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.
