Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
MERSEN FUSE 500V FA 0,063 A 6.32 MI6FA50V0,063
Mersen A078890 MI6FA very fast-acting miniature fuse rated at 0.063 A and 500 V AC in a compact 6.3 x 32 mm cylindrical format.
£5.60
Why Choose the Mersen A078890 Miniature Fuse?
The Mersen A078890, manufacturer designation MI6FA50V0.063, is a compact very fast-acting miniature fuse designed to protect sensitive electrical and electronic equipment against damaging overcurrent and short-circuit conditions. Its rapid operating characteristic helps limit the energy passed into vulnerable components when a fault occurs.
Part of Mersen’s MI6FA range of high-rupturing-capacity miniature fuses, the A078890 combines a standard 6.3 × 32 mm cylindrical format with a rated voltage of 500 V AC. This compact construction makes it suitable for installation in compatible fuse holders used within control equipment, instrumentation and electronic assemblies.
With a low nominal current rating of 0.063 A, equivalent to 63 mA, the Mersen A078890 is intended for circuits requiring highly sensitive protection. Its very fast-acting FA characteristic makes it particularly useful where fault current must be interrupted quickly to protect delicate components and low-current control circuits.
Key Advantages
- Very fast-acting FA fuse characteristic for rapid fault interruption.
- Low 0.063 A nominal current rating for sensitive circuits.
- 500 V AC voltage rating for industrial and electronic applications.
- Standard 6.3 × 32 mm cylindrical format.
- High-rupturing-capacity construction for dependable circuit protection.
- Compact design suitable for compatible miniature fuse holders.
Key Features
- Mersen MI6FA miniature fuse series.
- 63 mA rated current.
- 500 V AC rated voltage.
- Very fast-acting operating characteristic.
- Compact cylindrical fuse-link construction.
- Standard 6.3 × 32 mm dimensions.
- UL recognised miniature fuse range.
- Suitable for sensitive electronic and control circuits.
Rapid Protection for Sensitive Electrical Circuits
Very fast-acting fuses are designed to interrupt excessive current with minimal delay. This rapid response helps reduce thermal and electrical stress on sensitive circuit components that may be damaged before a standard or time-delay fuse operates.
The Mersen A078890 is particularly suited to low-current equipment requiring a precisely rated protective device. Its standard cylindrical dimensions allow straightforward replacement in a correctly rated 6.3 × 32 mm fuse holder, while its 500 V AC rating supports a broad range of control and electronic applications.
Typical Applications
- Electronic control circuits.
- Industrial instrumentation and monitoring equipment.
- Power supply input and output protection.
- Laboratory and test equipment.
- Measurement and sensing devices.
- Automation and process control systems.
Technical Specifications
Tick the specs you need, then view products that match.
| Voltage | 500 V | |
|---|---|---|
| Device Type | Fuse link | |
| Fuse Type | Cylindrical, Miniature | |
| Fuse Size | 6.3x32 mm | |
| Fuse Class | Fast acting | |
| Manufacturer | Mersen | |
| Reference | A078890 | |
| Manufacturer designation | MI6FA50V0.063 | |
| Product type | Miniature cylindrical fuse-link | |
| Fuse series | MI6FA | |
| Rated current | 0.063 A / 63 mA | |
| Rated voltage | 500 V AC | |
| Operating characteristic | Very fast-acting | |
| Characteristic code | FA | |
| Fuse size | 6.3 × 32 mm | |
| Construction | High-rupturing-capacity miniature fuse | |
| Maximum product weight | Approx. 2.5 g | |
| UL recognition file | E76491 | |
| Compliance | RoHS and REACH compliant |
Frequently Asked Questions
What is the Mersen A078890 used for?
The Mersen A078890 is used to provide very fast overcurrent and short-circuit protection for sensitive low-current electrical and electronic circuits.
What is the current rating of the A078890 fuse?
The fuse has a nominal current rating of 0.063 A, which is equivalent to 63 mA.
What voltage is the Mersen A078890 rated for?
The A078890 has a rated voltage of 500 V AC.
What size is the A078890 fuse?
The fuse has a standard cylindrical size of 6.3 × 32 mm and must be installed in a compatible fuse holder.
Is the Mersen A078890 a time-delay fuse?
No. The A078890 has a very fast-acting FA characteristic and is intended to interrupt fault current rapidly rather than tolerate extended temporary overloads.
Trusted Circuit Protection from Mersen
Mersen miniature fuses are used by equipment manufacturers, control engineers and maintenance professionals to deliver dependable protection for sensitive electronic, instrumentation and industrial control circuits.
