MERSEN FUSE 400V FA 0,05 A 6.32 MI6FA40V0,05

Why Choose the Mersen E078917 High-Speed Semiconductor Fuse?

The Mersen E078917 is a compact high-speed semiconductor protection fuse designed to protect sensitive power electronic components against damaging overcurrents and short circuits. Also identified by the manufacturer reference MI6FA40V0,05, it provides very fast fault interruption for low-current electronic and semiconductor circuits.

With a rated current of 0.05 A and a rated voltage of 400 V AC, the E078917 is particularly suited to sensitive circuits where precise protection and minimal let-through energy are essential. Its fast-acting FA characteristic helps disconnect fault currents before excessive electrical or thermal energy can damage delicate components.

The fuse uses a compact 6.3 × 32 mm cartridge format, enabling integration into industrial electronic equipment, control assemblies and specialist semiconductor protection circuits. Manufactured by Mersen, it offers dependable performance for equipment builders, maintenance engineers and automation specialists.

Key Advantages

• Very fast fault interruption for sensitive semiconductor circuits.
• 0.05 A current rating for precise low-current protection.
• 400 V AC voltage rating for industrial electronic applications.
• Compact 6.3 × 32 mm cartridge construction.
• Low let-through energy helps reduce component damage.
• Manufactured by Mersen for dependable electrical protection.

Key Features

• Mersen MI6FA40V0,05 miniature semiconductor fuse.
• 0.05 A rated current.
• 400 V AC rated voltage.
• Fast-acting FA operating characteristic.
• 6.3 × 32 mm miniature cartridge format.
• Designed for low-current semiconductor protection.
• Rapid operation during short-circuit and overcurrent conditions.
• Suitable for industrial electronics and control equipment.

Reliable Protection for Low-Current Electronic Circuits

High-speed semiconductor fuses are engineered to interrupt fault currents more quickly than conventional general-purpose fuses. This rapid response helps protect sensitive electronic components that may otherwise be damaged before a standard fuse can safely disconnect the circuit.

The Mersen E078917 combines a very low current rating with a fast operating characteristic, making it suitable for specialist control and monitoring circuits. Its compact dimensions also allow it to be incorporated into space-conscious industrial equipment and electronic assemblies.

Typical Applications

• Semiconductor protection circuits.
• Industrial electronic control equipment.
• Low-current monitoring circuits.
• Instrumentation and measurement equipment.
• Power conversion electronics.
• Automation control assemblies.
• Industrial power supplies.
• Specialist electronic equipment.