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MERSEN FUSE A 070 URD 30 TTI 0550 A070URD30TTI0550
High-speed aR-class Protistor® fuse with 550A rating, flush ends with UNC threads, integrated striker indication system for semiconductor protection.
£93.17
Why Choose the Mersen X300584 Protistor® High-Speed Fuse?
The Mersen X300584 is a premium square body semiconductor protection fuse engineered to provide ultra-fast protection for sensitive power semiconductor devices including IGBTs, thyristors, MOSFETs and diodes. As part of the proven Mersen Protistor® Size 30 aR series, it delivers exceptional short-circuit protection for industrial power conversion and automation systems.
Designed with low energy let-through characteristics and high interrupting capacity, the X300584 helps minimise damage to expensive semiconductor components while improving equipment reliability and reducing downtime. Its square body construction incorporates silver-plated contacts, flush-end UNC threaded terminals and an integrated striker indicator for simplified maintenance and remote status indication.
With a 550 A current rating and a 690 V AC IEC / 700 V AC UL voltage rating, the Mersen X300584 is ideally suited for protecting industrial drives, UPS systems, converters, renewable energy equipment and other demanding power electronic applications.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 550 A current rating for demanding industrial applications.
- 690 V AC IEC / 700 V AC UL voltage capability.
- 200 kA breaking capacity for outstanding fault protection.
- Integrated striker indicator for simplified maintenance.
- Silver-plated contact surfaces provide excellent electrical performance.
Key Features
- Mersen Protistor® Size 30 series.
- 550 A rated current.
- 690 V AC IEC / 700 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 engineered to interrupt fault currents before expensive semiconductor devices can be damaged. Their ultra-fast response minimises thermal stress while helping maintain 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 | 690 V | |
| Item number | X300584 | |
| Catalogue No | A070UD30TTI550 | |
| Description | Square Body High-Speed Fuse Protistor® Size 30 aR 690VAC IEC 700VAC UL 550A With Striker Flush ends UNC threads | |
| EAN/UPC Code | 3605340330649 | |
| Rated voltage AC UL | 700 V | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 550 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 30 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 330 kA²s | |
| Melting I2t | 52 kA²s | |
| AC Max I.R./Breaking Capacity | I1: 200 kA | |
| Indication System | Yes | |
| Indication System Type | Striker | |
| Connection/Terminal Material | Silver-Plated Brass | |
| Connection/Terminal Type | Flush ends | |
| Product Width | 40 mm | |
| Product Length | 50.6 mm | |
| Product Height | 48 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 0.765 kg | |
| Sell Pack Width | 80 mm | |
| Sell Pack Length | 135 mm | |
| Sell Pack Height | 55 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.255 kg | |
| Power Dissipation at Rated Current Value | 80 W | |
| HS Code | 85361090 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen X300584 used for?
The X300584 provides ultra-fast protection for semiconductor devices including IGBTs, MOSFETs, thyristors and diodes used in industrial power conversion equipment.
What is the current rating of the X300584?
This fuse has a 550 A current rating.
What voltage is the Mersen X300584 rated for?
The fuse is rated for 690 V AC (IEC) and 700 V AC (UL).
Does the X300584 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 X300584 typically installed?
It is commonly installed in industrial drives, converters, UPS systems, renewable energy equipment and other power electronic applications requiring semiconductor protection.
Trusted Protection for Industrial Power Electronics
Mersen Protistor® semiconductor protection fuses are trusted worldwide to safeguard critical power electronic equipment by delivering rapid fault interruption, high breaking capacity and dependable long-term performance.
