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MERSEN FUSE SI TT 70/71 C301233
Why Choose the Mersen C301233 SI TT 70/71 High-Voltage Fuse Holder?
£77.07
Why Choose the Mersen C301233 High-Speed Semiconductor Fuse?
The Mersen C301233 is a Protistor® Size 33 high-speed semiconductor fuse engineered to provide exceptional protection for modern power electronic equipment. Designed specifically for semiconductor applications, it delivers ultra-fast fault interruption to protect sensitive components including IGBTs, thyristors, SCRs and rectifier diodes from damaging short-circuit currents. The Protistor® Size 33 range is designed for maximum flexibility in equipment design while providing outstanding semiconductor protection.
Constructed using precision die-cut fuse elements embedded in solidified sand with silver-plated contact surfaces and non-magnetic hardware, the fuse offers excellent current-limiting performance, low let-through energy and high interrupting capacity. These features help minimise thermal stress on expensive semiconductor devices whilst improving equipment reliability.
The Mersen C301233 is suitable for OEM equipment, maintenance and replacement applications where the electrical ratings, mounting style and physical dimensions correspond with the original fuse. Always verify the current rating, voltage rating and mounting configuration against the equipment documentation or official Mersen datasheet before installation.
Key Advantages
- Ultra-fast semiconductor protection for industrial power electronics.
- Current-limiting design reduces damage to sensitive semiconductor devices.
- Low let-through energy helps minimise thermal stress.
- High interrupting capacity for demanding industrial installations.
- Designed for protecting IGBTs, SCRs, thyristors and rectifier diodes.
- Manufactured by Mersen, a recognised global leader in electrical protection.
Key Features
- Mersen Protistor® Size 33 semiconductor fuse.
- Ultra-fast aR operating characteristic.
- Square body industrial construction.
- Current-limiting performance.
- Silver-plated contact surfaces.
- Solidified sand arc-quenching construction.
- Available with striker indication depending on configuration.
- Suitable for high-power semiconductor protection applications.
Designed for Critical Semiconductor Protection
The Protistor® Size 33 family has been developed specifically for protecting modern power semiconductor devices operating in demanding industrial environments. Its ultra-fast current-limiting characteristics reduce fault energy before sensitive electronic components can be damaged, helping improve equipment reliability while reducing maintenance costs and downtime.
Typical applications include industrial drives, UPS systems, renewable energy converters, power supplies, motor control centres and high-power conversion equipment requiring dependable semiconductor protection.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- Power converters and inverters.
- UPS and standby power systems.
- Renewable energy converters.
- Industrial automation and process control equipment.
Technical Specifications
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| Phase | Single Phase | |
|---|---|---|
| Poles | 1-pole | |
| Model / Part Number | C301233 (SI TT 70/71 fuse holder) | |
| Pole Configuration | Single‑pole (1P) | |
| Voltage Rating | 2,500 VAC | |
| Mounting Style | DIN rail or panel mount | |
| Fuse Series Compatibility | SI TT‑70 and SI TT‑71 series | |
| Weight | ~0.691 kg per unit | |
| Construction | High-durability thermoplastic with screw-type terminals | |
| Compliance | IEC 60269, RoHS compliant |
Frequently Asked Questions
What is the Mersen C301233 used for?
The Mersen C301233 is designed to provide ultra-fast protection for semiconductor devices used in industrial power electronic equipment.
Which devices can this fuse protect?
It is intended for protecting IGBTs, thyristors, SCRs, rectifier diodes and similar semiconductor power devices.
Why use a semiconductor fuse?
Semiconductor fuses operate significantly faster than conventional industrial fuses, reducing fault energy before expensive electronic components can be damaged.
Where is the C301233 typically installed?
Typical installations include industrial drives, inverters, converters, UPS systems, renewable energy equipment and other high-power semiconductor applications.
Should replacement specifications match the original fuse?
Yes. Always ensure the replacement fuse matches the original current rating, voltage rating, operating characteristic, body size and mounting arrangement specified by the equipment manufacturer.
Trusted Semiconductor Protection
Mersen Protistor® semiconductor fuses are trusted worldwide by OEMs, panel builders and industrial maintenance engineers for protecting valuable power electronic equipment in demanding industrial environments.
