MF-USML350-2 Circuit Protection

PTC Resettable Fuses are comprised of polymeric Positive Temperature Coefficient (PTC) elements and current-sensitive action devices. Polymeric PTC elements are thermistors whose electrical resistance significantly increases when their temperatures reach a certain degree. When a current-sensitive action rotates, it breaks the circuit, thus protecting the system. The MF-USML350-2 is a PTC Resettable Fuse that offers superior protection for appliance, vehicle and electronic equipment from over-current and short-circuit.

Application Field

The MF-USML350-2 is an excellent choice for over-current and short-circuit protection in both stationary and mobile applications. It is suitable for a wide range of applications including industrial, automotive, consumer electronics and household appliances. Other suitable usage scenarios include lightning protection, over-voltage protection, over-charge protection, over-heating protection, etc. The excellent performance of the MF-USML350-2 makes it one of the most reliable and versatile protection devices on the market.

Working Principle

The MF-USML350-2 works by automatically disconnecting the circuit when a predetermined over-current or short-circuit appears on the line. As a result of this protection, there is no need for external fuses or circuit breakers, since the MF-USML350-2 is self-limiting and can reset itself with a push of a button.The PTC elements in the MF-USML350-2 are the core components of the device, and are responsible for over-current protection, short-circuit protection, over-voltage protection, and preventing over-heating. When there is an over-current or short-circuit, the element will increase its resistance, thus reducing the current in the circuit and preventing damage. After the over-current or short-circuit is removed, the PTC element will reset itself, allowing the device to be used again.The current-sensitive action device in the MF-USML350-2 acts as a safety valve in case of an over-current or short-circuit. If the current exceeds the preset threshold, the current-sensitive action device will open a contact and break the circuit, thus preventing further damage.

Conclusion

In conclusion, the MF-USML350-2 is an excellent choice for over-current and short-circuit protection in both stationary and mobile applications. It is highly reliable and versatile, and its excellent performance makes it one of the most popular PTC Resettable Fuses on the market. The PTC elements provide superior protection against excess current, while the current-sensitive action device protects against over-current or short-circuits.