MF-S120

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PTC (positive temperature coefficient) resettable fuses offer electrical protection in a wide variety of application fields, providing users with the added safety of a resettable device. The MF-S120 is one such device, and its working principle is based on the fact that an increase in temperature causes a decrease in electric current. This principle allows the device to protect against short circuits, overloads, and other similar adverse conditions that can occur in electrical circuits.

The MF-S120 is designed to open the circuit automatically when the current exceeds a preset rating, and then automatically resets itself when the current returns to its normal level. The device features a “thermal cut-off” mechanism, which is responsible for cutting off the current when the preset rating is exceeded. The device also features an LED indicator that shows when the device is in an “open” state.

The MF-S120 is designed for use in a variety of applications, including computers, home electronics, drones, medical equipment, telecommunications, and automotive applications. It is also used in power supplies, control systems, and other sensitive electronic components.

The MF-S120 is easy to integrate into circuit designs due to its small size, low cost, and fast response times. In addition, the device is RoHS compliant, ensuring that it is lead-free and free of other hazardous substances. The device is also UL approved, ensuring safety and reliability.

The working principle behind the MF-S120 is based on a mechanical “snap action” mechanism. When the current passes through the device, it is met with a predetermined resistance. If the current exceeds the predetermined resistance, the device will activate the thermal cut-off mechanism, which will open the circuit.

Once the circuit is open, the thermal cut-off will reset itself, restoring the circuit to its original state. However, if the current reappears at a higher level, the device will again activate the thermal cut-off and open the circuit.

In addition to being used for general-purpose over-current protection, the MF-S120 is also used for applications such as surge protection, voltage protection, and short circuit protection. The device is available in various rated voltages and amperages, making it suitable for a variety of applications.

The MF-S120 is a reliable and cost-effective way to protect sensitive electronics from damage due to extreme electrical conditions. The device is easy to install, easy to use, and provides reliable current over-current protection.

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