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MERSEN FUSE 12,5 URD 72 D11 I 0550 PC72UD13C550D1I
Why Choose the MERSEN FUSE 12,5 URD 72 D11 I 0550 PC72UD13C550D1I?
£121.18
Why Choose the Mersen G302203 Protistor® High-Speed Fuse?
The Mersen G302203 is a high-speed semiconductor fuse from the trusted Mersen Protistor® range, developed to provide rapid protection for sensitive power electronic equipment. Designed specifically for semiconductor applications, it delivers extremely fast fault interruption and excellent current-limiting performance to help safeguard expensive devices against damaging short-circuit currents.
Protistor® semiconductor fuses utilise precision silver fuse elements embedded in solidified silica sand to achieve low let-through energy (I²t), high interrupting capacity and dependable long-term performance. This design helps minimise thermal and mechanical stress on protected semiconductor devices including IGBTs, thyristors, SCRs, diodes and rectifier modules.
The G302203 is intended for demanding industrial power conversion systems where reliable semiconductor protection is essential. It is suitable for installation within compatible fuse assemblies, busbar systems and OEM-designed equipment in accordance with the manufacturer's specifications.
Key Advantages
- High-speed semiconductor protection for industrial power electronics.
- Rapid short-circuit interruption helps minimise equipment damage.
- Excellent current limitation with low let-through energy.
- Suitable for protecting IGBTs, SCRs, thyristors, diodes and rectifiers.
- Robust industrial construction for demanding applications.
- Supports improved equipment reliability and reduced downtime.
Key Features
- Mersen Protistor® semiconductor protection fuse.
- Manufacturer reference: G302203.
- Ultra-fast operating characteristic for semiconductor protection.
- Current-limiting fuse technology.
- Low total clearing I²t.
- Industrial ceramic fuse construction.
- Designed for OEM power electronic equipment.
- Suitable for demanding industrial environments.
Reliable Protection for Industrial Power Electronics
High-speed semiconductor fuses are engineered to interrupt fault currents before damaging levels of thermal energy reach sensitive electronic components. Their rapid response helps protect costly semiconductor assemblies, reduce maintenance costs and improve overall system reliability.
For optimum protection, the replacement fuse should always match the original manufacturer's specification for voltage, current rating, fuse class, mounting arrangement and breaking capacity.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor control systems.
- Power converters and rectifiers.
- Renewable energy inverter systems.
- UPS and backup power equipment.
- Protection of IGBT, SCR, thyristor and diode modules.
Technical Specifications
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| Device Type | Fuse link | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | Fast acting | |
| Manufacturer | Mersen | |
| Product range | Protistor® | |
| Model | G302203 | |
| Product type | High-speed semiconductor fuse | |
| Protection function | Semiconductor short-circuit protection | |
| Operating characteristic | Ultra-fast acting | |
| Construction | Ceramic body with silver fuse elements and silica arc-quenching filler | |
| Protected devices | IGBTs, SCRs, thyristors, diodes and rectifiers | |
| Typical installation | Compatible fuse holder or OEM equipment assembly | |
| Application | Industrial power electronics | |
| Manufacturer part number | G302203 | |
| Selection | Verify current, voltage, dimensions and fuse class before installation. |
Frequently Asked Questions
What is the Mersen G302203 used for?
The Mersen G302203 is a high-speed semiconductor fuse designed to protect sensitive power electronic devices against damaging short-circuit currents.
Is the G302203 suitable for general electrical circuit protection?
No. It is specifically designed for semiconductor protection and should only be used where this type of fuse is specified.
Which components can it protect?
It is commonly used to protect IGBTs, SCRs, thyristors, power diodes, rectifiers and other semiconductor power devices.
Why are semiconductor fuses faster than standard fuses?
They are engineered with specialised fuse elements that interrupt fault currents extremely quickly, reducing the energy transferred to sensitive semiconductor components.
How should a replacement fuse be selected?
Always match the original manufacturer's specified voltage, current rating, dimensions, mounting arrangement and operating characteristic before installation.
Trusted for Industrial Semiconductor Protection
Mersen Protistor® semiconductor fuses are specified worldwide by OEMs, electrical engineers and industrial maintenance professionals for dependable protection of critical power electronic equipment.
