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MERSEN FUSE 12,5 URD 73 D11A 0800 PC73UD13C800D1A
Why Choose the MERSEN FUSE 12,5 URD 73 D11A 0800 PC73UD13C800D1A?
£210.87
Why Choose the Mersen X301826 Protistor® High-Speed Fuse?
The Mersen X301826 is a premium Protistor® square body high-speed semiconductor fuse engineered to provide exceptionally fast short circuit protection for sensitive power electronic equipment. Designed for demanding industrial environments, it protects semiconductors including IGBTs, thyristors, diodes and power converters from destructive fault currents while helping maximise equipment uptime.
As part of the Mersen Protistor® Size 73 series, the X301826 delivers outstanding current limiting performance, high breaking capacity and reliable operation in industrial motor drives, renewable energy systems, UPS installations and power conversion equipment. Its robust square body construction and integrated striker allow dependable protection and simplified maintenance.
With a rated current of 800 A and a 1250 V AC voltage rating, the X301826 is designed for high-power industrial applications requiring rapid semiconductor protection. The split DIN 110 blade terminals provide secure installation in compatible fuse bases and switchgear assemblies.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 800 A rated current for demanding industrial applications.
- 1250 V AC voltage rating suitable for high-power equipment.
- Protects IGBTs, thyristors, diodes and other semiconductor devices.
- Integrated striker for visual indication and remote signalling.
- High breaking capacity minimises damage during fault conditions.
Key Features
- Mersen Protistor® Size 73 series.
- 800 A current rating.
- 1250 V AC rated voltage.
- aR ultra-fast operating characteristic.
- Split DIN 110 blade terminals.
- Integrated mechanical striker.
- Silver-plated contacts for improved conductivity.
- Designed for industrial semiconductor protection.
Reliable Protection for High-Power Electronics
The Mersen X301826 is specifically engineered to interrupt fault currents before they can damage valuable semiconductor devices. Its low let-through energy helps extend equipment life, reduce maintenance costs and improve the reliability of critical industrial power systems.
Protistor® semiconductor fuses are widely specified by OEMs, panel builders and industrial engineers where dependable high-speed protection is essential for modern power electronics.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial power converters.
- UPS systems.
- Renewable energy inverters.
- Soft starters and motor control equipment.
- Industrial automation and process control systems.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Current | 800 A | |
| Device Type | Fuse link | |
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Voltage | 1250 V | |
| Manufacturer | Mersen | |
| Series | Protistor® Size 73 | |
| Model | X301826 | |
| Alternative SKU | PC73UD13C800D1A | |
| Product type | Square body high-speed semiconductor fuse | |
| Fuse characteristic | aR ultra-fast | |
| Rated current | 800 A | |
| Rated voltage | 1250 V AC | |
| Terminal type | Split DIN 110 blade terminals | |
| Indicator | Integrated striker | |
| Mounting | Square body fuse holder | |
| RoHS compliant | Yes | |
| Application | Semiconductor and power converter protection |
Frequently Asked Questions
What is the Mersen X301826 used for?
The X301826 provides ultra-fast protection for semiconductor devices used in industrial power electronics, including IGBTs, thyristors and power converters.
What is the current rating of this fuse?
The fuse has a rated current of 800 A.
What voltage is the X301826 rated for?
The fuse is designed for applications up to 1250 V AC.
Does the fuse include an operating indicator?
Yes. The X301826 features an integrated mechanical striker that provides fuse operation indication and supports remote signalling when used with compatible accessories.
Where is this fuse typically installed?
It is commonly installed in high-power motor drives, converters, renewable energy systems, UPS equipment and industrial power distribution assemblies.
Trusted Protection for Industrial Power Electronics
Mersen Protistor® semiconductor fuses are trusted by OEMs and industrial engineers worldwide for delivering rapid fault interruption, dependable semiconductor protection and long-term reliability in demanding industrial applications.
