High-speed Protistor® fuse rated 250A and 1000VAC with striker indication and DIN 80 blade terminals for semiconductor protection.
£187.60
The Mersen Z076428 (Catalogue No. DN00UC10C250L) is a Protistor® NH Size 00 high-speed semiconductor protection fuse engineered to provide ultra-fast short-circuit protection for sensitive power electronic devices. Rated at 250 A and 1000 V AC (IEC), it is specifically designed to protect IGBTs, thyristors, power diodes and other semiconductor components used in industrial power conversion equipment.
Manufactured using precision die-cut silver fuse elements embedded in solidified sand, the Z076428 delivers exceptionally low let-through energy and excellent current-limiting performance. Silver-plated contact blades and non-magnetic hardware help ensure reliable electrical performance, while the integrated striker can operate an optional field-mountable microswitch for remote indication.
With its aR ultra-fast operating characteristic, 120 kA AC breaking capacity and compact NH Size 00 design, the Mersen Z076428 is ideally suited to industrial motor drives, UPS systems, power converters, rectifiers and renewable energy installations requiring dependable semiconductor protection.
The Mersen Z076428 is engineered to interrupt fault currents within milliseconds, limiting the energy transferred to valuable semiconductor devices. Its ultra-fast operation helps reduce thermal stress, minimise equipment damage and improve overall system reliability in demanding industrial applications.
Protistor® semiconductor fuses are widely specified by OEM manufacturers and electrical engineers for protecting industrial drives, power converters, UPS systems and renewable energy installations where rapid fault clearance is essential for maintaining operational continuity.
| Item number | Z076428 |
|---|---|
| Catalogue No | DN00UC10C250L |
| Description | Square Body High-Speed Fuse Protistor® Size NH 00 aR 1000VAC IEC 250A With Striker DIN 80 Blades |
| EAN/UPC Code | 3605340017410 |
| Rated voltage AC IEC | 1000 V |
| Ampere Rating | 250 A |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | NH00 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 60000 A²s |
| Melting I2t | 8680 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 | 56.5 W |
| HS Code | 85361090 |
| Country of Manufacture | Tunisia |
It provides ultra-fast short-circuit protection for semiconductor devices including IGBTs, thyristors, diodes and rectifiers used in industrial power electronic equipment.
The Mersen Z076428 has a rated current of 250 A.
It is rated for 1000 V AC (IEC) applications.
The aR characteristic provides ultra-fast short-circuit protection for semiconductor devices and should be used alongside suitable overload protection.
Yes. The fuse incorporates an integrated striker capable of operating an optional field-mountable microswitch for remote indication.
Mersen Protistor® high-speed semiconductor fuses are trusted worldwide by OEM manufacturers, panel builders and electrical engineers to provide dependable protection for critical industrial power electronic systems.
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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...