BUSSMANN DFJ-40 High Speed Fuse, 40 A, Clip Lock, Melamine Tube

Bussmann DFJ-40 high-speed fuse is used in industrial applications requiring precise and rapid protection against overcurrent conditions. It has a fast-acting nature and high interrupt rating for safeguarding equipment and circuits sensitive to even brief power surges. This fuse ensures operational continuity by preventing damage to components and minimising downtime in critical systems.

Working Mechanism:

• When an overcurrent occurs, this DFJ-40 fuse detects the anomaly.
• Due to its fast-acting nature, this fuse responds swiftly to the overcurrent, initiating the protection process.
• This fuse's internal element melts rapidly in response to the overcurrent, breaking the circuit.
• As the element melts, an open circuit forms, interrupting the flow of current and preventing further damage.

Features:

• This non-indicating fuse features a melamine body for structural rigidity and electrical insulation.
• It has a cylindrical body with a diameter of 1-1/16 inches and a depth of 1-1/16 inches.
• This Class J single element fuse offers an interrupt rating of 200kA at 600VAC and 100kA at 450 VDC for fast-acting protection.
• This non rejection fuse offers a voltage rating of 600VAC / 450VDC.

Compatible Accessories:

• Bussmann CH30J1 Fuse Block: This finger-safe fuse block is suitable to house the brand's DFJ-40 fuse, preventing hazards due to short circuits. This fuse block can be snap-mounted to a 35 mm DIN rail and has bolt holes for mounting to a panel. It has a visual indicator for easy identification of the blown fuses for replacement.

Frequently Asked Questions:

Q. How do I mount this high speed fuse?

A.

• Choose a suitable location on the DIN rail for mounting.
• Engage the fuse module onto the DIN rail, aligning the mounting clips.
• Lock the module in place by securing the locking mechanism or clips.
• Connect the circuit wiring to the fuse module terminals.
• Ensure that the module is securely attached to the rail.
• Check the fuse's functionality after installation.

Q. What safety precautions should I take while using this Bussmann DFJ-40 high speed fuse?

A.

• Ensure that the power is off before installing or replacing the fuse.
• Use a fuse with the correct current rating to avoid overloading.
• Adhere to manufacturer instructions for installation and operation.
• Let trained personnel handle fuse-related tasks.
• Ensure that the fuse's operating temperature range is not exceeded.
• Periodically inspect the fuse for damage or wear.

Q. Does Raptor Supplies offer Bussmann Class J high speed fuses with higher amperage ratings?

A. Yes, Raptor Supplies has other Bussmann high speed fuses with higher fuse amperage ratings, such as DFJ-125, DFJ-250, DFJ-400 and DFJ-500 high speed fuses having amperage ratings of 125, 250, 400 and 500A respectively.