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MERSEN FUSE 6,9 URD 3 PV 0450 6,9URD3PV450
The Protistor® NH3UD69V450PV offers rapid, reliable short-circuit protection for high-power industrial applications, ensuring critical components are safeguarded in demanding environments. Designed for operation at up to 690VAC (IEC) / 700VAC (UL) and rated at 450A, it delivers consistent high-speed performance and minimal let-through energy.
£95.77
Why Choose the Mersen NH3UD69V450PV Protistor® High-Speed Fuse?
The Mersen NH3UD69V450PV is a premium NH Size 3 square body high-speed semiconductor protection fuse from the industry-leading Mersen Protistor® series. Specifically engineered to protect sensitive power electronic equipment, this ultra-fast aR fuse safeguards IGBTs, thyristors, GTOs, diodes and other semiconductor devices against damaging short-circuit currents while delivering exceptional current-limiting performance.
Manufactured with pure silver fuse elements embedded in solidified silica sand, the NH3UD69V450PV offers extremely low let-through energy (I²t), high interrupting capacity and silver-plated contact surfaces for dependable long-term operation. The double visual indicator simplifies maintenance and enables rapid identification of an operated fuse.
With a 450 A rated current and 690 V AC IEC / 700 V AC UL operating voltage, this NH Size 3 fuse is ideally suited for industrial drives, power converters, UPS systems, renewable energy installations and other demanding power conversion applications requiring rapid semiconductor protection.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 450 A rated current for high-power industrial equipment.
- 690 V AC IEC / 700 V AC UL voltage rating.
- Designed to protect IGBTs, thyristors, GTOs and semiconductor devices.
- Low I²t characteristics minimise equipment damage during fault conditions.
- Double visual indicator for quick fuse status identification.
Key Features
- Mersen Protistor® high-speed fuse series.
- Model: NH3UD69V450PV.
- 450 A rated current.
- 690 V AC IEC / 700 V AC UL rated voltage.
- aR operating class for semiconductor protection.
- NH Size 3 square body construction.
- Double visual indicator.
- Silver-plated plain blade contacts.
Reliable Protection for Industrial Power Electronics
The Mersen NH3UD69V450PV is engineered to interrupt fault currents rapidly before they can damage expensive semiconductor devices. Its low energy let-through characteristics help improve equipment reliability, reduce maintenance costs and minimise costly production downtime.
Designed for today's power conversion equipment, the Protistor® NH series provides dependable protection in industrial automation, renewable energy installations, motor drives and high-power electrical systems.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- Power converters and rectifiers.
- UPS systems.
- Renewable energy inverters.
- Industrial automation and semiconductor protection.
Technical Specifications
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| Fuse Indication | Dual indicator | |
|---|---|---|
| Fuse Type | PV (gPV), Semiconductor | |
| Fuse Size | NH3 | |
| Fuse Class | aR | |
| Voltage | 690 V | |
| Item number | M320585 | |
| Catalogue No | NH3UD69V450PV | |
| Description | Square Body High-Speed Fuse Protistor® NH Size 3 aR 690VAC IEC 700VAC UL 450A With Double indicator Plain Blades | |
| EAN/UPC Code | 3605340358612 | |
| Rated voltage AC UL | 700 V | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 450 A | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | NH3 | |
| Mounting | Clip | |
| Clearing I2t At Rated Voltage | 84.3 kA²s | |
| Melting I2t | 15.7 kA²s | |
| AC Max I.R./Breaking Capacity | I1: 170 kA | |
| Indication System | Yes | |
| Indication System Type | Double indicator | |
| Connection/Terminal Material | Brass | |
| Connection/Terminal Type | Plain Blades | |
| Product Width | 72 mm | |
| Product Length | 150 mm | |
| Product Height | 89 mm | |
| Sell Pack Quantity | 1 EA | |
| Sell Pack Weight | 1.05 kg | |
| Sell Pack Width | 165 mm | |
| Sell Pack Length | 185 mm | |
| Sell Pack Height | 100 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 1.05 kg | |
| Power Dissipation at Rated Current Value | 139 W | |
| HS Code | 85361090 | |
| Country of Manufacture | Tunisia |
Frequently Asked Questions
What is the Mersen NH3UD69V450PV used for?
It provides ultra-fast protection for semiconductor devices including IGBTs, thyristors, GTOs and diodes used in industrial power electronic equipment.
What is the current rating of this fuse?
The Mersen NH3UD69V450PV has a 450 A rated current.
What voltage is this fuse rated for?
The fuse is rated for 690 V AC (IEC) and 700 V AC (UL).
What does the aR operating class mean?
The aR classification identifies an ultra-fast fuse designed specifically for semiconductor short-circuit protection.
Where is this fuse commonly installed?
It is commonly installed in industrial drives, converters, UPS systems, inverter equipment and power conversion applications requiring dependable semiconductor protection.
Trusted Semiconductor Protection Worldwide
Mersen Protistor® semiconductor fuses are trusted worldwide by OEMs, panel builders and industrial engineers for delivering rapid fault interruption and dependable protection for critical power electronic equipment.
