High-speed aR characteristic fuse designed for semiconductor protection with 315A rating, flush end striker indication, and metric threaded bolted connections.
£140.22
The Mersen V300490 (PC70UD12C315TF) is a Protistor® Size 70 ultra-fast square body semiconductor fuse designed to provide exceptional protection for sensitive power semiconductor devices operating in demanding industrial applications. Rated at 315A, 1200VAC (IEC) and 1300VAC (UL), this aR characteristic fuse delivers rapid fault clearing to minimise damage caused by short circuits.
Engineered specifically for power conversion equipment, the V300490 features a robust ceramic square body construction with flush-end metric threaded terminals and an integrated striker indicator for fast fuse status identification. Its low let-through energy (I²t) and high breaking capacity make it ideal for protecting IGBTs, thyristors, diodes and other semiconductor devices.
Manufactured by Mersen, a global leader in electrical protection technology, the V300490 combines proven reliability with international IEC and UL approvals, making it suitable for industrial installations worldwide.
The Protistor® range has been engineered to provide advanced protection for modern power conversion equipment where semiconductor devices require extremely rapid fault interruption. The V300490 helps reduce thermal and electrical stress during short-circuit conditions, improving equipment reliability and reducing downtime.
Its square body construction, silver-plated contact surfaces and high interrupting capability make it suitable for demanding industrial environments where dependable semiconductor protection is critical.
| Item number | V300490 |
|---|---|
| Catalogue No | PC70UD12C315TF |
| Description | Square Body High-Speed Fuse Protistor® Size 70 aR 1200VAC IEC 1300VAC UL 315A With Striker Flush ends metric threads |
| EAN/UPC Code | 3605340329193 |
| Rated voltage AC UL | 1300 V |
| Rated voltage AC IEC | 1200 V |
| Ampere Rating | 315 A |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 70 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 149000 A²s |
| Melting I2t | 20000 A²s |
| 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 | 39.8 mm |
| Product Length | 74 mm |
| Product Height | 49.5 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 1.017 kg |
| Sell Pack Width | 85 mm |
| Sell Pack Length | 133 mm |
| Sell Pack Height | 55 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.339 kg |
| Power Dissipation at Rated Current Value | 66 W |
| HS Code | 85351000 |
The Mersen V300490 (PC70UD12C315TF) is a Protistor® Size 70 ultra-fast square body semiconductor fuse rated at 315A for high-voltage AC power conversion equipment.
An aR fuse is designed specifically for semiconductor protection, providing extremely rapid short-circuit protection while allowing equipment to manage normal operating currents.
The V300490 is intended to protect semiconductor devices including IGBTs, thyristors, diodes and similar components used within power conversion equipment.
Yes. The fuse incorporates an integrated striker indicator to provide visual indication when the fuse has operated.
Typical applications include industrial drives, UPS systems, converters, renewable energy equipment and other power electronic installations requiring high-speed semiconductor protection.
The Mersen Protistor® range is widely specified worldwide for protecting high-value power semiconductor devices used in industrial automation, renewable energy, transportation and power conversion systems.
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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...