Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
MERSEN FUSE 6,9 GS 3 PV 0400 NH3GS69V400PV
High-speed Protistor® fuse offering reliable circuit protection at up to 690VAC (IEC) and 700VAC (UL), 400A rating, with double indicator for clear status identification.
£97.82
Why Choose the Mersen NH3GS69V400PV Protistor® High-Speed Fuse?
The Mersen NH3GS69V400PV, item number J322583, is a Protistor® NH size 3 high-speed semiconductor fuse designed to provide full-range protection for power semiconductor equipment. Featuring a gS operating characteristic, this fuse offers both overload and short-circuit protection for sensitive devices including IGBTs, thyristors, diodes and GTOs used in modern power conversion systems.
Rated at 400 A with a voltage rating of 690 V AC (IEC) and 700 V AC (UL), the NH3GS69V400PV provides exceptional current-limiting performance, helping minimise thermal stress and damage during fault conditions. Pure silver fuse elements embedded in solidified silica sand, combined with silver-plated contacts, ensure high interrupting capacity and reliable long-term operation.
Designed for installation in standard NH fuse systems conforming to DIN 43620, the fuse includes a double visual indicator and supports optional microswitch accessories for remote indication. It is ideally suited to industrial drives, UPS systems, renewable energy installations, rectifiers, inverters and heavy-duty power converters.
Key Advantages
- Genuine Mersen Protistor® semiconductor protection fuse.
- 400 A current rating.
- 690 V AC IEC / 700 V AC UL rated voltage.
- gS full-range protection against overloads and short circuits.
- Double visual indicator with optional remote signalling.
- Low I²t characteristics help maximise semiconductor protection.
Key Features
- Manufacturer: Mersen
- Item number: J322583
- Catalogue reference: NH3GS69V400PV
- Series: Protistor®
- NH size 3 square body fuse.
- gS operating class.
- Double visual indicator.
- Silver-plated blade contacts.
Engineered for Full-Range Semiconductor Protection
The Protistor® gS range has been developed to provide complete protection of semiconductor equipment by interrupting both overload and short-circuit faults before damaging thermal energy reaches sensitive components. This helps maximise equipment uptime while extending the service life of valuable power electronic assemblies.
The NH3GS69V400PV is suitable for high-power converters, motor drives, UPS systems, renewable energy installations and industrial automation equipment requiring dependable semiconductor protection.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial power converters.
- Rectifiers and inverters.
- UPS systems.
- Renewable energy and photovoltaic installations.
- Motor control centres.
- Industrial automation equipment.
Technical Specifications
Tick the specs you need, then view products that match.
| Fuse Indication | Dual indicator | |
|---|---|---|
| Fuse Type | PV (gPV), Semiconductor | |
| Fuse Size | NH3 | |
| Fuse Class | gS | |
| Voltage | 690 V | |
| Item number | J322583 | |
| Catalogue No | NH3GS69V400PV | |
| Description | Square Body High-Speed Fuse Protistor® NH Size 3 gS 690VAC IEC 700VAC UL 400A With Double indicator | |
| EAN/UPC Code | 3605340360394 | |
| Rated voltage AC UL | 700 V | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 400 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | gS | |
| Fuse Size | NH3 | |
| Mounting | Clip | |
| Clearing I2t At Rated Voltage | 210 kA²s | |
| Melting I2t | 42.05 kA²s | |
| AC Max I.R./Breaking Capacity | I1: 160 kA | |
| Indication System | Yes | |
| Indication System Type | Double indicator | |
| Connection/Terminal Material | Copper | |
| 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 | 80 mm | |
| Sell Pack Length | 155 mm | |
| Sell Pack Height | 75 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 1.05 kg | |
| Power Dissipation at Rated Current Value | 47 W | |
| HS Code | 85361090 | |
| Country of Manufacture | Tunisia |
Frequently Asked Questions
What is the Mersen NH3GS69V400PV used for?
The NH3GS69V400PV protects power semiconductor devices including IGBTs, thyristors, diodes and GTOs used in industrial power conversion equipment.
What is the current rating of the NH3GS69V400PV?
The fuse has a rated current of 400 A.
What voltage is the NH3GS69V400PV rated for?
The fuse is rated at 690 V AC (IEC) and 700 V AC (UL).
What does the gS operating class mean?
The gS operating class provides full-range protection against both overloads and short circuits for semiconductor equipment.
Does the NH3GS69V400PV include a status indicator?
Yes. It features a double visual indicator and supports optional microswitch accessories for remote signalling.
Trusted Protistor® Semiconductor Protection
Mersen Protistor® semiconductor fuses are trusted worldwide by OEMs, panel builders and industrial engineers for protecting high-value power electronic systems operating in demanding industrial environments.
