High-speed 10x38mm cylindrical fuse engineered for optimal semiconductor protection with aR-class performance up to 500VAC and integrated striker for remote indication.
£29.12
The Mersen S076928 is a high-performance Protistor® high-speed cylindrical semiconductor fuse designed to protect sensitive power electronic devices against short circuits and fault currents. As part of the Protistor® 10 × 38 mm aR series, it delivers extremely fast fault interruption for semiconductors used in industrial automation, motor drives and power conversion equipment.
Specifically engineered for semiconductor protection, the S076928 provides exceptional current limiting performance and a high breaking capacity, helping minimise damage to expensive components such as IGBTs, SCRs, diodes and rectifiers. Its integrated striker indicator also provides clear visual indication following fuse operation, simplifying maintenance and fault diagnosis.
With a 4 A current rating, 500 V AC rating and 10 × 38 mm cylindrical format, the Mersen S076928 is ideal for industrial power electronics, variable speed drives, UPS systems and semiconductor protection applications.
Semiconductor fuses are specifically engineered to protect power electronic components from destructive short circuits by interrupting fault currents before damage can occur. Their extremely fast operating characteristics help maximise equipment reliability while reducing costly downtime.
The Mersen Protistor® range is trusted worldwide by machine builders, panel manufacturers and industrial engineers for protecting inverters, motor drives, UPS systems and other semiconductor-based equipment requiring rapid fault clearance.
| Item number | S076928 |
|---|---|
| Catalogue No | A050URD4T13I |
| Description | High-Speed Cylindrical Fuse Protistor® Size 10x38 aR 500VAC IEC 4A With Striker |
| EAN/UPC Code | 3605340020595 |
| Rated voltage AC IEC | 500 V |
| Ampere Rating | 4 A |
| RoHS Compliant | Yes |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 10x38 |
| Mounting | Clip |
| Clearing I2t At Rated Voltage | 16 A²s |
| Melting I2t | 5.3 A²s |
| AC Max I.R./Breaking Capacity | I1: 50 kA |
| Design Details | URD |
| Indication System | Yes |
| Indication System Type | Striker |
| Connection/Terminal Material | Silver-Plated Copper |
| Connection/Terminal Type | Ferrule |
| Product Diameter | 10.3 mm |
| Product Length | 39.2 mm |
| Sell Pack Quantity | 10 EA |
| Sell Pack Weight | 0.092 kg |
| Sell Pack Width | 54 mm |
| Sell Pack Length | 80 mm |
| Sell Pack Height | 12 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.0092 kg |
| Power Dissipation at Rated Current Value | 1.8 W |
| HS Code | 85361010 |
The S076928 is a high-speed semiconductor fuse designed to protect power electronic devices such as IGBTs, SCRs and rectifiers against short circuits.
The fuse has a 4 A rated current.
The Mersen S076928 is rated for 500 V AC operation.
Yes. It incorporates an integrated striker indicator that provides clear indication after the fuse has operated.
It is commonly used to protect semiconductor devices in variable speed drives, inverters, UPS systems and industrial power electronics.
Mersen Protistor® semiconductor fuses are trusted by electrical engineers and OEM manufacturers for delivering exceptionally fast fault protection, high reliability and dependable performance in demanding industrial power electronic applications.
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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...