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MERSEN FUSE 6,9 URD 2PV 0450 6,9URD2PV450
High-speed NH Size 2 aR fuse rated for 690VAC IEC and 700VAC UL at 450A with double visual indicators and plain blade terminals for semiconductor protection.
£86.47
Why Choose the Mersen NH2UD69V450PV High-Speed Semiconductor Fuse?
The Mersen NH2UD69V450PV is a Protistor® NH Size 2 high-speed semiconductor fuse designed to protect sensitive power electronic equipment against damaging short-circuit currents. Its ultra-rapid aR operating characteristic provides fast current limitation for semiconductor devices such as diodes, thyristors, rectifiers, GTOs and IGBTs.
Designed for demanding industrial power-conversion systems, the NH2UD69V450PV uses a robust ceramic square body with high-performance fuse elements and NH blade contacts. This construction helps restrict peak fault current and let-through energy, reducing thermal and mechanical stress on valuable semiconductor components.
Rated at 450 A and 690 V AC, this NH Size 2 fuse is suitable for compatible NH fuse bases and fuse switch disconnectors. Its double visual indication assists engineers in identifying an operated fuse quickly during inspection and maintenance.
Key Advantages
- Protistor® aR high-speed semiconductor protection.
- 450 A rated current for high-power equipment.
- 690 V AC rated voltage.
- Rapid current limitation helps minimise semiconductor damage.
- Robust NH Size 2 industrial construction.
- Double visual indication supports efficient maintenance.
Key Features
- Mersen Protistor® semiconductor fuse.
- Catalogue reference NH2UD69V450PV.
- NH Size 2 square-body fuse format.
- 450 A rated current.
- 690 V AC rated voltage.
- aR operating class.
- Ultra-fast current-limiting operation.
- Double visual fuse indication.
- NH blade terminal configuration.
- Designed for industrial power electronic protection.
Reliable Protection for High-Power Electronics
Power semiconductor devices can sustain permanent damage within milliseconds when exposed to excessive fault energy. The Mersen NH2UD69V450PV is engineered to interrupt serious short-circuit currents rapidly, helping reduce the peak current and thermal energy transferred to connected electronic components.
Because the fuse has an aR utilisation category, it is primarily intended for semiconductor short-circuit protection. Suitable overload protection may also be required, depending on the circuit design, operating conditions and recommendations of the equipment manufacturer.
Typical Applications
- Variable frequency drives and high-power motor drives.
- Industrial inverters.
- Power converters and rectifier systems.
- Uninterruptible power supply systems.
- Battery chargers and industrial power supplies.
- Renewable energy conversion equipment.
- Industrial automation and control panels.
- High-power semiconductor protection circuits.
Technical Specifications
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| Fuse Indication | Dual indicator | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Size | NH2 | |
| Fuse Class | aR | |
| Voltage | 690 V | |
| Item number | D320485 | |
| Catalogue No | NH2UD69V450PV | |
| Description | Square Body High-Speed Fuse Protistor® NH Size 2 aR 690VAC IEC 700VAC UL 450A With Double indicator Plain Blades | |
| EAN/UPC Code | 8430399015828 | |
| 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 | NH2 | |
| Mounting | Clip | |
| Clearing I2t At Rated Voltage | 113 kA²s | |
| Melting I2t | 21 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 | 52 mm | |
| Product Length | 150 mm | |
| Product Height | 74 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 1.86 kg | |
| Sell Pack Width | 155 mm | |
| Sell Pack Length | 162 mm | |
| Sell Pack Height | 80 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.62 kg | |
| Power Dissipation at Rated Current Value | 139 W | |
| HS Code | 85361090 | |
| Country of Manufacture | Tunisia |
Frequently Asked Questions
What is the Mersen NH2UD69V450PV used for?
It is a high-speed aR fuse designed to protect semiconductor devices and industrial power electronic equipment against damaging short-circuit currents.
What is the current rating of the NH2UD69V450PV?
The fuse has a rated current of 450 A.
What voltage is the NH2UD69V450PV rated for?
The fuse has a rated voltage of 690 V AC.
What does the aR operating class mean?
The aR classification identifies an ultra-rapid fuse intended primarily for short-circuit protection of semiconductor devices. Separate overload protection may be required.
Where is the NH2UD69V450PV commonly installed?
It is commonly used in high-power drives, converters, inverters, UPS equipment, industrial power supplies and other systems containing sensitive power semiconductors.
Trusted by Industrial Engineers Worldwide
Mersen Protistor® semiconductor fuses are widely specified by OEMs, panel builders and maintenance engineers for dependable protection of critical industrial power electronic equipment.
