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MERSEN FUSE 250V SA 20 A 6.32 P MI6SA25V20P
Mersen X099472 MI6SA25V20P medium time-lag semiconductor miniature fuse rated at 20 A and 250 V AC, featuring a 6.3 x 32 mm ceramic body and striker indication.
£16.10
Why Choose the Mersen X099472 Semiconductor Miniature Fuse?
The Mersen X099472, catalogue number MI6SA25V20P, is a compact and reliable semiconductor miniature fuse designed to protect sensitive electronic components, control apparatus and electrical circuits against damaging overcurrents. It forms part of Mersen’s 6.3 × 32 mm SA miniature fuse range for applications where short-duration current surges may occur during normal operation.
Its medium time-lag SA characteristic allows the fuse to tolerate temporary inrush and transient currents while still providing dependable protection against sustained overloads and short circuits. This operating behaviour makes the X099472 suitable for electronic power supplies, semiconductor equipment, control systems and other installations that require a balance between surge tolerance and effective circuit protection.
Rated at 20 A and 250 V AC, the Mersen X099472 uses a robust ceramic cartridge body with a very high breaking capacity. An integrated striker provides an indication when the fuse has operated, while its ferrule terminals and clip-mounted design allow straightforward installation in compatible 6.3 × 32 mm fuse holders.
Key Advantages
- Medium time-lag SA fuse characteristic accommodates temporary inrush currents.
- 20 A rated current for electronic and industrial control equipment.
- 250 V AC rated voltage for compatible low-voltage circuits.
- Very high breaking capacity supports reliable fault-current interruption.
- Integrated striker indication system helps identify an operated fuse.
- Compact 6.3 × 32 mm ceramic cartridge construction.
Key Features
- Mersen X099472 semiconductor miniature fuse.
- Catalogue number MI6SA25V20P.
- 20 A rated current.
- 250 V AC IEC rated voltage.
- Medium time-lag SA operating characteristic.
- Designed to withstand short-term surge and inrush currents.
- 720 A²s clearing I²t at rated voltage.
- Integrated striker-type trip indication.
- Ceramic cartridge body with ferrule terminals.
- Clip-mounted 6.3 × 32 mm format.
Reliable Protection with Inrush Current Tolerance
Electrical and electronic equipment can experience temporary current peaks during start-up, capacitor charging or switching operations. A medium time-lag fuse such as the Mersen X099472 is designed to withstand these expected short-term surges while operating when an excessive current continues for long enough to endanger the circuit.
The fuse’s ceramic construction and high breaking capacity support reliable operation during fault conditions. Its integrated striker can also assist maintenance teams with fault identification, making the X099472 suitable for control panels, power conversion equipment and electronic systems where efficient servicing is important.
Typical Applications
- Semiconductor devices and electronic control circuits.
- Industrial measuring and control apparatus.
- Electronic power supplies and converters.
- Automation panels and machinery controls.
- Equipment with temporary inrush or transient currents.
- Fuse monitoring systems using striker indication.
Technical Specifications
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| Current | 20 A | |
|---|---|---|
| Voltage | 250 V | |
| Device Type | Fuse link | |
| Fuse Type | Miniature, Semiconductor | |
| Fuse Size | 6.3x32 mm | |
| Fuse Class | Time delay | |
| Manufacturer | Mersen | |
| Series | Semiconductor Miniature Fuses Size 6 × 32 SA 125–250 V | |
| Item number | X099472 | |
| Catalogue number | MI6SA25V20P | |
| Product type | Semiconductor miniature cartridge fuse | |
| Rated current | 20 A | |
| Rated voltage | 250 V AC | |
| Current type | AC | |
| Speed characteristic | Medium time-lag | |
| Design characteristic | SA | |
| Clearing I²t at rated voltage | 720 A²s | |
| Fuse size | 6.3 × 32 mm | |
| Product diameter | approx. 6.3 mm | |
| Product length | approx. 32 mm | |
| Mounting type | Clip mounting | |
| Terminal type | Ferrule | |
| Indication system | Yes | |
| Indication type | Striker | |
| Body material | Ceramic | |
| Product weight | approx. 2.5 g | |
| EAN | 3605340161793 | |
| UL/CSA recognition | UL/CSA 248-1 range | |
| RoHS compliant | Yes | |
| REACH compliant | Yes |
Frequently Asked Questions
What is the Mersen X099472 used for?
The Mersen X099472 is used to protect semiconductor devices, sensitive electronic components and control equipment against sustained overcurrents and short circuits.
What is the current rating of the Mersen X099472?
The fuse has a rated current of 20 A.
What voltage is the X099472 rated for?
The Mersen X099472 has an IEC rated operating voltage of 250 V AC.
What does the SA characteristic mean?
The SA designation identifies a medium time-lag characteristic that allows the fuse to tolerate temporary inrush currents while protecting against sustained overloads and short circuits.
Does the Mersen X099472 include fuse indication?
Yes. The X099472 includes an integrated striker-type indication system that helps identify when the fuse has operated.
Trusted for Electronic Circuit Protection
Mersen semiconductor miniature fuses are used by electronic equipment manufacturers, automation engineers and industrial maintenance professionals to provide dependable overcurrent protection in circuits subject to transient and inrush current conditions.
