High-speed fuse rated at 690VAC and 125A with striker for semiconductor protection. Compatible with DIN 80 blades and meets IEC standards.
£67.45
The Mersen W330184 (Catalogue No. DN000UB69V125L) is a Protistor® high speed square body semiconductor fuse designed to provide ultra-fast protection for sensitive power electronic devices. Engineered specifically for safeguarding IGBTs, thyristors, diodes and rectifier assemblies, it delivers exceptional current limitation and low energy let-through to help prevent costly semiconductor damage.
Manufactured in the compact NH Size 000 format with DIN 80 blade terminals, the W330184 incorporates a striker (trip indicator) for operation with compatible microswitch accessories. Silver-plated contacts, pure silver fuse elements and solidified silica sand construction ensure dependable performance in demanding industrial environments.
With a 125 A current rating, 690 V AC IEC / UL rating, 500 V DC UL rating and an aR operating characteristic, the W330184 is ideally suited to variable frequency drives, UPS systems, industrial inverters, power converters and other semiconductor-based equipment requiring reliable short-circuit protection.
The Mersen W330184 has been developed to protect expensive power semiconductors against destructive short-circuit currents. Its low I²t characteristics minimise thermal and mechanical stress, helping to maximise equipment reliability while reducing maintenance costs and downtime.
Its aR operating characteristic provides partial-range protection specifically for semiconductor devices and should be used alongside suitable overload protection where required by the equipment design.
| Item number | W330184 |
|---|---|
| Catalogue No | DN000UB69V125L |
| Description | Square Body High-Speed Fuse Protistor® Size NH 000 aR 690VAC IEC 125A With Striker DIN 80 Blades |
| EAN/UPC Code | 3605340363104 |
| Rated voltage AC UL | 690 V |
| Rated voltage DC UL | 500 V |
| Rated voltage AC IEC | 690 V |
| Ampere Rating | 125 A |
| RoHS Compliant | Yes |
| AC or DC | AC/DC |
| Speed/Characteristic | aR |
| Fuse Size | NH000 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 8900 A²s |
| Melting I2t | 1310 A²s |
| AC Max I.R./Breaking Capacity | I1: 200 kA |
| Indication System | Yes |
| Indication System Type | Striker |
| Connection/Terminal Material | Silver-Plated Copper |
| Connection/Terminal Type | DIN 80 Blades |
| Product Width | 20 mm |
| Product Length | 100 mm |
| Product Height | 55.5 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 0.3849 kg |
| Sell Pack Width | 110 mm |
| Sell Pack Length | 130 mm |
| Sell Pack Height | 80 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.1283 kg |
| Power Dissipation at Rated Current Value | 26 W |
| HS Code | 85361090 |
| Country of Manufacture | Tunisia |
The W330184 provides ultra-fast short-circuit protection for semiconductor devices including IGBTs, thyristors, diodes and rectifier assemblies.
The fuse has a rated current of 125 A.
It is rated at 690 V AC (IEC/UL) and 500 V DC (UL).
The integrated striker can operate a compatible microswitch or signalling device, providing remote indication when the fuse has operated.
The aR operating class provides partial-range protection for semiconductor devices against short-circuit faults and is intended to be used alongside suitable overload protection.
Mersen Protistor® semiconductor fuses are trusted worldwide by OEMs, panel builders and industrial engineers for protecting valuable power electronic equipment in demanding industrial applications.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...