MERSEN FUSE 400V SA 0,08 A 5.20 MI5SA40V0,08

Why Choose the Mersen S078929 Semiconductor Miniature Fuse?

The Mersen S078929 is a compact high-speed miniature fuse designed to protect sensitive semiconductor devices and electronic circuits against damaging overcurrents and short circuits. As part of the Mersen MI5 SA 400V series, it provides rapid fault interruption in a space-saving cylindrical format suitable for industrial control and electronic equipment.

With a rated current of 0.08 A and a rated voltage of 400 V AC, the S078929 is intended for low-current circuits where conventional general-purpose fuses may not respond quickly enough to protect sensitive components. Its semiconductor protection characteristic helps limit the electrical energy passed through the circuit during a fault.

The fuse uses a compact 5 × 20 mm cartridge format, allowing straightforward installation in compatible fuse holders and electronic assemblies. Its combination of a low current rating, high-speed response and 400 V AC capability makes it suitable for instrumentation, automation equipment, control electronics and power conversion circuits.

Key Advantages

• High-speed miniature fuse designed for sensitive semiconductor circuits.
• 0.08 A rated current for low-current electronic protection.
• 400 V AC rated voltage for industrial applications.
• Compact 5 × 20 mm cartridge format.
• Rapid operation helps minimise damaging let-through energy.
• Manufactured by Mersen for reliable and consistent circuit protection.

Key Features

• Mersen MI5 SA 400V series.
• 0.08 A rated current.
• 400 V AC rated voltage.
• High-speed SA operating characteristic.
• Compact 5 × 20 mm cylindrical fuse body.
• Cartridge design for compatible fuse holders.
• Designed for semiconductor and sensitive electronic protection.
• Suitable for industrial control and automation equipment.

Rapid Protection for Sensitive Electronic Circuits

Semiconductor devices can be damaged by relatively short overcurrent events. High-speed fuses such as the Mersen S078929 are engineered to interrupt fault currents rapidly, helping reduce the thermal and electrical stress placed on sensitive components.

The compact 5 × 20 mm construction makes the S078929 suitable for equipment where installation space is limited. Its 0.08 A rating allows precise protection of low-current circuits used in instrumentation, automation controls and electronic assemblies.

Typical Applications

• Semiconductor protection circuits.
• Industrial control equipment.
• Electronic instrumentation.
• Automation and monitoring systems.
• Power supply control circuits.
• OEM electronic assemblies.