High-performance Protistor® fuse with rapid aR characteristic, 280A rating, 1000VAC IEC compliance, built-in striker, and DIN 80 blade terminals for demanding industrial applications.
£195.82
The Mersen A076429, catalogue number DN00UC10C280L, is a Protistor® square body high-speed semiconductor fuse designed to provide rapid short-circuit protection for sensitive power semiconductor devices in demanding industrial power electronic systems. Classified as an aR semiconductor fuse, it is manufactured in accordance with IEC 60269-4 and is specifically engineered to protect IGBTs, thyristors, diodes and rectifiers from damaging fault currents.
Manufactured by Mersen, the A076429 features an NH00 square body with DIN 80 silver-plated blade terminals and an integrated striker indicator. The striker provides positive mechanical indication after fuse operation and can actuate an optional microswitch for remote signalling, reducing maintenance time and improving system availability.
With a 280 A current rating, 1000 V AC IEC voltage rating and a high 120 kA breaking capacity, the DN00UC10C280L offers dependable protection for high-power converters, drives and industrial power electronics where maximum semiconductor protection is essential.
The Mersen A076429 is engineered to interrupt high fault currents before they can damage expensive semiconductor devices. Its low let-through energy and ultra-fast operating characteristics minimise thermal and electrical stress, helping maximise equipment reliability and extend the service life of power electronic systems.
The integrated striker provides immediate visual and mechanical indication following fuse operation and can actuate a compatible microswitch for remote monitoring, simplifying maintenance and reducing system downtime in critical industrial installations.
| Item number | A076429 |
|---|---|
| Catalogue No | DN00UC10C280L |
| Description | Square Body High-Speed Fuse Protistor® Size NH 00 aR 1000VAC IEC 280A With Striker DIN 80 Blades |
| EAN/UPC Code | 3605340017427 |
| Rated voltage AC IEC | 1000 V |
| Ampere Rating | 280 A |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | NH00 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 81400 A²s |
| Melting I2t | 11810 A²s |
| AC Max I.R./Breaking Capacity | I1: 120 kA |
| Indication System | Yes |
| Indication System Type | Striker |
| Connection/Terminal Material | Silver-Plated Copper |
| Connection/Terminal Type | DIN 80 Blades |
| Product Width | 30 mm |
| Product Length | 100 mm |
| Product Height | 38.5 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 0.75 kg |
| Sell Pack Width | 95 mm |
| Sell Pack Length | 105 mm |
| Sell Pack Height | 72 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.25 kg |
| Power Dissipation at Rated Current Value | 62 W |
| HS Code | 85361090 |
| Country of Manufacture | Tunisia |
It provides ultra-fast short-circuit protection for semiconductor devices used in industrial drives, converters, UPS systems and other power electronic equipment.
The Mersen A076429 has a rated current of 280 A.
The fuse is rated for 1000 V AC (IEC).
The integrated striker provides mechanical indication after fuse operation and can operate a compatible microswitch for remote signalling.
The aR utilisation category identifies a high-speed semiconductor fuse intended primarily for short-circuit protection of power semiconductor devices.
Mersen Protistor® semiconductor fuses are trusted worldwide by OEMs, panel builders and industrial engineers for dependable protection of critical power electronic equipment.
● Service Agreements
Credit Accounts
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
● frequently asked questions
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
● latest blog
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...