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MERSEN FUSE 5SM 40MA MITTELTR. MI5SM25V0,04
Mersen Q218675 MI5SM25V0.04 medium time-lag 5 x 20 mm glass cartridge fuse rated at 40 mA and 250 V AC for sensitive electronic, instrumentation and industrial control circuits.
£4.03
Why Choose the Mersen Q218675 5SM Miniature Fuse?
The Mersen Q218675, catalogue reference MI5SM25V0.04, is a compact 5 x 20 mm medium time-lag miniature fuse designed to protect electrical distribution circuits, industrial controls and electronic equipment against overloads and short circuits. As part of the established Mersen 5SM IEC miniature fuse series, it provides accurate low-current protection while tolerating brief start-up surges.
The Q218675 features a transparent glass body that permits convenient visual inspection of the internal fuse element. Its medium time-lag characteristic helps prevent nuisance operation during short-duration current increases while ensuring dependable interruption when an excessive current persists.
Rated at 0.04 A, equivalent to 40 mA, and 250 V AC, this miniature fuse is suitable for sensitive control, instrumentation and electronic circuits. Its standard cylindrical dimensions allow straightforward installation in compatible 5 x 20 mm fuse holders and mounting clips.
Key Advantages
- Precise 40 mA overcurrent protection for sensitive circuits.
- 250 V AC voltage rating suitable for industrial and electronic equipment.
- Medium time-lag characteristic tolerates brief current surges.
- 300 A breaking capacity for reliable fault interruption.
- Compact 5 x 20 mm cartridge format for space-efficient installation.
- Transparent glass body enables visual inspection of the fuse element.
Key Features
- Mersen 5SM IEC miniature fuse series.
- Catalogue reference: MI5SM25V0.04.
- 0.04 A / 40 mA rated current.
- 250 V AC rated voltage.
- Medium time-lag operating characteristic.
- Standard 5 x 20 mm cylindrical cartridge size.
- Glass insulating body with silver-plated contacts.
- RoHS compliant construction.
Dependable Protection for Sensitive Low-Current Circuits
The Mersen Q218675 is engineered for circuits that require accurate protection at very low current levels. Its 40 mA rating helps safeguard sensitive instrumentation, monitoring circuits and electronic components against sustained overloads that could otherwise cause overheating or permanent damage.
The medium time-lag characteristic permits brief, harmless current increases without unnecessary fuse operation. This makes the Q218675 suitable for equipment containing capacitive or inductive components while preserving dependable protection against genuine fault conditions.
Typical Applications
- Industrial instrumentation.
- Monitoring and measurement circuits.
- Electronic control equipment.
- Low-current power supplies.
- Automation and control systems.
- OEM electrical and electronic assemblies.
Technical Specifications
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| Device Type | Fuse link | |
|---|---|---|
| Fuse Type | Miniature | |
| Fuse Size | 5x20 mm | |
| Fuse Class | Time delay | |
| Current | 0.04 A | |
| Voltage | 250 V | |
| Manufacturer | Mersen | |
| Series | 5SM IEC Miniature Fuses | |
| Model | Q218675 | |
| Catalogue reference | MI5SM25V0.04 | |
| Product type | Miniature cartridge fuse | |
| Rated current | 0.04 A | |
| Equivalent current | 40 mA | |
| Rated voltage | 250 V AC | |
| Current type | AC | |
| Operating characteristic | Medium time lag | |
| Fuse size | 5 x 20 mm | |
| Breaking capacity | 300 A | |
| Melting I²t | 0.008 A²s | |
| Power dissipation at rated current | 0.03 W | |
| Product diameter | 5.1 mm | |
| Product length | 20 mm | |
| Body material | Glass | |
| Mounting type | Clip or compatible fuse holder | |
| Product weight | Approx. 1.2 g | |
| RoHS compliant | Yes | |
| GTIN / EAN | 4086500014668 | |
| HS Code | 85361010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the Mersen Q218675 used for?
The Mersen Q218675 provides low-current overcurrent and short-circuit protection for sensitive instrumentation, electronic controls and industrial electrical circuits.
What is the current rating of the Q218675?
The fuse has a rated current of 0.04 A, which is equivalent to 40 mA.
What voltage is this fuse rated for?
The Mersen Q218675 is rated for operation at up to 250 V AC.
Is the Q218675 a fast-acting fuse?
No. It has a medium time-lag characteristic, allowing it to tolerate brief current surges before operating during a sustained overload or short circuit.
What size is the Mersen Q218675?
The fuse has a standard cylindrical cartridge size of 5 x 20 mm and is intended for installation in a compatible fuse holder or mounting clip.
Trusted by Electrical and Electronics Professionals
Mersen miniature fuses are trusted by control engineers, electronics designers and equipment manufacturers for precise overcurrent protection, dependable fault interruption and consistent performance in sensitive electrical circuits.
