High-speed Protistor® fuse with integrated visual indicator, rated 315A at 690VAC, featuring NH 000 square body and DIN 80 copper blades for semiconductor protection.
£67.85
The Mersen C330029, also identified by the manufacturer reference DN000UB69V315V, is a compact Protistor® high-speed semiconductor fuse designed to protect sensitive power electronic components against damaging short-circuit currents. Its ultra-rapid aR operating characteristic helps limit peak fault current and reduce the thermal energy transferred to semiconductor devices.
Engineered for demanding industrial power-conversion equipment, the C330029 is suitable for protecting diodes, thyristors, rectifiers, inverters and other compatible semiconductor assemblies. Its square-body DIN 80 vertical mounting format provides a secure, space-efficient solution for control panels, variable-speed drives, converters and industrial power supplies.
With a rated current of 315 A and a rated voltage of 690 V AC, the Mersen C330029 provides dependable current-limiting protection for high-power industrial systems. Its NH Size 000 construction is intended for installation in compatible DIN 80 fuse bases and should be selected according to the electrical and mechanical requirements of the equipment.
Power semiconductor devices can suffer permanent damage within milliseconds when exposed to excessive fault current. The Mersen C330029 is designed to interrupt serious short circuits rapidly, reducing the peak current and let-through energy reaching connected electronic components.
Correct fuse selection should consider the system voltage, continuous operating current, prospective short-circuit current, semiconductor withstand values and installation conditions. Because the C330029 has an aR operating characteristic, additional overload protection may be required depending on the application and equipment design.
| Item number | C330029 |
|---|---|
| Catalogue No | DN000UB69V315V |
| Description | Square Body High-Speed Fuse Protistor® Size NH 000 aR 690VAC IEC 315A Visual Indicator DIN 80 Blades |
| EAN/UPC Code | 3605340360899 |
| Rated voltage AC UL | 690 V |
| Rated voltage DC UL | 320 V |
| Rated voltage AC IEC | 690 V |
| Ampere Rating | 315 A |
| RoHS Compliant | Yes |
| AC or DC | AC/DC |
| Speed/Characteristic | aR |
| Fuse Size | NH000 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 82000 A²s |
| Melting I2t | 15420 A²s |
| AC Max I.R./Breaking Capacity | I1: 200 kA |
| Indication System | Yes |
| Indication System Type | Visual Indicator |
| Connection/Terminal Material | Silver-Plated Copper |
| Connection/Terminal Type | DIN 80 Blades |
| Product Width | 20 mm |
| Product Length | 100 mm |
| Product Height | 38.5 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 0.3759 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 | 0.1253 kg |
| Power Dissipation at Rated Current Value | 58 W |
| HS Code | 85361090 |
| Country of Manufacture | Tunisia |
The C330029 is a high-speed aR fuse designed to protect compatible semiconductor devices and industrial power electronic equipment against damaging short-circuit currents.
The Mersen C330029 has a rated current of 315 A.
The fuse is rated for operation at up to 690 V AC in compatible electrical systems.
The C330029 uses an NH Size 000 square-body DIN 80 vertical mounting format and should be installed in a compatible fuse base.
An aR fuse is primarily designed for short-circuit protection of semiconductor devices. Separate overload protection may be required depending on the circuit and equipment manufacturer’s recommendations.
Mersen Protistor® high-speed fuses are widely used by OEMs, panel builders and maintenance engineers to provide dependable protection for critical semiconductor devices in demanding industrial power electronic systems.
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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...