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MERSEN FUSE 250V SA 4 A 5.20 MI5SA25V4
Mersen Q087023 MI5SA25V4 semiconductor miniature fuse rated 4 A and 250 V AC, featuring a medium time-lag SA characteristic in a compact 5 x 20 mm clip-mounted format.
£2.37
Why Choose the Mersen Q087023 MI5SA25V4 Semiconductor Miniature Fuse?
The Mersen Q087023, catalogue reference MI5SA25V4, is a compact semiconductor miniature fuse designed to provide dependable overcurrent protection for sensitive electronic components, control apparatus and industrial equipment. It forms part of Mersen's MI5 SA/SB 125–250 V miniature fuse range.
Rated at 4 A and 250 V AC, the Q087023 features a medium time-lag SA operating characteristic. This controlled response allows the fuse to withstand brief start-up currents and short-duration surges while continuing to protect the circuit against sustained overloads and short-circuit conditions.
The fuse uses a standard 5 × 20 mm cylindrical cartridge format designed for clip mounting in a compatible miniature fuse holder. Its compact dimensions and surge-tolerant operating characteristic make it suitable for semiconductor devices, power supplies, instrumentation, automation systems and electronic control equipment.
Key Advantages
- Reliable protection for sensitive semiconductor and electronic circuits.
- 4 A current rating for control and electronic applications.
- 250 V AC voltage rating for low-voltage equipment.
- Medium time-lag characteristic accommodates brief inrush currents.
- Helps protect electronic components against sustained overcurrents.
- Compact 5 × 20 mm format for space-conscious installations.
Key Features
- Mersen MI5 SA/SB semiconductor miniature fuse series.
- Catalogue reference: MI5SA25V4.
- Manufacturer part number: Q087023.
- Rated current: 4 A.
- Rated voltage: 250 V AC.
- Medium time-lag SA operating characteristic.
- Compact cylindrical cartridge construction.
- Standard 5 × 20 mm fuse dimensions.
- Designed for clip mounting in a compatible fuse holder.
- Suitable for semiconductor devices and control apparatus.
Reliable Protection for Circuits with Inrush Current
Electronic equipment may produce brief inrush currents when it is switched on. A medium time-lag fuse is designed to tolerate these temporary current increases without unnecessary operation while continuing to disconnect persistent overloads and short circuits.
The Mersen Q087023 combines controlled time-delay performance with a compact cartridge design. This makes it suitable for electronic and industrial control circuits where resistance to nuisance fuse operation and reliable overcurrent protection are both important.
Typical Applications
- Semiconductor protection circuits.
- Industrial control equipment.
- Electronic power supplies.
- Instrumentation and monitoring systems.
- Automation and signalling equipment.
- Control apparatus with temporary inrush currents.
- Electronic equipment assemblies.
- OEM machinery and control panels.
Technical Specifications
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| Current | 4 A | |
|---|---|---|
| Voltage | 250 V | |
| Device Type | Fuse link | |
| Fuse Type | Miniature, Semiconductor | |
| Fuse Size | 5x20 mm | |
| Fuse Class | Time delay | |
| Manufacturer | Mersen | |
| Series | MI5 SA/SB 125–250 V Semiconductor Miniature Fuses | |
| Model | MI5SA25V4 | |
| Part number | Q087023 | |
| Product type | Semiconductor miniature fuse | |
| Rated current | 4 A | |
| Rated voltage | 250 V AC | |
| Electrical system | AC | |
| Operating characteristic | Medium time-lag SA | |
| Fuse size | 5 × 20 mm | |
| Mounting type | Clip mounting | |
| Application | Semiconductor and control apparatus protection |
Frequently Asked Questions
What is the Mersen Q087023 used for?
The Q087023 protects semiconductor devices, electronic equipment and industrial control circuits against sustained overloads and short-circuit faults.
What current rating does the Q087023 have?
The Mersen Q087023 has a rated current of 4 A.
What voltage is this fuse rated for?
This semiconductor miniature fuse is rated for operation at up to 250 V AC.
Is the Mersen Q087023 a fast-acting fuse?
No. It has a medium time-lag SA characteristic, allowing it to withstand brief inrush currents while protecting against sustained electrical faults.
How is the Q087023 installed?
The fuse has a standard 5 × 20 mm cylindrical cartridge format and is designed for clip mounting in a compatible miniature fuse holder.
Trusted by Electronics and Automation Engineers
Mersen semiconductor miniature fuses are used by equipment manufacturers, control-panel builders and maintenance engineers to provide dependable protection for sensitive electronic components and industrial control systems.
