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GSA8 Equivalent & Substitute Parts
Part Overview
The GSA8 is a midget time-delay ceramic fuse manufactured by Mersen USA Newburyport-MA L.L.C. This component is designed for circuit protection applications requiring slow-blow response characteristics. The part is currently active in production and ROHS3 compliant. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring 8A ceramic fuse cartridges with 250V AC rating and slow-blow response.
Substiute Parts
Key Parameters
| Parameter | GSA8 |
|---|---|
| Manufacturer | Mersen USA Newburyport-MA L.L.C. |
| Fuse Type | Ceramic, Time Delay (Slow Blow) |
| Current Rating | 8 A |
| Voltage Rating - AC | 250 V |
| Package / Case | 3AB, 3AG, 1/4" x 1-1/4" |
| Mounting Type | Requires Holder |
| Product Status | Active |
| RoHS Status | ROHS3 Compliant |
| ECCN | EAR99 |
Substitute Part Grouping Explanation
Substitute parts for the GSA8 are qualified based on the following critical parameters that determine functional equivalence:
- Current Rating: 8 A (exact match required)
- Voltage Rating - AC: 250 V (exact match required)
- Fuse Type: Ceramic cartridge with slow-blow (time-delay) response
- Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (mechanical compatibility)
- Mounting Type: Requires Holder (installation method compatibility)
- Response Time: Slow Blow (thermal response characteristic)
The identified substitutes meet all these parameters and are therefore electrically and mechanically interchangeable with the GSA8 in applications designed for this specification.
Parameter Comparison
| Parameter | GSA8 (Mersen) | 0326008.HXP (Littelfuse) | 0326008.MXP (Littelfuse) |
|---|---|---|---|
| Manufacturer | Mersen USA Newburyport-MA L.L.C. | Littelfuse Inc. | Littelfuse Inc. |
| Series | * | 326 | 326 |
| Fuse Type | Ceramic, Time Delay | Cartridge, Ceramic | Cartridge, Ceramic |
| Current Rating (Amps) | 8 A | 8 A | 8 A |
| Voltage Rating - AC | 250 V | 250 V | 250 V |
| Response Time | Slow Blow | Slow Blow | Slow Blow |
| Package / Case | 3AB, 3AG, 1/4" x 1-1/4" | 3AB, 3AG, 1/4" x 1-1/4" | 3AB, 3AG, 1/4" x 1-1/4" |
| Mounting Type | Requires Holder | Requires Holder | Requires Holder |
| Breaking Capacity @ Rated Voltage | Not specified | 400 A | 400 A |
| Melting I²t | Not specified | 67.1 | 67.1 |
| Operating Temperature | Not specified | -55°C ~ 125°C | -55°C ~ 125°C |
| Size / Dimension | Not specified | 0.250" Dia x 1.250" L (6.35mm x 31.75mm) | 0.250" Dia x 1.250" L (6.35mm x 31.75mm) |
| DC Cold Resistance | Not specified | 0.0193 Ohms | 0.0193 Ohms |
| Product Status | Active | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Approval Agency | Not specified | CE, CSA, K-MARK, PSE, UL | CE, CSA, K-MARK, PSE, UL |
| ECCN | EAR99 | EAR99 | EAR99 |
Engineering Selection Recommendations
Both Littelfuse 326 series fuses (0326008.HXP and 0326008.MXP) are direct substitutes for the GSA8 based on electrical and mechanical parameter equivalence. All three parts are active products with ROHS3 compliance and EAR99 classification.
The Littelfuse substitutes carry multiple international approvals (CE, CSA, K-MARK, PSE, UL), providing additional certification coverage for applications requiring multi-regional compliance. Both substitute parts are available in production quantities and maintain identical electrical characteristics: 8A current rating, 250V AC voltage rating, slow-blow response, and 3AB/3AG package compatibility.
Selection between 0326008.HXP and 0326008.MXP should be based on packaging format (Bulk) and inventory availability, as both parts are electrically and mechanically identical.
Frequently Asked Questions (FAQ)
Q: Are the Littelfuse 0326008.HXP and 0326008.MXP fuses direct replacements for the GSA8?
A: Yes. Both Littelfuse parts meet all critical electrical and mechanical parameters: 8A current rating, 250V AC voltage rating, slow-blow response time, and 3AB/3AG package compatibility. They are functionally equivalent and mechanically interchangeable.
Q: What are the key parameters that determine substitution eligibility?
A: Substitution is determined by matching: current rating (8A), voltage rating (250V AC), fuse type (ceramic cartridge with slow-blow response), package designation (3AB, 3AG, 1/4" x 1-1/4"), and mounting requirement (holder-based installation).
Q: Do the substitute parts require the same holder as the GSA8?
A: Yes. All three parts require a 3AB or 3AG fuse holder. The physical dimensions (0.250" diameter x 1.250" length) are identical across all parts, ensuring mechanical compatibility with existing holder installations.
Q: Are there compliance or certification differences between the GSA8 and its substitutes?
A: All three parts are ROHS3 compliant and EAR99 classified. The Littelfuse substitutes carry additional international approvals (CE, CSA, K-MARK, PSE, UL), which may be beneficial for applications requiring multi-regional certification documentation.
Q: What is the difference between 0326008.HXP and 0326008.MXP?
A: Both parts are electrically and mechanically identical. The difference is packaging format: 0326008.HXP is supplied in Box packaging, while 0326008.MXP is supplied in Bulk packaging. Selection should be based on procurement and inventory requirements.
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