BUSSMANN JJS-400 Very Fast Acting Fuse, 400 A, 600 V, Current Limiting

Bussmann JJS-400 Class-T fuse is ideal for safeguarding electrical circuits and equipment from excessive current levels. Its Class-T designation signifies its fast-acting nature, providing quick response to short-circuit and overload conditions and preventing potential damage & downtime. It is used in industrial machinery, power distribution panels, renewable energy systems and data centres.

Working Mechanism:

• When the current passing through the fuse exceeds its rated value due to an overload or short circuit, the fuse starts to respond.
• The high current causes the fuse element inside to heat up rapidly.
• As the temperature of the fuse element rises, it reaches a critical point where the element melts or breaks, creating an open circuit.
• This interruption in the circuit disconnects the faulty or overloaded section from the power source.
• The interruption prevents excessive current from flowing, protecting connected equipment and preventing damage or hazards.
• After the fuse element breaks, the fuse needs to be replaced to restore the circuit's functionality, making maintenance straightforward.

Features:

• This Class T, fast-acting fuse provides reliable protection against short-circuit & overload conditions in electrical circuits.
• It has a holder-based mounting design for easy installation.
• This industrial power fuse features a cartridge blade style, protection against overloads and short circuits in high-power industrial applications.
• It has an interrupt rating of 200kAIC.
• This fast blow fuse features a knife blade termination style for secure connections.

Frequently Asked Questions:

Q. What does Class-T mean in the fuse's name?

A. Class-T refers to the specific type of fuse, indicating its fast-acting and time-delay characteristics, suitable for protecting high-current circuits.

Q. How do I prevent this JJS-400 fuse from electrical hazards and short circuits?

A.

• Ensure that the fuse's current rating matches the circuit to prevent overloading and hazards.
• Match the voltage rating of the fuse to the circuit to avoid electrical breakdown.
• Regularly inspect the fuse for damage, corrosion or wear and replace as needed.
• Install the fuse securely in its holder to prevent arcing or overheating.
• Choose an appropriate environment with proper temperature and humidity conditions.
• Select the correct fuse type (fast-acting or time-delay) based on equipment needs.
• Implement additional protection mechanisms like circuit breakers for short circuit prevention.

Q. What are the factors to consider while choosing the right fuse for my application?

A.

• Current and voltage rating
• Interrupt rating
• Time-current characteristics
• Application type
• Operating environment
• Physical size and mounting

Q. What is the current rating of this fuse?

A. The fuse has a current rating of 400 A. Customers searching for a fuse with higher current ratings can opt for Bussmann JJS-800 Fusethat has an amperage rating of 800A.