What happens when the coil of a contactor is energized?

Operating Principle of a Contactor: The energized electromagnet then creates a magnetic field. This causes the core of the contactor to move the armature. The circuit is then completed between the fixed and moving contacts by a normally closed (NC) contact allowing the current to pass through the contacts to the load.

What type of voltage is used to energize the coil on the contactor?

24 volts
In residential applications, a voltage of 24 volts is used to energize or turn on the contactor. In commercial applications, 120 volts or 24o volts can also be used to energize the contactor.

What is the negative effect of operating a contactor coil above or below its rated voltage?

Identify the negative effects of operating a contactor coil above or below its rated voltage. (Check all that apply.) High voltage increases the speed of the electromagnet at closing. Low voltage decreases the speed of the electromagnet at closing.

How does a 220 volt contactor work?

Operating Principle of a Contactor:The current passing through the contactor excites the electromagnet. The excited electromagnet produces a magnetic field, causing the contactor core to move the armature. A normally closed (NC) contact completes the circuit between the fixed contacts and the moving contacts.

How many amps does a contactor coil draw?

The Coil does not draw . 5 amps or 55 watts.

What causes contactor coil to burn out?

Reason for coil burns: Coil may burn when the voltage applied to the contactor coil ends is lower or higher than normal. In addition, dust and foreign bodies in the air gap facilitate this. To prevent coil burning, the coil must be fed at the voltage and current values specified in the catalog.

What Should the resistance be on a contactor coil?

The meter should read from 10 to 100 ohms. If the meter does not, the coil is bad and must be replaced.

How many amps does a 120v contactor coil draw?

5 amps or 55 watts. Alan M.