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MERSEN FUSE A 070 URD 31 LLI 0500 A070UD31LLI500
Why Choose the MERSEN FUSE A 070 URD 31 LLI 0500 A070UD31LLI500?
Why Choose the Mersen Q300164 Protistor® High-Speed Fuse?
The Mersen Q300164 is a genuine Protistor® Size 31 square body high-speed semiconductor fuse designed to provide exceptional protection for sensitive power electronic equipment operating in demanding industrial environments. This fuse is identified by the catalogue number A070UD31LI500 and features an ultra-fast aR operating characteristic, making it ideal for protecting IGBTs, thyristors, diodes and other semiconductor devices from damaging short-circuit currents.
As part of the trusted Mersen Protistor® Size 31 range, the Q300164 combines rapid fault clearing, low let-through energy and a high breaking capacity to maximise equipment reliability whilst minimising costly downtime. Its robust ceramic square body and silver-plated contact blades make it well suited to industrial power conversion equipment, motor drives and renewable energy systems.
With a 500 A current rating and 690 V AC IEC / 700 V AC UL voltage ratings, the Mersen Q300164 provides dependable semiconductor protection for converters, UPS systems, inverters, variable speed drives and industrial automation equipment.
Key Advantages
- Genuine Mersen Protistor® semiconductor protection fuse.
- 500 A current rating.
- 690 V AC IEC / 700 V AC UL rated operation.
- Ultra-fast aR characteristic for semiconductor protection.
- High interrupting capacity for demanding industrial applications.
- Designed for reliable long-term protection of power electronic equipment.
Key Features
- Manufacturer: Mersen.
- Manufacturer part number: Q300164.
- Catalogue number: A070UD31LI500.
- Protistor® Size 31 semiconductor fuse.
- 500 A current rating.
- 690 V AC IEC / 700 V AC UL.
- aR ultra-fast operating characteristic.
- Long slotted blade terminals with striker indicator.
Advanced Semiconductor Protection
Protistor® semiconductor fuses are specifically engineered to protect sensitive power electronic devices against destructive short-circuit currents. Their low let-through energy helps minimise damage, reduce downtime and extend the service life of expensive industrial equipment.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- Power converters and inverters.
- UPS systems.
- Renewable energy installations.
- Industrial automation and process control equipment.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Device Type | Fuse link | |
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Current | 500 A | |
| Voltage | 690 V | |
| Manufacturer | Mersen | |
| Series | Protistor® Size 31 | |
| Model | Q300164 | |
| Catalogue number | A070UD31LI500 | |
| Product type | Square body semiconductor fuse | |
| Fuse characteristic | aR ultra-fast | |
| Rated current | 500 A | |
| Rated voltage (IEC) | 690 V AC | |
| Rated voltage (UL) | 700 V AC | |
| Terminal style | Long slotted blades | |
| Indicator | Striker | |
| RoHS compliant | Yes |
Frequently Asked Questions
What is the Mersen Q300164 used for?
It is a high-speed semiconductor fuse designed to protect IGBTs, thyristors, diodes and other semiconductor devices from short-circuit faults.
What is the current rating of the Q300164?
The Mersen Q300164 has a 500 A current rating.
What voltage is the Q300164 rated for?
The fuse is rated at 690 V AC (IEC) and 700 V AC (UL).
What does the aR characteristic mean?
The aR characteristic provides ultra-fast protection specifically for semiconductor devices against short-circuit currents.
Where is this fuse commonly installed?
It is widely used in industrial motor drives, converters, UPS systems, inverters and other semiconductor-based power conversion equipment.
Trusted Semiconductor Protection Worldwide
Mersen Protistor® semiconductor fuses are trusted globally by OEMs, panel builders and industrial engineers to protect modern power electronic equipment in demanding applications.
