MERSEN FUSE 400V FA 0,8 A 5.20 MI5FA40V0,8

Why Choose the Mersen L093321 High Speed Semiconductor Fuse?

The Mersen L093321 is a compact high speed semiconductor miniature fuse designed to provide rapid protection for sensitive electronic components and semiconductor devices. Part of the Mersen MI5FA 400 V fuse series, it uses a very fast-acting FA characteristic to interrupt overcurrent and short-circuit faults before excessive thermal energy can damage protected equipment.

This miniature fuse combines fast fault clearance with a compact cylindrical construction suitable for industrial electronics, control systems, instrumentation and power conversion equipment. Its very high breaking capacity helps provide dependable protection in applications where conventional general-purpose fuses may not respond quickly enough.

With a rated current of 0.8 A, a rated voltage of 400 V AC and a compact 5 × 20 mm body, the Mersen L093321 provides effective semiconductor protection while requiring minimal installation space. Its clip-mounted format enables straightforward fitting and replacement within a compatible fuse holder.

Key Advantages

• Very fast-acting semiconductor protection fuse.
• 0.8 A rated current for precise electronic circuit protection.
• 400 V AC voltage rating for demanding applications.
• Compact 5 × 20 mm miniature fuse format.
• Very high breaking capacity supports dependable fault interruption.
• Clip-mounted design allows convenient installation and replacement.

Key Features

• Mersen MI5FA semiconductor miniature fuse series.
• 0.8 A rated current.
• 400 V AC rated voltage.
• High Speed FA operating characteristic.
• 5 × 20 mm cylindrical fuse size.
• Clip mounting for compatible fuse holders.
• Very high breaking capacity.
• Designed for sensitive semiconductor component protection.
• RoHS-compliant construction.

Fast Protection for Sensitive Electronic Components

Semiconductor components can be damaged by excessive current within a fraction of a second. The Mersen L093321 is designed to operate rapidly, helping reduce the electrical and thermal energy transferred to protected components during an overcurrent or short-circuit fault.

Its very fast FA characteristic, compact dimensions and dependable breaking performance make it suitable for electronic assemblies, industrial control systems and power conversion equipment where reliable protection and minimal downtime are essential.

Typical Applications

• Semiconductor device protection.
• Industrial electronic equipment.
• Power supplies and conversion circuits.
• Automation and process control systems.
• Electronic measuring and control equipment.
• Test and instrumentation systems.