0
A contactor is an electrically controlled switch (relay) used for switching a power circuit. an electro pneumatic contactor is similar to the above except it uses a pneumatic signal to initiate the switching of the electric power circuit. an electro magnetic contactor is a contactor driven by an electric control signal. It us usually just called a contactor.
Wiki User
∙ 16y ago
Wiki User
∙ 12y agoa contactor works in the sae principle as a motor THE SIMPLE INDUCTION LAW this law is when you twist an isolated wire (a simple wire inwhich every where can be found) around a nail or any other metal and contact the wire ends to a supply (battery or a low voltage sac source like a transformer's) the nail works like a magnet the more twisted rounds of wire a better magnet also the more current.
a transformer,an indctor,a motor,a relay or maybe some other things yous this principle.
a contactor uses supply power to produce to magnets and what magnets do is pulling the other magnet this force two metal contacts to catch each other and the electrical current will flow.
the contactor is made of a coil some metal contacts and a base which I forget the English name and a body.each of these parts have their special equations to be manufactured.
for more information you are allowed to contact me on:sewmhr@Yahoo.co.UK
Wiki User
∙ 14y agoexplain me about the contactor works with examples. if i want to control a motor with contactor. and how i can use contactor in loops with over load and circuit breakers.
Wiki User
∙ 11y agok
Add your answer:
Earn +20 pts
What size of contactors used for 20hp star-delta starter?
The size of the contactors are dependant upon what the voltage the motor is operating on.
How many contactors using in star connection of motor?
two contecter <<>> There are three contactors used in a Star Delta configuration.
How does contactors works?
Coil energized contacts close.
How the museum electrical system would work if an electrical blackout happen?
Back up generators
Can silver be used to make electrical wires?
Silver is used as a low resistance conductive material. Contactors and relays contact points are made of copper and are silver plated to obtain the lowest resistance between the moving contact faces.
What tool store sells contactors in Miami?
One can find contactors in various Miami hardware stores. Home Depot, Bond Supply, and Harbour Freight Tools each carry various electrical contactors which one can purchase.
What is hinky pinky for a triple set of electrical contactors?
That would be: Three-phase relays
What is subcontract?
A main building contractor will be contracted to build a house or houses. The main building contractor may then contract all the electrical work to an outside electrical company. The electrical company becomes a sub-contractor. There can be several sub-contactors on the building site.
What is electrical maintenance?
Electrical maintenance is used for maintenance of electrical equipment. Electrical Preventive Maintenance is been used for replacement of Low voltage distribution products such as ACB's & MCCB's Contactors and Relays.
What Autoclave parts and function?
CHAMBER JACKET STEAM GENERATOR STEAM TRAP VALVES ELECTRICAL COMPONENTS CONTACTORS HEATERS
What is the Difference between auxiliary contactor and power contactors?
Power contactors are used primarily for more sophisticated equipment that need several different points of contact. Auxiliary contactors are primarily for single connections.
What size of contactors used for 20hp star-delta starter?
The size of the contactors are dependant upon what the voltage the motor is operating on.
How many contactors using in star connection of motor?
two contecter <<>> There are three contactors used in a Star Delta configuration.
What are the main Components of control panel?
some of the main components in the control panel are single phase preventers,contactors-are of two types they are power contactors and control contactors,relays, overload relays,transformers for the equipment and for cooling purpose,etc
What are the is electrical relays and its principals and operation?
An electrical relay uses a low voltage, low current signal to control an electromagnet. When current passes through the electromagnet, it attracts the spring loaded arm with contactors, which will touch some stationary contactors, closing a circuit on a higher voltage/high current circuit. An example of this is when your thermostat 'tells' the air conditioner to turn on. The voltage & current from the thermostat are low, while the voltage & current necessary to run the air conditioner's compressor are high..
How does contactors works?
Coil energized contacts close.
How does a contactor energise?
Contactors have movable contacts in them which are operated by the action of the solenoid that they are attached too. This solenoid is basically an electromagnet with a spring that resets the contacts to the open position when current is removed from the solenoid's coil/windings. When an electrical current is fed through the coil of the solenoid it creates a magnetic field; the force of the field is stronger than the opposing force of the restting spring thus the moving part of the solenoid which has the contacts attached to it, moves down completing the electrical circuit. Contactors are usually used in cases where the voltages and currents levels to be used are way beyond the capacity of a normal switch. A common example would be as a direct on line starter for a large electrical motor, which usually have large starting current of up to 5-8 times the run current of the motor. It is also important to note that voltage used to energize the contactors coil can be much smaller than the actual voltage be conveyed by the contacts which feed the electrical load.
