What is the difference between intermediate relay DC and AC?
DC is the DC power supply, AC is AC power; intermediate relay coil power is different, the standard DC is DC, the standard AC is the exchange.
Electricity is divided into direct current and alternating current, DC refers to direct current, AC refers to the alternating current. DC is usually 24V, AC is usually 220V, the working principle is the same, that is, the type of voltage is not the same.
Intermediate relay: used in relay protection and automatic control system to increase the number and capacity of contacts. It is used to pass the intermediate signal in the control circuit. The structure and principle of the intermediate relay are basically the same as those of the AC contactor. The main difference from the contactor is that the main contact of the contactor can pass through the high current and the contact of the intermediate relay can only pass through the small current. Therefore, it can only be used in the control circuit. It is generally no main contact, because the overload capacity is relatively small. So it is all with auxiliary contacts, the number of more. The new national standard for the definition of intermediate relay is K, the old national standard is KA. Usually DC power supply. A few use AC power.
Electricity is divided into direct current and alternating current, DC refers to direct current, AC refers to the alternating current. DC is usually 24V, AC is usually 220V, the working principle is the same, that is, the type of voltage is not the same
