Mersen V078908 MI6SA40V0.63 medium time-lag 6.3 x 32 mm miniature fuse rated at 0.63 A and 400 V AC for protecting sensitive electronic components and control apparatus.
£5.93
The Mersen V078908, catalogue number MI6SA40V0.63, is a compact medium time-lag semiconductor miniature fuse designed to provide dependable overcurrent protection for sensitive electronic components and industrial control equipment. Its SA operating characteristic allows brief current surges to pass while disconnecting the circuit when a sustained overload or short circuit occurs.
With a rated current of 0.63 A and a rated voltage of 400 V AC, the V078908 is suitable for low-current electronic circuits, control apparatus, power conversion equipment and industrial automation systems. Its standard 6.3 x 32 mm cartridge format enables straightforward installation in compatible fuse clips and holders.
The fuse combines a compact design with a very high breaking capacity, helping it safely interrupt significant prospective fault currents. Manufactured by Mersen using high-quality materials, it delivers consistent protection while tolerating the temporary inrush currents commonly encountered during equipment start-up.
Medium time-lag fuses are designed to tolerate brief increases in current that occur when power supplies, transformers and other electrical equipment are energised. This helps prevent unnecessary fuse operation during normal start-up conditions while maintaining reliable protection against sustained overcurrents.
The Mersen V078908 combines an SA time-current characteristic with a very high breaking capacity. This makes it suitable for electronic and industrial control circuits requiring dependable protection without nuisance operation during temporary current surges.
| Current | 63 A |
|---|---|
| Voltage | 400 V |
| Manufacturer | Mersen |
| Series | Semiconductor Miniature Fuses Size 6 x 32 SA 400 V |
| Item number | V078908 |
| Catalogue number | MI6SA40V0.63 |
| Product type | Medium time-lag miniature fuse |
| Rated current | 0.63 A |
| Rated voltage | 400 V AC |
| Current type | AC |
| Operating characteristic | Medium time-lag SA |
| Fuse size | 6.3 x 32 mm |
| Mounting type | Clip mounting |
| Breaking capacity | Very high |
| Primary application | Semiconductor and control apparatus protection |
| EAN / UPC | 3605340032710 |
| Compliance documentation | CE, RoHS, REACH and UKCA |
The Mersen V078908 provides overcurrent and short-circuit protection for sensitive electronic components, semiconductor devices and industrial control apparatus.
The Mersen V078908 has a rated current of 0.63 A.
This miniature fuse has a rated voltage of 400 V AC.
The SA characteristic provides medium time-lag operation, allowing the fuse to tolerate brief start-up and inrush currents while responding to sustained overloads and short circuits.
The fuse has a standard 6.3 x 32 mm cartridge format and is designed for installation in compatible fuse clips or fuse holders.
Mersen miniature fuses are used by electronic equipment manufacturers, panel builders and industrial engineers to protect sensitive control equipment while supporting dependable operation in demanding electrical applications.
● 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...