MF-R300-2

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PTC Resettable Fuses are a class of protective devices designed for electrical circuits. They are usually made with a polymer material, and are often referred to as Polyfuses or Polyswitches. They offer protection from the effects of overcurrent, as well as other electrical and thermal dangers.

MF-R300-2 is a specific type of PTC Resettable Fuse from SCHURTER and is designed for low circuit currents. It is designed to be used in applications like industrial electronic control systems, household appliances, automotive, set-top box, security products, home entertainment, communication and power supplies.

The fuse consists of two electrically conductive spots placed on a heat-resistant substrate. Under normal conditions, the two spots are in electrical contact and the fuse does not break the circuit. When an over current flows through these two spots, the conductive spot heats up and the contact breaks, thus cutting off the circuit.

When the over-current situation is cleared, the heated area by cooling co-operates with the non-heated area and the circuit resumes. This self-healing characteristic is known as “retry”.

This allows the device to provide protection for current overloads without having to be replaced continuously. The MF-R300-2 has a fusing current of 2A and a holding current of 0.7A. It also has a low thermal traveling time as well as flammability ratings of 94-5, V-0.

Under normal operating conditions, a PTC Resettable Fuse should allow the user to resume power after a short circuit or over-current situation. This makes it very useful in situations where fast response and reliable control are needed. It can also protect against power surges, and is commonly used in devices such as laptops and tablets.

These devices not only protect against current overloads, but can also act as fuse and surge protectors. They are often used to protect against incipient fault conditions in sensitive electronics, such as when a computer\'s power button is stuck. They are designed to protect the equipment from potential damage caused by current overloads.

The MF-R300-2 is designed to be used in low-voltage applications, such as circuit protection in telecommunications, medical equipment, computers, and audio/video components.

In conclusion, PTC Resettable Fuses, such as the MF-R300-2, are a useful type of protection device for electrical control systems. They are designed to provide fast response and reliable protection against power surges, over current and incipient faults, while allowing the user to safely reset the power after a fault. The fuse provides reliable operation at low current levels and can be used in a variety of applications, including telecommunications, medical equipment, audio/video, computers, and power supplies.

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