Question

What voltage rating(s) is/are found on relay or contactor coils?

a) AC and DC
b) DC only
c) AC only
d) Variable voltage

Answer 1

Relay or contactor coils can have voltage ratings of AC, DC, or variable voltage, allowing them to be compatible with different power supplies.

Step-by-step explanation:

The voltage rating on relay or contactor coils can be either AC or DC. This means that these coils can be designed to operate with either alternating current (AC) or direct current (DC).

For example, a relay or contactor coil may have a voltage rating of 12V DC, indicating that it is designed to be used with a direct current power supply of 12 volts. Another coil may have a voltage rating of 120V AC, indicating that it is designed to be used with an alternating current power supply of 120 volts.

Additionally, there are relay or contactor coils that are designed for variable voltage. These coils can operate with a range of voltages, allowing for flexible usage in various applications.