MF-LS300S

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PTC Resettable Fuses are also commonly referred to as Polyfuse, Polymer Fuses, or Polymeric Positive Temperature Coefficient (PPTC) devices. PTC Resettable Fuses are available in various configurations, with the most popular being MF-LS300S. These devices are used to protect circuits from overcurrents, as they are designed to detect and disrupt excessive electric current, at which point it will then change from a low resistance state to a high resistance state.

The MF-LS300S Resettable Fuse application field focuses on the protection of data lines, communication lines, telecommunication equipment, and other related sensitive electronic equipment from over-current damage. This PTC Resettable Fuse is designed to cut off the current when the current is larger than the rated hold current value (typically 300mA). Once the current is lowered below the determined hold value, the PTC Resettable Fuse will reset itself and the circuit will be restored to its original condition.

The working principle of the MF-LS300S Resettable Fuse is based on the principle of heating effect. When a current overload passes through the wires, it will generate heat. When the temperature of the PTC Resettable Fuse rises to a certain point, it will open the switch, making the two ends of the wire quickly separate.This will happen when the current exceeds the specified overload current. Therefore, the rated current of this PTC Resettable Fuse is relatively limited and can only be used in the circuit with current small.

The MF-LS300S Resettable Fuse also features a form-locking terminal structure. This feature makes sure that the PTC Resettable Fuse is locked in the desired position after installation, providing excellent reliability during operation. In addition, this PTC Resettable Fuse has a precision temperature characteristic, allowing the precise detection of the overload current. This ensures that the circuit is protected from damage due to overload. Finally, the MF-LS300S Resettable Fuse has a wide working temperature range, making it suitable for a variety of applications.

In conclusion, the MF-LS300S Resettable Fuse is an effective solution to protect circuits from over-current damage. It is available in various configurations, with the most popular being MF-LS300S. This PTC Resettable Fuse has a form-locking terminal structure, a precision temperature characteristic, and a wide working temperature range. It is designed to detect and disrupt excessive electric current, at which point it will then change from a low resistance state to a high resistance state. This makes the MF-LS300S Resettable Fuse a reliable and secure way to protect circuits from over-current damage.

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