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MERSEN FUSE 6,9 URD 2PV 0350 6,9URD2PV350
High-speed NH Size 2 Protistor® fuse with double indicator and plain blades, rated 350A for AC applications up to 690VAC IEC and 700VAC UL standards. Ceramic body with brass terminals for semiconductor protection.
£80.02
Why Choose the Mersen NH2UD69V350PV Protistor® High-Speed Fuse?
The Mersen NH2UD69V350PV is a high-performance NH Size 2 high-speed semiconductor protection fuse engineered for rapid short-circuit protection of sensitive power electronic components. Part of the established Mersen Protistor® NH aR range, it is designed to protect IGBTs, thyristors, GTOs, power diodes and rectifier assemblies used in demanding industrial electrical systems.
The NH2UD69V350PV combines an ultra-fast aR operating characteristic with low let-through energy, helping minimise thermal and electrical stress during fault conditions. Its robust ceramic body, precision fuse elements and silver-plated NH blade contacts support dependable performance in industrial drives, power converters and automation equipment.
With a rated current of 350 A and a rated voltage of 690 V AC IEC / 700 V AC UL, this fuse is suitable for high-power variable frequency drives, UPS systems, rectifiers, inverters and industrial power conversion equipment. Its double visual indicator allows maintenance personnel to identify fuse operation quickly.
Key Advantages
- High-speed aR semiconductor protection fuse.
- 350 A rated current for demanding power electronic applications.
- 690 V AC IEC / 700 V AC UL voltage rating.
- Protects IGBTs, thyristors, GTOs, power diodes and rectifiers.
- Low let-through energy helps reduce semiconductor damage.
- Double visual indicator simplifies inspection and maintenance.
Key Features
- Mersen Protistor® NH aR series.
- NH Size 2 square-body fuse.
- 350 A rated current.
- 690 V AC IEC / 700 V AC UL rated voltage.
- aR ultra-fast operating characteristic.
- High AC breaking capacity for dependable fault interruption.
- Double visual fuse-operation indicator.
- Plain silver-plated NH blade terminals.
Reliable Protection for Industrial Power Electronics
Power semiconductor devices can be permanently damaged by excessive current within milliseconds. The Mersen NH2UD69V350PV is engineered to interrupt short-circuit currents rapidly, limiting the energy transferred to protected components and reducing the risk of extensive secondary damage.
The fuse’s aR characteristic is specifically intended for semiconductor short-circuit protection. Appropriate overload protection should also be incorporated into the electrical system, and replacement selection should always account for the voltage, current, breaking capacity, time-current performance and physical format required by the equipment manufacturer.
Typical Applications
- High-power variable frequency drives.
- Industrial motor control systems.
- Power converters and rectifier assemblies.
- Uninterruptible power supply systems.
- Industrial inverters and power supplies.
- Renewable energy power conversion equipment.
Technical Specifications
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| Fuse Indication | Dual indicator | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Size | NH2 | |
| Fuse Class | aR | |
| Voltage | 690 V | |
| Item number | Y320480 | |
| Catalogue No | NH2UD69V350PV | |
| Description | Square Body High-Speed Fuse Protistor® NH Size 2 aR 690VAC IEC 700VAC UL 350A With Double indicator Plain Blades | |
| EAN/UPC Code | 3605340358520 | |
| Rated voltage AC UL | 700 V | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 350 A | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | NH2 | |
| Mounting | Clip | |
| Clearing I2t At Rated Voltage | 51.4 kA²s | |
| Melting I2t | 9.58 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 | 116 W | |
| HS Code | 85361090 | |
| Country of Manufacture | Tunisia |
Frequently Asked Questions
What is the Mersen NH2UD69V350PV used for?
It provides high-speed short-circuit protection for semiconductor devices such as IGBTs, thyristors, GTOs, power diodes and rectifiers used in industrial power electronic equipment.
What is the current rating of this fuse?
The Mersen NH2UD69V350PV has a rated current of 350 A.
What voltage is the NH2UD69V350PV designed for?
It is rated for 690 V AC under IEC standards and 700 V AC under UL requirements.
What does the aR fuse characteristic mean?
The aR characteristic indicates an ultra-fast, partial-range fuse intended primarily for semiconductor short-circuit protection. Separate overload protection may be required.
What fuse size is the NH2UD69V350PV?
The fuse uses the industrial NH Size 2 format and should be installed in a compatible NH2 fuse holder or switch-fuse assembly.
Trusted for Critical Semiconductor Protection
Mersen Protistor® high-speed fuses are widely specified by electrical engineers, panel builders and equipment manufacturers to protect critical semiconductor components in industrial power conversion and automation systems.
