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MERSEN FUSE 12 URD 70 D11 A 0280 12URD70D11A0280
High-speed aR fuse with integrated striker indication, rated 280A, 1200VAC IEC, 1300VAC UL, featuring DIN 110 blade terminals and ceramic body for industrial semiconductor protection.
£74.60
Why Choose the Mersen J300710 Protistor® High-Speed Semiconductor Fuse?
The Mersen J300710 is a premium Protistor® Size 70 aR square body high-speed semiconductor fuse designed to provide advanced protection for modern power conversion equipment. Specifically engineered for safeguarding sensitive semiconductor devices, it delivers ultra-fast fault interruption and excellent current limiting to protect IGBTs, thyristors, GTOs, rectifiers and power diodes against damaging short-circuit currents.
Part of Mersen's globally trusted Protistor® semiconductor fuse range, the J300710 features pure silver fuse elements embedded in solidified sand, silver-plated contact surfaces and an integrated striker for remote indication. This robust construction provides dependable performance in demanding industrial environments while helping reduce maintenance costs and unplanned downtime.
With a 280 A rated current and a 1200 V AC IEC / 1300 V AC UL voltage rating, the J300710 is ideal for industrial drives, converters, inverters, UPS systems, renewable energy installations and other high-power semiconductor applications requiring reliable circuit protection.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 280 A current rating for demanding industrial applications.
- 1200 V AC IEC / 1300 V AC UL voltage rating.
- Excellent current-limiting characteristics minimise fault energy.
- Integrated striker for remote indication and monitoring.
- Designed to maximise semiconductor reliability and equipment uptime.
Key Features
- Mersen Protistor® Size 70 aR series.
- 280 A rated current.
- 1200 V AC (IEC) / 1300 V AC (UL) rated voltage.
- Square body fuse with DIN 110 blade connections.
- Integrated striker indicator.
- Pure silver fuse elements with silver-plated contacts.
- Solidified sand construction for controlled arc performance.
- Designed for protection of IGBTs, SCRs, GTOs, diodes and rectifiers.
Reliable Protection for Industrial Power Electronics
High-speed semiconductor fuses are specifically engineered to interrupt fault currents before excessive thermal or electrical energy reaches sensitive semiconductor devices. Their low let-through energy helps improve equipment reliability while reducing maintenance costs and minimising unplanned downtime.
The Mersen Protistor® Size 70 range is trusted worldwide by OEMs, panel builders and industrial engineers for demanding power conversion applications where dependable semiconductor protection is essential.
Typical Applications
- Variable frequency drives.
- Industrial motor control systems.
- Power converters and inverters.
- UPS systems.
- Renewable energy installations.
- Battery energy storage systems.
- Industrial power supplies.
- Semiconductor protection circuits.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Voltage | 1200 V | |
| Item number | J300710 | |
| Catalogue No | PC70UD12C280D1A | |
| Description | Square Body High-Speed Fuse Protistor® Size 70 aR 1200VAC IEC 1300VAC UL 280A With Striker DIN 110 Blades | |
| EAN/UPC Code | 3605340332520 | |
| Rated voltage AC UL | 1300 V | |
| Rated voltage AC IEC | 1200 V | |
| Ampere Rating | 280 A | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 70 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 106000 A²s | |
| Melting I2t | 14200 A²s | |
| AC Max I.R./Breaking Capacity | I1: 150 kA | |
| Indication System | Yes | |
| Indication System Type | Striker | |
| Connection/Terminal Material | Silver-Plated Copper | |
| Connection/Terminal Type | DIN 110 Blades | |
| Product Width | 39.8 mm | |
| Product Length | 133.4 mm | |
| Product Height | 49.5 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 1.0899 kg | |
| Sell Pack Width | 130 mm | |
| Sell Pack Length | 140 mm | |
| Sell Pack Height | 50 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.3633 kg | |
| Power Dissipation at Rated Current Value | 64 W | |
| HS Code | 85351000 |
Frequently Asked Questions
What is the Mersen J300710 used for?
The J300710 is designed to protect power semiconductor devices such as IGBTs, thyristors, GTOs, rectifiers and diodes from damaging short-circuit currents.
What is the current rating of this fuse?
The fuse has a rated current of 280 A for industrial semiconductor protection applications.
What voltage is the J300710 designed for?
It is rated for 1200 V AC (IEC) and 1300 V AC (UL) systems.
What does the aR fuse characteristic mean?
The aR operating characteristic provides ultra-fast short-circuit protection specifically for semiconductor devices without overload protection.
Where is this fuse commonly installed?
It is commonly installed in industrial drives, converters, UPS systems, renewable energy equipment and other high-power power conversion applications.
Trusted by Industrial Engineers Worldwide
Mersen Protistor® semiconductor fuses are trusted worldwide for delivering dependable, ultra-fast protection for industrial power electronics, helping maximise equipment availability and protect valuable semiconductor devices.
