Widely used in simple electric systems, a single pole contactor for air conditioner is an essential part of any unit. It establishes a smooth flow of electricity through the network and ensures safety. PartzStop provides a comprehensive range of contactors from the leading manufacturers.
What Is A1 pole Contactor?
This is a single pole contactor with a 24 volt coil (or some other voltage) that’s used for turning a device on and off. To put it simply, A1 and A2 are phases for switching a network on and off. A1 is a zero terminal that’s connected to the corresponding elements along with the line. The user has to control voltage manually for these contacts to disconnect and connect. These contacts always come in couples.
How to test 1 pole Contactor?
The process of testing is divided into several simple steps:
- Remove electric power that comes to the line side. Remove wires from the side screws. Identify the lines somehow (with a tape or written marks).
- Take leads from the terminal and don’t forget to identify these wires, as well. If you leave wires on the contactor, you might get false readings.
- Charge the coil by switching the control to ON. You should hear the noise from the contactor. There also might be a light indicator.
- Use a volt ohmmeter: connect the red wire to the ohm connector and the black wire – to the ‘common’. The reading should be 0 ohm. Test each of the pair contacts.
- If in some pair, the reading is not 0, there might be wrong connection. You should hear a ‘click’ when you charge the voltage.
- Remove the wires to the coil with a screwdriver and test them with the meter – it should display 10-100 ohms. If readings are not in this range, replace the coil.
PartzStop guarantees an optimal single pole contactor price and high quality. Check our catalog and contact the support team to receive professional guidance.