What is contactor and how it works?
What is contactor and how it works?
A contactor is an electrical device which is used for switching an electrical circuit on or off. These contacts are in most cases normally open and provide operating power to the load when the contactor coil is energized. Contactors are most commonly used for controlling electric motors.
What is IEC magnetic contactor?
Nonreversing IEC Magnetic Contactor, Coil Volts: 120VAC These electrically controlled switches are designed for switching a power circuit. Featuring an energy-efficient design, the contactors allow easy assembly of components to form motor starters. The modular design includes screw terminals and plug-in accessories.
Why contactors are used?
A contactor is an electrically-controlled switch used for switching an electrical power circuit. Unlike relays, contactors are designed with features to control and suppress the arc produced when interrupting heavy motor currents. Contactors come in many forms with varying capacities and features.
How many terminals does a contactor have?
On the front of the contactor, you’ll see two wire terminals of A1 and A2. This is where we can connect a 24-volt DC power to the coil to energize it. The A1 wire terminal is where the 24-volt DC positive signal wire gets connected and the A2 wire terminal is where the 24-volt DC negative signal wire gets connected.
How much current does a contactor coil draw?
what is the draw on the coil? Answer: The Actual, Factual, and measured Coil current at 110VAC is . 04 amps or about 4 watts.
What is the difference between a motor starter and a contactor?
A contactor is really just an overgrown relay. The contactor applies voltage to a contactor coil to close the contacts and to supply and interrupt power to the circuit. A motor starter is simply a contactor PLUS an overload relay and is rated by motor HP or amperage.
When the contactor coil is de energized?
De-energizing the coil causes it to de-magnetize, releasing the armature and enabling a return spring inside the contactor to snap all three contacts to the open (off) position.
