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MERSEN FUSE 400V SA 1,25 A 6.32 MI6SA40V1,25
Mersen Y078911 miniature semiconductor fuse, 6.3 × 32 mm ceramic cartridge, rated 1.25 A and 400 V AC for industrial semiconductor protection.
£2.78
Why Choose the Mersen Y078911 Miniature Semiconductor Fuse?
The Mersen Y078911 is a high-performance 6.3 × 32 mm miniature semiconductor fuse designed to provide dependable protection for sensitive electronic and semiconductor equipment. Identified by catalogue number MI6SA40V1.25, it features a 1.25 A current rating and a 400 V AC voltage rating, making it ideal for protecting industrial electronics, instrumentation and power conversion equipment against overloads and short-circuit faults.
Part of the Mersen SA miniature semiconductor fuse series, the Y078911 incorporates a ceramic body and a high breaking capacity to provide reliable protection under demanding operating conditions. Its compact cartridge format enables straightforward installation in compatible 6.3 × 32 mm fuse holders while maintaining dependable electrical performance.
Engineered for industrial applications where fast fault clearance is essential, the Y078911 helps minimise damage to sensitive semiconductors and electronic assemblies by rapidly interrupting fault currents before excessive thermal energy can build up.
Key Advantages
- Designed for semiconductor and electronic circuit protection.
- 1.25 A rated current.
- 400 V AC operating voltage.
- Compact 6.3 × 32 mm ceramic cartridge.
- High interrupting capacity for demanding industrial applications.
- Reliable protection for sensitive electronic equipment.
Key Features
- Mersen SA miniature semiconductor fuse series.
- Model: Y078911.
- Catalogue number: MI6SA40V1.25.
- 1.25 A rated current.
- 400 V AC rated voltage.
- 6.3 × 32 mm ceramic cartridge fuse.
- High-speed semiconductor protection.
- High breaking capacity.
- Clip-mounted installation.
- Suitable for industrial electronic equipment.
Reliable Protection for Sensitive Electronic Equipment
Semiconductor protection fuses are designed to interrupt fault currents extremely quickly, helping prevent damage to expensive electronic components. Their specialised characteristics reduce the amount of energy allowed to pass through the circuit during a fault, improving equipment reliability and reducing downtime.
The Mersen Y078911 combines compact dimensions, ceramic construction and a high interrupting capacity, making it suitable for industrial automation, power supplies, instrumentation, converters and OEM electronic equipment where dependable circuit protection is essential.
Typical Applications
- Industrial power supplies.
- Semiconductor protection.
- Power electronic converters.
- Automation systems.
- Instrumentation equipment.
- OEM electronic assemblies.
Technical Specifications
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| Current | 1.25 A | |
|---|---|---|
| Voltage | 400 V | |
| Device Type | Fuse link | |
| Fuse Type | Miniature, Semiconductor | |
| Fuse Size | 6.3x32 mm | |
| Fuse Class | Time delay | |
| Manufacturer | Mersen | |
| Series | SA Miniature Semiconductor Fuses | |
| Model | Y078911 | |
| Catalogue number | MI6SA40V1.25 | |
| Product type | Miniature semiconductor fuse | |
| Fuse size | 6.3 × 32 mm | |
| Rated current | 1.25 A | |
| Rated voltage | 400 V AC | |
| Frequency | 50 / 60 Hz | |
| Breaking capacity | 200 kA | |
| Fuse characteristic | Semiconductor protection (SA) | |
| Body material | Ceramic | |
| Mounting type | Clip mounting | |
| Pre-arcing I²t | 0.55 A²s | |
| Total clearing I²t | 1.2 A²s | |
| EAN | 3605340032741 | |
| Manufacturer pack quantity | 50 |
Frequently Asked Questions
What is the Mersen Y078911 used for?
The Y078911 is a miniature semiconductor fuse designed to protect sensitive electronic circuits and semiconductor devices from overloads and short-circuit faults.
What are the electrical ratings?
The fuse is rated at 1.25 A and 400 V AC.
What size is the fuse?
The Mersen Y078911 uses the standard 6.3 × 32 mm ceramic cartridge format.
What is the interrupting capacity?
The fuse has a high 200 kA breaking capacity, making it suitable for demanding industrial applications.
Where is the Y078911 commonly used?
It is commonly installed in power supplies, industrial electronics, automation equipment, instrumentation and semiconductor protection circuits.
Trusted by Electrical Professionals Worldwide
Mersen miniature semiconductor fuses are trusted by equipment manufacturers, automation engineers and maintenance professionals for providing dependable overcurrent protection and reliable performance in demanding electronic applications.
