What are the Main Parameters of PPTC Self-Recovery Fuses? Usage Precautions?

**Main Parameters:**

1. Rated Current: The maximum current of the PPTC self-resetting fuse. Exceeding this current will trigger self-resetting protection.
2. Trigger Current: The minimum current value at which the PPTC self-resetting fuse activates its self-resetting protection.
3. Rated Voltage: The maximum operating voltage of the PPTC self-resetting fuse.
4. Maximum Voltage: The highest voltage the PPTC self-resetting fuse can withstand. Exceeding this voltage may cause the fuse to fail.

**Usage Precautions:**

1. Select a PPTC self-resetting fuse with a rated current, rated voltage, and trigger current suitable for the actual application.
2. Avoid excessive current flow in the circuit to prevent the PPTC self-resetting fuse from failing.
3. Ensure the PPTC self-resetting fuse operates under normal conditions, such as preventing excessive temperature or humid environments.
4. Pay attention to the installation sealing of the PPTC self-resetting fuse to protect it from external factors like moisture.
5. If the PPTC self-resetting fuse activates its self-resetting protection, promptly inspect the circuit to identify the cause of the fault and take appropriate measures.