Why Choose the MERSEN FUSE 6,9 URGL 36 T 180 BS36UL69V180T?
£93.10
The Mersen P097257 is an ultra-rapid Protistor® high-speed semiconductor fuse-link engineered to protect sensitive power electronic components against damaging fault currents. Also identified as BS36UL69V180T, it provides effective current limitation and a high interrupting capacity for demanding industrial power conversion equipment.
Featuring an aR partial-range operating class, the P097257 is specifically designed for semiconductor short-circuit protection. Its rapid operating characteristics help restrict peak fault current and let-through energy, reducing electrical, thermal and mechanical stress on diodes, thyristors, rectifiers, IGBTs and associated circuit components.
With a rated current of 180 A and a rated voltage of 690 V AC, the Mersen P097257 is suitable for variable frequency drives, industrial converters, rectifiers, inverters and uninterruptible power supplies. Its 36 × 55 mm British Standard body, bolted L-bracket terminals and integrated striker provide secure installation and convenient fuse-operation indication.
The Mersen P097257 is designed to interrupt dangerous short-circuit currents before excessive energy can reach sensitive semiconductor devices. Its current-limiting performance reduces peak fault current and total let-through energy, helping protect valuable power modules and minimise secondary damage within industrial equipment.
The fuse element is engineered for rapid response to high fault currents while maintaining dependable operation under normal circuit conditions. This makes the P097257 particularly suitable for equipment in which conventional industrial fuses may not operate quickly enough to protect semiconductor junctions.
The P097257 uses bolted L-bracket terminals to provide a secure electrical and mechanical connection within compatible fuse assemblies. This robust mounting arrangement is well suited to industrial installations exposed to high currents, vibration and repeated operating cycles.
An integrated striker provides a clear indication when the fuse has operated. The striker may also actuate a compatible microswitch, allowing the fuse status to be incorporated into an alarm, monitoring or control circuit for faster fault identification.
As an aR-class fuse-link, the Mersen P097257 provides partial-range protection specifically against semiconductor short-circuit currents. Suitable supplementary overload protection should therefore be incorporated where protection against sustained overload conditions is also required.
Before installation, confirm that the circuit voltage, operating current, prospective fault current, fuse dimensions, mounting arrangement and semiconductor withstand values are compatible with the P097257. Always follow the equipment manufacturer's fuse-selection requirements.
| Manufacturer | Mersen |
|---|---|
| Series | Protistor® URGL |
| Model | P097257 |
| Alternative product SKU | BS36UL69V180T |
| Catalogue designation | 6,9 URGL 36 T 180 |
| Product type | High-speed semiconductor fuse-link |
| Rated current | 180 A |
| Rated voltage | 690 V AC |
| Operating class | aR |
| Breaking capacity | Up to 200 kA AC |
| Fuse body size | 36 × 55 mm |
| Construction | British Standard high-speed fuse-link |
| Terminal configuration | Bolted L-bracket terminals |
| Mounting type | Bolted installation |
| Indication system | Integrated striker |
| Protection type | Semiconductor short-circuit protection |
| Applicable standard | BS semiconductor fuse format |
| EAN-13 | 3605340144482 |
| Factory pack quantity | 3 |
The Mersen P097257 provides ultra-rapid short-circuit protection for semiconductor devices used in drives, rectifiers, converters, inverters, power supplies and other industrial power electronic equipment.
The fuse has a nominal current rating of 180 A.
The Mersen P097257 is rated for operation at up to 690 V AC.
The aR classification identifies a partial-range fuse designed to interrupt semiconductor short-circuit currents rapidly. Separate overload protection may be required.
Yes. The P097257 includes an integrated striker that provides fuse-operation indication and can actuate compatible auxiliary signalling equipment.
The alternative product reference is BS36UL69V180T. It is also identified by the catalogue designation 6,9 URGL 36 T 180.
Yes. It can protect compatible semiconductor stages within variable frequency drives, provided its voltage, current, operating characteristics and energy-limiting values meet the drive manufacturer's requirements.
Mersen Protistor® high-speed fuse-links are widely specified by OEMs, panel builders and industrial engineers for dependable protection of critical semiconductor and power conversion equipment.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...