BUSSMANN FWA-50A21F High Speed Fuse, 50 A, 500 VAC/DC

Bussmann FWA-50A21F fuse is used in electrical settings for interrupting the fault current during overloads and short circuit conditions. This fast-blow fuse senses sensitive changes in the current flow and is occasionally coupled with an indicating fuse block or cover to enhance visibility and diagnostics.

Features:

• It features a single-element design for rapid protection in medium voltage circuits.
• This high-speed fuse has a cylindrical body ensuring a seamless and secure installation.
• It has interrupt ratings of 100kA at 150VAC and 100kA at 150VDC for enhanced circuit protection against high current incidents.
• This fast-blow semiconductor fuse is made of melamine for structural rigidity and electrical insulation.

Compatible Accessories:

• Bussmann FP-3 Fuse Puller: This electrical fuse puller offers an extended reach to access confined spaces where fuses might be out of hand's reach. It maintains a safe distance between hands and wires, ensuring insulation against electrical shock hazards.

Frequently Asked Questions:

Q. What ae the factors to consider while selecting an appropriate Bussmann fuse?

A.

• Regular operational current
• Operating voltage
• Ambient temperature conditions
• Initial inrush currents
• Peak fault current
• Required duration for the fuse to open

Q. How can you check a fuse without a fuse tester?

A.

• Use wire strippers to remove around an inch of insulation from both wire ends.
• Connect one wire end to a fuse terminal and the other to the opposite terminal on the fuse.
• If the fuse is functional, the connected light bulb will illuminate.
• Conversely, if the fuse is malfunctioning, the light bulb will not light up.

Q. What is the main difference between fast-blow and slow-blow fuses?

A. The main difference lies in their response time to overcurrent events. Fast-blow fuses react very quickly to overcurrent conditions, breaking the circuit almost instantly. Slow-blow fuses, on the other hand, have a delayed response to allow temporary overcurrent conditions that might occur during normal operation without triggering the fuse.