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MERSEN FUSE 12 URD 70 TT F 0315 12URD70TTF0315
High-speed aR characteristic fuse designed for semiconductor protection with 315A rating, flush end striker indication, and metric threaded bolted connections.
£84.13
Why Choose the Mersen V300490 PC70UD12C315TF High-Speed Fuse?
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.
Key Advantages
- Genuine Mersen Protistor® semiconductor protection fuse.
- Ultra-fast aR characteristic for semiconductor protection.
- 315A current rating.
- 1200VAC IEC / 1300VAC UL voltage rating.
- Integrated striker indicator for fuse operation indication.
- Square body Size 70 design with flush-end metric threaded terminals.
- Low I²t limits damage during fault conditions.
- Suitable for demanding industrial power electronics.
Key Features
- Manufacturer: Mersen
- Part number: V300490
- Catalogue number: PC70UD12C315TF
- Fuse series: Protistor® Size 70
- Fuse characteristic: aR ultra-fast semiconductor protection
- Current rating: 315A
- Rated voltage (IEC): 1200VAC
- Rated voltage (UL): 1300VAC
- Terminal style: Flush ends with metric threaded connections
- Indication system: Integrated striker
- Suitable for: Protection of power semiconductor devices
Designed for Modern Power Electronics
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.
Typical Applications
- Variable speed drives.
- Industrial inverters.
- Power converters.
- UPS systems.
- Soft starters.
- Motor drives.
- Renewable energy converters.
- Semiconductor protection circuits.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Voltage | 1200 V | |
| 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 |
Frequently Asked Questions
What is the Mersen V300490?
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.
What does the aR fuse characteristic mean?
An aR fuse is designed specifically for semiconductor protection, providing extremely rapid short-circuit protection while allowing equipment to manage normal operating currents.
Which equipment is this fuse designed to protect?
The V300490 is intended to protect semiconductor devices including IGBTs, thyristors, diodes and similar components used within power conversion equipment.
Does the fuse include an operation indicator?
Yes. The fuse incorporates an integrated striker indicator to provide visual indication when the fuse has operated.
Where is the V300490 commonly used?
Typical applications include industrial drives, UPS systems, converters, renewable energy equipment and other power electronic installations requiring high-speed semiconductor protection.
Trusted 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.
