Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
MERSEN FUSE 621 CP URGD 27.60 250 621CPURGD27.60/250
Engineered for precision protection in demanding industrial applications, this 250A cylindrical fuse ensures rapid response to short-circuit conditions, maximising system safety and minimising downtime. Fully compliant with IEC standards, it offers superior current-limiting performance at up to 600VAC, making it ideal for safeguarding power semiconductors and sensitive components.
£50.34
Why Choose the Mersen W076264 Semiconductor Fuse?
The Mersen W076264, catalogue number FR27UD60V250T, is an ultra-fast Protistor® semiconductor fuse designed to protect sensitive power semiconductor devices against high short-circuit currents. It features an aR utilisation category, a rated current of 250 A and a rated voltage of 600 V AC (IEC), making it ideal for demanding industrial power electronic applications.
Manufactured in a 27 × 60 mm cylindrical format, the W076264 incorporates an integrated striker indicator for rapid fuse-status indication and optional remote signalling. Its low let-through energy and extremely high breaking capacity help minimise damage to valuable semiconductor devices including IGBTs, thyristors, diodes and rectifier modules.
Designed in accordance with IEC 60269-1 and IEC 60269-4, the W076264 is widely used in variable speed drives, UPS systems, industrial converters and power supplies where dependable semiconductor protection is essential.
Key Advantages
- Genuine Mersen Protistor® semiconductor fuse.
- 250 A rated current with 600 V AC IEC rating.
- aR utilisation category for semiconductor short-circuit protection.
- Integrated striker enables rapid fuse-status indication.
- Extremely high 200 kA breaking capacity.
- Low I²t reduces thermal stress on power semiconductors.
- Compact 27 × 60 mm cylindrical construction.
- Complies with IEC 60269-1 and IEC 60269-4.
Key Features
- Mersen W076264 / FR27UD60V250T.
- Protistor® ultra-fast semiconductor fuse.
- 250 A rated current.
- 600 V AC IEC rated voltage.
- aR utilisation category.
- Integrated mechanical striker indicator.
- 27 × 60 mm cylindrical ceramic body.
- Silver-plated copper ferrule terminals.
- Clip mounting.
- Suitable for industrial semiconductor protection.
Engineered for High-Power Semiconductor Protection
The Mersen W076264 has been developed to provide dependable protection for high-power semiconductor equipment where extremely rapid fault clearance is critical. Its aR operating characteristics limit fault energy during short-circuit conditions, helping protect expensive power electronic devices and reduce equipment downtime.
The integrated striker enables quick visual identification of an operated fuse and can be used with compatible auxiliary signalling devices to simplify maintenance in industrial installations.
Typical Applications
- Variable speed drives.
- Industrial inverters and converters.
- Rectifier equipment.
- UPS systems.
- Motor control centres.
- Power semiconductor protection.
Technical Specifications
Tick the specs you need, then view products that match.
| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Size | 27x60 mm | |
| Fuse Class | aR | |
| Voltage | 600 V | |
| Item number | W076264 | |
| Catalogue No | FR27UD60V250T | |
| Description | High-Speed Cylindrical Fuse Protistor® Size 27x60 aR 600VAC IEC 250A With Striker | |
| EAN/UPC Code | 3605340016017 | |
| Rated voltage AC IEC | 600 V | |
| Ampere Rating | 250 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 27x60 | |
| Mounting | Clip | |
| Clearing I2t At Rated Voltage | 107 kA²s | |
| Melting I2t | 29.6 kA²s | |
| AC Max I.R./Breaking Capacity | I1: 200 kA | |
| Design Details | URGD | |
| Indication System | Yes | |
| Indication System Type | Striker | |
| Connection/Terminal Material | Silver-Plated Copper | |
| Connection/Terminal Type | Ferrule | |
| Product Diameter | 27 mm | |
| Product Length | 60.3 mm | |
| Sell Pack Quantity | 10 EA | |
| Sell Pack Weight | 0.8 kg | |
| Sell Pack Width | 123 mm | |
| Sell Pack Length | 138 mm | |
| Sell Pack Height | 30 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.08 kg | |
| Power Dissipation at Rated Current Value | 40 W | |
| HS Code | 85361090 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen W076264 used for?
The W076264 is an ultra-fast semiconductor fuse designed to protect power electronic devices against damaging short-circuit currents.
What is the current rating of the W076264?
The fuse has a rated current of 250 A.
What voltage is the W076264 rated for?
The fuse is rated for applications operating at up to 600 V AC (IEC).
What does the aR classification mean?
The aR utilisation category identifies a semiconductor fuse designed specifically for short-circuit protection. Separate overload protection should be provided where required.
Does the W076264 include a fuse indicator?
Yes. The fuse incorporates an integrated mechanical striker that provides local indication and can operate compatible remote signalling accessories.
Trusted Semiconductor Protection from Mersen
Mersen Protistor® semiconductor fuses are trusted by electrical engineers, OEMs and panel builders worldwide for protecting industrial power electronic equipment operating in demanding environments.
