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MERSEN FUSE 400V SA 0,063 A 5.20 MI5SA40V0,063
Mersen R078928 MI5SA40V0.063 ceramic miniature cartridge fuse rated at 0.063 A and 400 V AC, with a 5 x 20 mm body and SA semi time-delay characteristic.
£5.77
Why Choose the Mersen R078928 Ceramic Miniature Fuse?
The Mersen R078928, catalogue reference MI5SA40V0.063, is a compact ceramic miniature cartridge fuse designed to protect sensitive electrical and electronic circuits against sustained overloads and short-circuit currents. Its standard 5 × 20 mm format makes it suitable for installation in compatible fuse holders used throughout industrial control and electronic equipment.
Featuring an SA semi time-delay operating characteristic, the fuse can tolerate brief current surges without unnecessary operation while still responding effectively to persistent overcurrent conditions. This behaviour is useful in circuits containing transformers, capacitors, power supplies and other components that can generate temporary inrush currents during energisation.
With a rated current of 0.063 A and a rated voltage of 400 V AC, the R078928 provides precise protection for low-current circuits. Its durable ceramic body offers reliable thermal performance and supports dependable fault interruption in industrial electronics, instrumentation and control applications.
Key Advantages
- Compact 5 × 20 mm ceramic cartridge fuse.
- 0.063 A rated current for sensitive low-current circuits.
- 400 V AC voltage rating for industrial and electronic equipment.
- SA semi time-delay characteristic accommodates brief inrush currents.
- Ceramic body provides robust thermal and electrical performance.
- Standard cylindrical format allows straightforward fuse replacement.
Key Features
- Mersen MI5SA40V0.063 miniature fuse.
- 0.063 A rated current.
- 400 V AC rated voltage.
- SA semi time-delay operating characteristic.
- 5 × 20 mm cylindrical fuse body.
- Durable ceramic construction.
- Designed for installation in compatible fuse holders.
- Provides overload and short-circuit protection.
Precise Protection for Low-Current Circuits
Low-current control and instrumentation circuits require accurately rated protection to prevent wiring and components from being damaged by prolonged overloads or electrical faults. The Mersen R078928 provides a low 0.063 A current rating for circuits where conventional higher-rated miniature fuses would not provide sufficiently sensitive protection.
Its semi time-delay characteristic helps the fuse withstand harmless, short-duration current peaks while maintaining protection against persistent faults. The ceramic cartridge construction also makes it suitable for demanding industrial environments where reliable circuit protection and consistent performance are required.
Typical Applications
- Industrial control and automation equipment.
- Instrumentation and measurement circuits.
- Electronic control modules.
- Low-current power supply circuits.
- Control transformers and relay circuits.
- Printed circuit board fuse holders.
Technical Specifications
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| Voltage | 400 V | |
|---|---|---|
| Device Type | Fuse link | |
| Fuse Type | Miniature | |
| Fuse Size | 5x20 mm | |
| Fuse Class | Time delay | |
| Manufacturer | Mersen | |
| Item number | R078928 | |
| Catalogue number | MI5SA40V0.063 | |
| Product type | Ceramic miniature cartridge fuse | |
| Rated current | 0.063 A | |
| Rated voltage | 400 V AC | |
| Fuse size | 5 × 20 mm | |
| Operating characteristic | SA, semi time delay | |
| Body material | Ceramic | |
| Mounting type | Compatible fuse holder | |
| Primary function | Overload and short-circuit protection | |
| EAN | 3605340032918 |
Frequently Asked Questions
What is the Mersen R078928 used for?
The Mersen R078928 protects sensitive low-current electrical and electronic circuits against sustained overloads and short-circuit currents.
What is the current rating of the R078928 fuse?
The fuse has a rated current of 0.063 A, equivalent to 63 mA.
What voltage is the Mersen R078928 rated for?
The R078928 is rated for circuits operating at up to 400 V AC.
Is the R078928 a fast-acting fuse?
No. It has an SA semi time-delay characteristic, allowing it to tolerate brief inrush currents while protecting against sustained faults.
What fuse holder is required for the Mersen R078928?
The fuse has a standard 5 × 20 mm cylindrical body and should be installed in a compatible fuse holder with the correct voltage and current ratings.
Trusted Circuit Protection from Mersen
Mersen ceramic miniature fuses are used by equipment manufacturers, automation engineers and control panel builders to deliver dependable protection for sensitive industrial electronics, instrumentation and electrical control circuits.
