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MERSEN FUSE CC 7,5 GRC 2122 TTF 0630 CC75GRC2122TTF0630
High-speed fuse with 630A rating at 750VDC, gR characteristic, ceramic body, integrated striker, and metric threads for bolted mounting. Suitable for semiconductor protection and industrial DC power applications.
£851.38
Why Choose the Mersen R090474 Protistor® High-Speed Fuse?
The Mersen R090474 (D2122GC75V630TF) is a Protistor® square body high-speed semiconductor fuse developed to provide exceptional protection for modern power electronic equipment operating on demanding DC systems. It is specifically designed to protect IGBTs, thyristors, diodes and other semiconductor devices against damaging short-circuit currents while minimising let-through energy and reducing downtime.
Part of the Protistor® Size 2x122 gR 750 VDC series, this fuse features a robust square-body ceramic construction with flush-end metric threaded terminals and an integrated striker for remote fuse indication. The design provides excellent cycling capability, low power losses and long service life in railway and industrial DC applications.
Rated at 630 A and 750 V DC (IEC), with a 100 kA DC breaking capacity, the R090474 is ideally suited to railway traction equipment, battery energy storage systems, industrial converters, UPS systems and renewable energy installations.
Key Advantages
- High-speed gR semiconductor protection.
- 630 A current rating.
- 750 V DC (IEC) voltage rating.
- 100 kA DC interrupting capacity.
- Very low I²t for superior semiconductor protection.
- Integrated striker for remote indication.
- Flush-end metric threaded terminals for secure installation.
- Long operating life with low power dissipation.
Key Features
- Manufacturer: Mersen.
- Series: Protistor® Size 2x122 gR.
- Item number: R090474.
- Catalogue number: D2122GC75V630TF.
- Square body high-speed semiconductor fuse.
- Flush-end metric threaded terminals.
- Integrated striker indication.
- Designed for demanding DC power applications.
Reliable Protection for High-Power DC Systems
High-speed semiconductor fuses are designed specifically to protect expensive semiconductor devices by interrupting extremely high fault currents before thermal damage occurs. Their rapid operation significantly reduces electrical stress, helping extend equipment life and minimise costly downtime.
The Protistor® DC range has been developed for railway power and auxiliary circuits together with industrial DC installations where dependable protection of semiconductor devices is essential.
Typical Applications
- Railway traction and auxiliary power systems.
- Industrial DC drives.
- Battery energy storage systems (BESS).
- Power converters and rectifiers.
- UPS installations.
- Renewable energy converters.
- Protection of IGBTs, thyristors, diodes and power semiconductors.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Size | 2x122 mm | |
| Fuse Class | gR | |
| Voltage | 750 V | |
| Item number | R090474 | |
| Catalogue No | D2122GC75V630TF | |
| Description | Square Body High-Speed Fuse Protistor® Size 2x122 gR 750VDC IEC 630A With Striker metric threads | |
| EAN/UPC Code | 3605340090345 | |
| Rated voltage DC IEC | 750 V | |
| Ampere Rating | 630 A | |
| RoHS Compliant | Yes | |
| AC or DC | DC | |
| Speed/Characteristic | gR | |
| Fuse Size | 2x122 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 8000 kA²s | |
| Max. Rated Breaking Capacity DC | 100 kA | |
| Design Details | gRC | |
| Indication System | Yes | |
| Indication System Type | Striker | |
| Connection/Terminal Material | Brass | |
| Connection/Terminal Type | Flush ends | |
| Product Width | 131 mm | |
| Product Length | 148 mm | |
| Product Height | 63 mm | |
| Sell Pack Quantity | 1 EA | |
| Sell Pack Weight | 2.8 kg | |
| Sell Pack Width | 188 mm | |
| Sell Pack Length | 201 mm | |
| Sell Pack Height | 82 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 2.8 kg | |
| Power Dissipation at Rated Current Value | 116 W | |
| HS Code | 85361090 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen R090474 used for?
The R090474 is a high-speed semiconductor fuse designed to protect power electronic devices including IGBTs, thyristors and rectifiers against damaging short-circuit currents.
What is the current rating?
The Mersen R090474 has a rated current of 630 A.
What voltage is the fuse rated for?
It is rated for 750 V DC (IEC).
Does the fuse include a striker?
Yes. The R090474 incorporates an integrated striker that provides remote fuse indication.
Where is this fuse commonly installed?
Typical applications include railway equipment, battery storage systems, industrial converters, UPS systems, renewable energy equipment and other high-power DC semiconductor protection applications.
Trusted Mersen Semiconductor Protection
The Mersen Protistor® R090474 combines rapid fault interruption, low let-through energy and proven long-term reliability, making it an excellent choice for protecting high-value semiconductor equipment in demanding DC power applications.
