MERSEN FERRAZ A4J Series Fast-Acting Fuses, Class J
Mersen Ferraz A4J Series fast-acting fuses are used in electrical systems, capacitors, load centres, panelboards and circuit breakers for protecting lighting, heating and general loads. They safeguard equipment from overcurrent conditions and ensuring operational safety.
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AC Voltage Rating: 600V , Frame Type: A4J , Mounting: Clip , Number of Poles: 1 , Voltage: 600V
Style | Model | Amps | Body Material | Current Rating | Diameter | Length | Speed | Price (ex. VAT) | |
---|---|---|---|---|---|---|---|---|---|
A | A4J600EI | - | GMG | 600A | 2.5" | 8" | Fast Acting | - | RFQ
|
A | A4J110EI | - | GMG | 110A | 1.62" | 5.75" | Fast Acting | - | RFQ
|
A | A4J200EI | - | GMG | 200A | 1.62" | 5.75" | Fast Acting | - | RFQ
|
B | A4J1 | 1A | PolyTube | 1A | 0.81" | 2.25" | Fast Acting | €20.22 | |
B | A4J3 | 3A | PolyTube | 3A | 0.81" | 2.25" | Fast-Acting | €24.58 | |
B | A4J6 | 6A | PolyTube | 6A | 0.81" | 2.25" | Fast Acting | €24.58 | |
B | A4J10 | 10A | PolyTube | 10A | 0.81" | 2.25" | Fast-Acting | €23.94 | |
B | A4J15 | 15A | PolyTube | 15A | 0.81" | 2.25" | Fast-Acting | €23.12 | |
B | A4J20 | 20A | - | - | - | - | - | €23.12 | |
B | A4J25 | 25A | PolyTube | 25A | 0.81" | 2.25" | Fast Acting | €23.12 | |
B | A4J30 | 30A | PolyTube | 30A | 0.81" | 2.25" | Fast-Acting | €23.12 | |
B | A4J35 | 35A | PolyTube | 35A | 1.06" | 2.38" | Fast-Acting | €38.73 | |
B | A4J40 | 40A | PolyTube | 40A | 1.06" | 2.38" | Fast Acting | - | RFQ
|
B | A4J45 | 45A | PolyTube | 45A | 1.06" | 2.38" | Fast Acting | €38.73 | |
B | A4J50 | 50A | PolyTube | 50A | 1.06" | 2.38" | Fast-Acting | €38.73 | |
B | A4J60 | 60A | PolyTube | 60A | 1.06" | 2.38" | Fast Acting | €38.73 | |
B | A4J70 | 70A | GMG | 70A | 1.06" | 4.63" | Fast Acting | €48.62 | |
B | A4J75 | 75A | GMG | 75A | 1.06" | 4.63" | Fast Acting | - | RFQ
|
B | A4J80 | 80A | GMG | 80A | 1.06" | 4.63" | Fast Acting | €58.79 | |
B | A4J90 | 90A | GMG | 90A | 1.06" | 4.63" | Fast Acting | €58.79 | |
B | A4J100 | 100A | GMG | 100A | 1.06" | 4.63" | Fast-Acting | €58.79 | |
B | A4J110 | 110A | GMG | 110A | 1.62" | 5.75" | Fast Acting | €119.95 | |
B | A4J125 | 125A | GMG | 125A | 1.62" | 5.75" | Fast Acting | €102.44 | |
B | A4J150 | 150A | GMG | 150A | 1.62" | 5.75" | Fast-Acting | €102.44 | |
B | A4J175 | 175A | GMG | 175A | 1.62" | 5.75" | Fast Acting | €102.44 | |
B | A4J200 | 200A | GMG | 200A | 1.62" | 5.75" | Fast Acting | €102.44 | |
B | A4J225 | 225A | GMG | 225A | 2.12" | 7.13" | Fast Acting | €221.87 | |
B | A4J250 | 250A | GMG | 250A | 2.12" | 7.13" | Fast Acting | €221.87 | |
B | A4J300 | 300A | GMG | 300A | 2.12" | 7.13" | Fast-Acting | €221.87 | |
B | A4J350 | 350A | GMG | 350A | 2.12" | 7.13" | Fast-Acting | €243.92 | |
B | A4J400 | 400A | GMG | 400A | 2.12" | 7.13" | Fast Acting | €221.87 | |
B | A4J450 | 450A | GMG | 450A | 2.5" | 8" | Fast Acting | €304.45 | |
B | A4J500 | 500A | GMG | 500A | 2.5" | 8" | Fast-Acting | €288.75 | |
B | A4J600 | 600A | GMG | 600A | 2.5" | 8" | Fast Acting | €259.98 |
Working Mechanism
- Overcurrent flows due to a fault or overload.
- The fuse's internal conductor quickly melts at a specific current threshold.
- Melting creates an air gap, interrupting the circuit.
- This protects connected equipment from damage.
Features
- These fuses offer high current limitation with low peak let-thru current, enhancing safety during overcurrent events.
- They have unique dimensions to prevent replacement by other fuse classes, ensuring proper protection.
- These fast acting fuses feature a fibreglass body for enhanced dimensional stability in harsh industrial environments for consistent performance.
- They come with an easy-to-read imprint label for quick recognition and replacement for simplified maintenance and reduced downtime.
Compatible Accessories
- Mersen Ferraz Class J Fuseholders: These fuse holders are ideal for holding and connecting Class J fuses within electrical systems.They have GFPC / phenolic construction for structural rigidity and improved insulation in case of electrical emergencies.
Frequently Asked Questions
What factors should I consider while choosing a fast-acting fuse?
- Match current rating to circuit's needs.
- Ensure voltage rating is sufficient.
- Select a fast-acting fuse for quick response.
- Assess application-specific requirements.
- Check suitability for the operating environment.
- Verify short-circuit protection capability.
- Ensure physical size fits the circuit.
- Look for relevant safety certifications.
- Balance cost with performance.
- Consider ease of replacement.
How do I clean and maintain Mersen Ferraz A4J Series fast-acting fuses?
- Isolate power supply.
- Inspect for damage or wear.
- Replace if necessary.
- Keep contacts clean.
- Ensure secure mounting.
How do I install fast-acting fuses?
- Ensure power is off.
- Choose the correct fuse size.
- Insert the fuse into the compatible holder.
- Ensure proper seating.
- Restore power cautiously.
- Verify functionality.
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