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MERSEN FUSE A 130 URD 70 TTI 0250 A130URD70TTI0250
High-speed aR characteristic fuse with ceramic body, striker indication, flush ends with UNC threads, rated 250A at 1250VAC IEC and 1300VAC UL, suitable for semiconductor protection in industrial applications.
£74.29
Why Choose the Mersen X301021 Protistor® High-Speed Fuse?
The Mersen X301021 is a premium square body semiconductor protection fuse engineered to provide ultra-fast protection for sensitive power semiconductor devices including IGBTs, thyristors, GTOs and diodes. As part of the Mersen Protistor® Size 70 aR series, it delivers exceptional protection for high-voltage power conversion equipment operating in demanding industrial environments.
Manufactured using pure silver die-cut fuse elements embedded in solidified sand, the X301021 offers low energy let-through characteristics, excellent arc control and reliable interruption of high fault currents. Silver-plated contact surfaces, non-magnetic hardware, flush-end UNC threaded terminals and an integrated striker indicator ensure dependable operation and simplified maintenance.
With a 250 A current rating and a 1250 V AC IEC / 1300 V AC UL voltage rating, the Mersen X301021 is ideally suited for protecting industrial drives, converters, UPS systems, renewable energy equipment and other high-power electronic applications.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 250 A current rating for demanding industrial applications.
- 1250 V AC IEC / 1300 V AC UL voltage capability.
- 150 kA breaking capacity for dependable fault protection.
- Integrated striker indicator for simplified maintenance.
- Silver-plated flush-end UNC threaded terminals ensure secure electrical connections.
Key Features
- Mersen Protistor® Size 70 series.
- 250 A rated current.
- 1250 V AC IEC / 1300 V AC UL rated voltage.
- aR ultra-fast operating characteristic.
- Integrated striker indication system.
- Flush-end UNC threaded terminals.
- Square body bolted construction.
- Designed specifically for semiconductor protection.
Reliable Semiconductor Protection
High-speed semiconductor fuses are specifically designed to interrupt fault currents before expensive semiconductor devices can be damaged. Their ultra-fast response reduces thermal stress while maintaining the performance and reliability of industrial power conversion equipment.
The Mersen Protistor® range is trusted worldwide across industrial automation, renewable energy, transportation and manufacturing industries, providing dependable protection for drives, converters, rectifiers and UPS systems.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- Power converters and rectifiers.
- UPS systems.
- Renewable energy inverters.
- Industrial automation and power electronic equipment.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Voltage | 1250 V | |
| Item number | X301021 | |
| Catalogue No | A130UD70TTI250 | |
| Description | Square Body High-Speed Fuse Protistor® Size 70 aR 1250VAC IEC 1300VAC UL 250A With Striker Flush ends UNC threads | |
| EAN/UPC Code | 3605340335552 | |
| Rated voltage AC UL | 1300 V | |
| Rated voltage AC IEC | 1250 V | |
| Ampere Rating | 250 A | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 70 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 77000 A²s | |
| Melting I2t | 9580 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 | 1.05 kg | |
| Sell Pack Width | 85 mm | |
| Sell Pack Length | 135 mm | |
| Sell Pack Height | 550 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.35 kg | |
| Power Dissipation at Rated Current Value | 58 W | |
| HS Code | 85351000 |
Frequently Asked Questions
What is the Mersen X301021 used for?
The X301021 provides ultra-fast protection for semiconductor devices including IGBTs, thyristors, GTOs and diodes used in industrial power conversion equipment.
What is the current rating of the X301021?
This fuse has a 250 A current rating.
What voltage is the Mersen X301021 rated for?
The fuse is rated for 1250 V AC (IEC) and 1300 V AC (UL).
Does the X301021 include a blown fuse indicator?
Yes. The fuse incorporates an integrated striker indicator that can operate a compatible microswitch for remote indication.
Where is the Mersen X301021 typically installed?
It is commonly installed in industrial drives, converters, UPS systems, renewable energy equipment and other high-power semiconductor applications.
Trusted Protection for Industrial Power Electronics
Mersen Protistor® semiconductor protection fuses are trusted worldwide to safeguard critical power electronic equipment through rapid fault interruption, high breaking capacity and dependable long-term reliability.
