High-speed Protistor® fuse offering reliable protection for power semiconductor applications at 500VAC and 400A rating with L bracket terminals.
£58.38
The Mersen G330194 is a premium high-speed semiconductor fuse engineered to provide rapid protection for sensitive power electronic equipment. Part of the trusted Mersen Protistor® series, this square body fuse is specifically designed to safeguard semiconductors including IGBTs, thyristors, diodes and rectifiers from damaging short-circuit currents.
Featuring an ultra-fast aR operating characteristic, the G330194 delivers exceptional current limitation and high breaking capacity, helping to minimise damage to expensive electronic components while reducing equipment downtime. Its robust construction incorporates silver-plated contacts and solidified sand technology for excellent arc control and long-term reliability.
With a 400 A current rating and 500 V AC IEC rated voltage, the Mersen G330194 is ideally suited for protecting industrial power converters, variable frequency drives, UPS systems, inverters and other demanding power electronic applications.
High-speed semiconductor fuses are specifically designed to protect sensitive power electronic devices that require significantly faster fault interruption than conventional industrial fuses. By rapidly limiting fault current, they help reduce thermal stress and extend the service life of critical electronic equipment.
The Mersen G330194 is designed for modern industrial automation and power conversion systems where dependable semiconductor protection is essential. It is commonly specified for inverters, motor drives, UPS equipment and similar installations operating at up to 500 V AC.
| Item number | G330194 |
|---|---|
| Catalogue No | BS000UB50V400 |
| Description | Square Body High-Speed Fuse Protistor® Size NH 000 aR 500VAC IEC 400A L Brackets |
| EAN/UPC Code | 3605340363265 |
| Rated voltage AC UL | 500 V |
| Rated voltage DC UL | 320 V |
| Rated voltage AC IEC | 500 V |
| Ampere Rating | 400 A |
| RoHS Compliant | Yes |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | NH000 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 160000 A²s |
| Melting I2t | 33180 A²s |
| AC Max I.R./Breaking Capacity | I1: 120 kA |
| Connection/Terminal Material | Tin-Plated Copper |
| Connection/Terminal Type | L Brackets |
| Product Width | 36 mm |
| Product Length | 94 mm |
| Product Height | 22.5 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 0.423 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 | 0.141 kg |
| Power Dissipation at Rated Current Value | 66 W |
| HS Code | 85361090 |
| Country of Manufacture | Tunisia |
The Mersen G330194 is a high-speed semiconductor fuse designed to protect sensitive power electronic equipment such as inverters, motor drives and rectifiers from damaging fault currents.
The fuse has a 400 A current rating.
The G330194 is rated for 500 V AC under IEC standards, with a 320 V DC UL rating.
It is designed to protect IGBTs, thyristors, diodes, rectifiers and other sensitive semiconductor devices used in industrial power electronics.
The Mersen G330194 features an L bracket mounting configuration within an NH Size 000 square body design.
Mersen Protistor® high-speed semiconductor fuses are trusted by machine builders, panel manufacturers and automation engineers worldwide to provide reliable protection for critical power electronic equipment.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...