifications. Selection should be based on regional compliance requirements.

Q: Will these fuses fit in my existing GMA-4A holder?

A: Yes. All substitute parts maintain the identical 5mm x 20mm package dimensions (0.205" diameter x 0.787" length). They are mechanically compatible with any holder designed for 5mm x 20mm cartridge fuses.

Q: What is the breaking capacity specification, and why does it matter?

A: Breaking capacity is the maximum fault current the fuse can safely interrupt at its rated voltage. All listed parts have a breaking capacity of 10 kA at 125 V. This specification ensures the fuse will safely clear fault conditions without rupturing or creating hazardous conditions. All substitute parts meet this requirement.

Q: Are these parts RoHS compliant?

A: Yes. GMA-4A and GMA-4-R are RoHS Compliant. Littelfuse parts (0235004.HXP, 0235004.MXP, 0235004.VXP) are ROHS3 Compliant. Both compliance levels are acceptable for most applications.

Q: What does "Fast Blow" response time mean?

A: Fast Blow indicates the fuse will open quickly when exposed to overcurrent conditions, typically within milliseconds. All listed parts share this fast-blow characteristic, making them suitable for applications requiring rapid circuit protection without nuisance trips.

Q: Can I use these fuses in DC applications?

A: Yes. All parts are rated for both AC and DC operation at 125 V. The 4 A current rating applies to both AC and DC circuits.