1. Power supply circuit: There are various power sources for the power supply circuit, such as AC380V and 220V;

　　2. Protection circuit: The working power supply of the protection (auxiliary) circuit includes various types such as single-phase 220, 36V or DC 220, 24V, etc., which provide various protections for electrical RF splitter equipment and lines such as short circuit, overload, and voltage loss. It is composed of protection components such as fuses, thermal relays, voltage loss coils, rectification components, and voltage stabilization components;

　　3. Signal circuit: a circuit that can timely reflect or display information about the normal and abnormal working status of equipment and circuits, such as signal lights of different colors, audio equipment with different sounds, etc;

　　4. Automatic and manual circuits: In order to improve work efficiency, electrical RF splitter equipment generally has an automatic circuit. However, in installation, commissioning, and emergency response, a manual circuit needs to be set up in the control circuit to achieve the conversion between automatic and manual modes through combination switches or transfer switches;

　　5. Braking and parking circuit: a control link that cuts off the power supply of the circuit and takes certain braking measures to quickly stop the motor, such as energy consumption braking, reverse power supply braking, reverse pull braking, and regenerative braking;

　　6. Self locking and locking in the same way: After the start button is released, the circuit remains energized, and the electrical RF splitter device can continue to work. The electrical RF splitter link is called the self-locking link, such as the dynamic contact of the contactor connected in series in the coil circuit. Two or more electrical RF splitter devices and components, in order to ensure the safe and reliable operation of the equipment, can only be powered on to start one, and the other cannot be powered on to start the protection link, which is called a locking link. The dynamic breaking contacts of two contactors are connected in series in each other's coil circuit.

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