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MERSEN FUSE 6,9 URD 32 TT F 0800 6,9URD32TTF0800
High-speed fuse designed for semiconductor protection with a rated voltage of 690VAC (IEC) and 700VAC (UL), 800A current rating, integrated striker for indication, flush ends with metric threads, and ceramic insulating body.
£122.93
Why Choose the Mersen P300071 Protistor® High-Speed Fuse?
The Mersen P300071 is a Protistor® Size 32 aR high-speed square body fuse designed to provide exceptional protection for semiconductor devices used in modern power conversion equipment. Manufactured by Mersen, this fuse features an 800A current rating, 690VAC IEC / 700VAC UL voltage rating and flush-end metric threaded terminals with an integrated striker, making it ideal for demanding industrial applications.
Engineered specifically for the protection of diodes, thyristors and IGBT devices, the P300071 delivers low let-through energy (I²t), high interrupting capacity and ultra-fast fault clearing to minimise damage during short-circuit conditions. It is widely used in variable speed drives, UPS systems, industrial inverters, converters and other power electronic equipment.
Protistor® semiconductor fuses are manufactured using die-cut silver elements embedded in solidified silica sand, providing controlled arc extinction, excellent reliability and consistent protection under demanding industrial operating conditions. Silver-plated contact surfaces and non-magnetic hardware further enhance long-term performance.
Key Advantages
- Ultra-fast aR semiconductor protection.
- 800A current rating.
- 690VAC IEC / 700VAC UL voltage rating.
- Protistor® Size 32 square body design.
- Flush-end metric threaded terminals with integrated striker.
- Excellent protection for IGBT, diode and thyristor devices.
- Low I²t reduces semiconductor damage during fault conditions.
- Manufactured by Mersen for demanding industrial environments.
Key Features
- Manufacturer: Mersen.
- Item number: P300071.
- Catalogue number: PC32UD69V800TF.
- Series: Protistor® Size 32.
- Fuse class: aR ultra-fast semiconductor fuse.
- Square body industrial fuse.
- Flush-end metric threaded terminals.
- Integrated striker indicator.
Designed for Semiconductor Protection
Unlike conventional industrial fuses, Protistor® aR semiconductor fuses are specifically engineered to protect sensitive power electronic devices. Their extremely fast operating characteristics minimise thermal and electrical stress during fault conditions, helping to extend the service life of expensive semiconductor components.
The P300071 is suitable for variable speed drives, soft starters, industrial UPS systems, renewable energy converters, power supplies and other power conversion equipment where fast semiconductor protection is essential.
Typical Applications
- Variable speed drives (VSDs).
- Industrial inverters and converters.
- UPS systems.
- Soft starters.
- Renewable energy power converters.
- Industrial power supplies.
- Motor drives.
- Semiconductor protection circuits.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Voltage | 690 V | |
| Item number | P300071 | |
| Catalogue No | PC32UD69V800TF | |
| Description | Square Body High-Speed Fuse Protistor® Size 32 aR 690VAC IEC 700VAC UL 800A With Striker Flush ends metric threads | |
| EAN/UPC Code | 3605340323023 | |
| Rated voltage AC UL | 700 V | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 800 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 32 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 660 kA²s | |
| Melting I2t | 115 kA²s | |
| AC Max I.R./Breaking Capacity | I1: 200 kA | |
| Design Details | Standard Terminal | |
| Indication System | Yes | |
| Indication System Type | Striker | |
| Connection/Terminal Material | Silver-Plated Brass | |
| Connection/Terminal Type | Flush ends | |
| Product Width | 59 mm | |
| Product Length | 50.6 mm | |
| Product Height | 65 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 1.6389 kg | |
| Sell Pack Width | 85 mm | |
| Sell Pack Length | 195 mm | |
| Sell Pack Height | 75 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.5463 kg | |
| Power Dissipation at Rated Current Value | 110 W | |
| HS Code | 85361090 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen P300071 designed for?
The P300071 is a Protistor® aR high-speed fuse designed specifically to protect semiconductor devices such as IGBTs, diodes and thyristors against short-circuit faults.
What is the current rating?
The Mersen P300071 has a rated current of 800A.
What voltage is the P300071 rated for?
It is rated for 690VAC IEC and 700VAC UL.
What mounting style does this fuse use?
The fuse uses flush-end metric threaded terminals together with an integrated striker indicator.
Where is the P300071 typically used?
Typical applications include industrial drives, UPS systems, inverters, converters, soft starters and other semiconductor-based power conversion equipment.
Trusted Protistor® Protection from Mersen
Mersen Protistor® semiconductor fuses are trusted worldwide by equipment manufacturers, panel builders and maintenance engineers to deliver ultra-fast protection for high-value semiconductor devices used in demanding industrial power conversion systems.
