The PC71GB69V500TF fuse delivers reliable, rapid protection for critical power electronics, supporting up to 500A at 690VAC. Its gR characteristic provides full-range protection for both overloads and short circuits, ensuring maximum system uptime and equipment safety.
£192.93
The Mersen S301707 (PC71GB69V500TF) is a Protistor® Size 71 gR high-speed square body semiconductor fuse engineered to provide full-range protection for power semiconductors and power conversion equipment. Rated at 690VAC and 500A, it delivers rapid fault interruption to protect sensitive electronic components from overloads and short circuits while maintaining maximum system reliability.
Manufactured using pure silver fuse elements embedded in solidified sand, the S301707 provides low I²t performance and a high breaking capacity to minimise damage during fault conditions. Silver-plated contact surfaces, a ceramic body and an integrated striker indicator make it ideal for demanding industrial applications.
Suitable for variable speed drives, UPS systems, inverters, rectifiers and other power electronic equipment, the Mersen S301707 offers dependable semiconductor protection in accordance with IEC standards.
The Mersen Protistor® S301707 has been specifically developed for protecting semiconductor devices used within industrial power conversion systems. Its low I²t characteristics and rapid fault-clearing capability help minimise thermal and electrical stress on valuable electronic components, improving equipment reliability while reducing downtime.
| Item number | S301707 |
|---|---|
| Catalogue No | PC71GB69V500TF |
| Description | Square Body High-Speed Fuse Protistor® Size 71 gR 690VAC IEC 500A With Striker Flush ends metric threads |
| EAN/UPC Code | 3605340345476 |
| Rated voltage AC IEC | 690 V |
| Ampere Rating | 500 A |
| RoHS Compliant | Yes |
| AC or DC | AC |
| Speed/Characteristic | gR |
| Fuse Size | 71 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 460 kA²s |
| Melting I2t | 78.1 kA²s |
| AC Max I.R./Breaking Capacity | I1: 150 kA |
| Indication System | Yes |
| Indication System Type | Striker |
| Connection/Terminal Material | Silver-Plated Brass |
| Connection/Terminal Type | Flush ends |
| Product Width | 51 mm |
| Product Length | 74 mm |
| Product Height | 56.5 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 1.542 kg |
| Sell Pack Width | 90 mm |
| Sell Pack Length | 170 mm |
| Sell Pack Height | 70 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.514 kg |
| Power Dissipation at Rated Current Value | 64 W |
| HS Code | 85361090 |
| Country of Manufacture | France |
The Mersen S301707 is a Protistor® Size 71 high-speed square body semiconductor fuse rated at 690VAC and 500A with full-range gR protection.
The gR operating class provides full-range semiconductor protection against both overloads and short circuits.
Yes. The S301707 incorporates an integrated striker indicator for visual indication and optional remote signalling.
The fuse features flush ends with metric threaded connections for secure bolted installation.
Typical applications include industrial drives, converters, UPS systems, renewable energy inverters and other semiconductor-based power electronic equipment.
Mersen Protistor® semiconductor fuses are trusted worldwide for protecting critical power electronics, providing rapid fault interruption, high breaking capacity and dependable performance in demanding industrial environments.
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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...