BUSSMANN FNQ-R-2 Fuse, 2 A, Non-Indicating, 200 kAIC, 600 V

How do I choose the right fuse for my application?

The right fuse is chosen based on factors, such as voltage rating, current rating, time-delay characteristics and physical dimensions.

What is the difference between a fuse and a circuit breaker?

Fuses and circuit breakers both protect electrical circuits from overcurrent conditions, but they operate differently. Fuses contain a metal wire that melts to interrupt the circuit, while circuit breakers use an electromechanical mechanism to trip and open the circuit.

What is meant by the time-delay characteristic of a fuse?

A time-delay fuse, also known as a slow-blow fuse, has a delay before it interrupts the circuit, allowing temporary overloads to pass without tripping. This feature is useful in applications where brief overcurrents are expected, such as motor starting currents.

What safety precautions should I take when using this fuse?

• Ensure the circuit is de-energised before installing or replacing the fuse.
• Use insulated tools and wear appropriate personal protective equipment.
• Select the correct fuse size and type matching circuit specifications.
• Avoid exceeding rated voltage and current limits to prevent overheating.
• Follow proper installation procedures for secure mounting.
• Regularly inspect for signs of damage or wear and replace faulty components promptly.
• Address the root cause of overcurrent conditions when replacing blown fuses.