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MERSEN FUSE 250V M 3,15 A 5.25 MI5M25V3,15P
Mersen R079020 miniature cartridge fuse rated at 3.15 A and 250 V AC, featuring an M time-lag characteristic and compact 5 x 25 mm cylindrical format.
£12.43
Why Choose the Mersen R079020 Ceramic Miniature Fuse?
The Mersen R079020 is a compact ceramic miniature cartridge fuse designed to provide dependable overcurrent and short-circuit protection for industrial control equipment, electronic assemblies and electrical circuits. Its cylindrical 5 × 25 mm format is suitable for installation in compatible fuse holders where reliable protection is required within a limited space.
Featuring an M time-lag operating characteristic, the R079020 can tolerate brief current surges that occur during equipment start-up while still responding to sustained overloads and short circuits. This makes it suitable for circuits containing transformers, power supplies, capacitors, relays and other components that may produce temporary inrush currents.
With a rated current of 3.15 A and a rated voltage of 250 V AC, the Mersen R079020 provides effective circuit protection for a wide range of industrial and electronic applications. Its robust cartridge construction supports consistent operation and straightforward replacement during routine equipment maintenance.
Key Advantages
- Compact 5 × 25 mm miniature cartridge fuse.
- 3.15 A rated current for electronic and industrial control circuits.
- 250 V AC voltage rating.
- Time-lag characteristic accommodates temporary start-up currents.
- Helps protect equipment against sustained overloads and short circuits.
- Replaceable cylindrical format simplifies equipment maintenance.
Key Features
- Mersen R079020 miniature fuse.
- 3.15 A rated current.
- 250 V AC rated voltage.
- M time-lag operating characteristic.
- 5 × 25 mm cylindrical cartridge format.
- Designed for installation in a compatible fuse holder.
- Suitable for circuits with temporary inrush currents.
- Provides overload and short-circuit protection.
Dependable Protection for Circuits with Inrush Current
Electrical equipment containing transformers, capacitors, motors and power supplies can draw a temporary surge of current when energised. A time-lag fuse such as the Mersen R079020 is designed to withstand these short-duration peaks, helping reduce unnecessary fuse operation during normal equipment start-up.
When an overload persists or a short circuit occurs, the fuse interrupts the current to help protect wiring and connected components from further damage. Its compact cartridge design makes it suitable for control equipment, electronic devices and machinery requiring serviceable circuit protection.
Typical Applications
- Industrial control equipment.
- Electronic power supplies.
- Control transformers and relay circuits.
- Instrumentation and measurement equipment.
- Electrical control panels.
- Equipment with temporary start-up or inrush currents.
Technical Specifications
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| Current | 3.15 A | |
|---|---|---|
| Voltage | 250 V | |
| Device Type | Fuse link | |
| Fuse Type | Miniature | |
| Fuse Size | 5x25 mm | |
| Fuse Class | Time delay | |
| Manufacturer | Mersen | |
| Model | R079020 | |
| Product type | Miniature cartridge fuse | |
| Rated current | 3.15 A | |
| Rated voltage | 250 V AC | |
| Fuse size | 5 × 25 mm | |
| Operating characteristic | M, time lag | |
| Construction | Cylindrical cartridge | |
| Mounting type | Compatible fuse holder | |
| Primary function | Overload and short-circuit protection | |
| Typical circuit type | AC electrical and electronic circuits | |
| Replacement format | Removable cartridge fuse |
Frequently Asked Questions
What is the Mersen R079020 used for?
The Mersen R079020 protects electrical and electronic circuits against sustained overloads and short-circuit currents.
What is the current rating of the R079020 fuse?
The fuse has a rated current of 3.15 A.
What voltage is the Mersen R079020 rated for?
The R079020 is rated for use on circuits operating at up to 250 V AC.
Is the Mersen R079020 a fast-acting fuse?
No. It has an M time-lag characteristic, allowing it to tolerate brief start-up and inrush currents before operating under a sustained fault.
What fuse holder is required for the R079020?
The fuse has a 5 × 25 mm cylindrical cartridge format and should be installed in a compatible holder with suitable voltage and current ratings.
Trusted Circuit Protection from Mersen
Mersen miniature fuses are used by equipment manufacturers, panel builders and electrical engineers to provide dependable overcurrent protection for electronic equipment, control systems and industrial electrical circuits.
