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 0450 L322585
NH Size 3 Protistor® fuse providing high-speed fault clearing up to 690VAC (IEC) and 700VAC (UL) at 450A with double visual indicators and robust ceramic square body construction.
£97.82
Why Choose the Mersen NH3GS69V450PV Protistor® High-Speed Fuse?
The Mersen NH3GS69V450PV (Item Number L322585) is a premium Protistor® NH Size 3 gS high-speed semiconductor fuse designed to provide full-range protection for today's advanced power electronic equipment. Rated at 450 A with voltage ratings of 690 V AC (IEC) and 700 V AC (UL), it protects semiconductor devices and associated circuits against both overloads and short-circuit faults.
Manufactured to DIN NH standards, the NH3GS69V450PV incorporates precision die-cut pure silver fuse elements embedded in solidified silica sand to achieve exceptional current limitation, low let-through energy and a high breaking capacity. Silver-plated contacts and non-magnetic hardware ensure reliable long-term performance in demanding industrial applications.
The fuse features a double visual indicator for rapid status identification and integrates seamlessly into NH modular fuse holders and switch disconnectors. It is ideally suited to industrial drives, UPS systems, renewable energy installations, rectifiers and power conversion equipment where reliable semiconductor protection is critical.
Key Advantages
- Full-range gS semiconductor protection.
- 450 A rated current for high-power industrial applications.
- 690 V AC IEC / 700 V AC UL voltage rating.
- Protects both semiconductor devices and associated wiring.
- Very low I²t reduces stress on sensitive electronic components.
- Double indicator enables rapid maintenance and fault identification.
Key Features
- Mersen Protistor® NH3GS69V450PV.
- Item number L322585.
- NH Size 3 square-body fuse.
- 450 A nominal current rating.
- 690 V AC IEC / 700 V AC UL.
- gS utilisation category.
- Double visual indicator.
- Silver-plated blade contacts.
- Pure silver fuse elements.
- Solidified silica sand filling.
- Non-magnetic construction.
Designed for Complete Semiconductor Protection
Protistor® gS semiconductor fuses provide full-range protection by clearing both overload and short-circuit faults. Their fast operating characteristics significantly reduce thermal and mechanical stress on power semiconductor devices, helping maximise equipment reliability while reducing maintenance costs and downtime.
The NH3GS69V450PV is fully compatible with NH modular fuse holders and fuse switch disconnectors manufactured to DIN standards. Its double visual indicator enables quick identification of operated fuse links, simplifying maintenance in demanding industrial installations.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial power converters.
- Renewable energy inverter systems.
- UPS systems.
- Motor drives and servo systems.
- Industrial rectifiers.
- Protection of IGBTs, thyristors, GTOs and diode modules.
- Heavy-duty power conversion 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 | L322585 | |
| Catalogue No | NH3GS69V450PV | |
| Description | Square Body High-Speed Fuse Protistor® NH Size 3 gS 690VAC IEC 700VAC UL 450A With Double indicator | |
| EAN/UPC Code | 3605340360400 | |
| Rated voltage AC UL | 700 V | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 450 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | gS | |
| Fuse Size | NH3 | |
| Mounting | Clip | |
| Clearing I2t At Rated Voltage | 293 kA²s | |
| Melting I2t | 58.675 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 | 50 W | |
| HS Code | 85361090 | |
| Country of Manufacture | Tunisia |
Frequently Asked Questions
What is the Mersen NH3GS69V450PV used for?
The NH3GS69V450PV protects power semiconductor devices and associated equipment against overloads and short-circuit faults in industrial power electronic systems.
What does the gS utilisation category mean?
The gS classification provides full-range protection, safeguarding both semiconductor devices and associated conductors against overload and fault currents.
What is the current rating?
The fuse has a nominal current rating of 450 A.
What voltage is this fuse rated for?
The NH3GS69V450PV is rated at 690 V AC (IEC) and 700 V AC (UL).
Which semiconductor devices can it protect?
It is designed to protect IGBTs, thyristors, GTOs, diodes and other sensitive semiconductor devices used in industrial power conversion equipment.
Trusted Semiconductor Protection Worldwide
Mersen Protistor® NH semiconductor fuses are trusted by OEMs, panel builders and industrial maintenance engineers worldwide for dependable protection of high-performance power electronic systems.
