Is the pressure switch of the motor controlled by the contactor requiring a separate power supply?
AC contactor control voltage has a variety of, 380V, 220V, 36V, 24V, according to the conditions and needs to choose.
Pressure switch does not require power, but the pressure switch as a control device, generally through its switch control contactor coil power supply, break to work, indirect control of the motor running and stopped.
The control circuit is preferably low-voltage, so safe.
However, the home, 220V do not know you mean the motor circuit, or contactor circuit. If the control side of the circuit, 220V is also not a bad idea, but as far as I know, there is no controller operating voltage is so high. The The You must not control it automatically. Then the contactor into a knife switch and the like can be used on the main circuit.
If you are referring to the motor circuit, the control side of the circuit is best for low voltage. Ha ha
Yes, the pressure switch through the contactor control motor requires a separate power supply, the circuit breaker has an arc extinguishing function, only the circuit breaker can be in the case of short circuit arc off, the circuit breaker can be achieved through the optional release accessories short circuit protection Functional contactor is the control element, under normal circumstances the circuit breaker and the drawer is always closed, the motor start and stop by the control loop through the contactor to control the contactor does not have the arc function.
The contactor is divided into AC contactor (voltage AC) and DC contactor (voltage DC), which applies to power, power distribution and electricity. Contactor in the broad sense refers to the use of electric current in the coil to generate a magnetic field, the contact closed to achieve the control of the load of electrical appliances.
