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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.

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16y ago
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13y ago

a 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

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15y ago

explain 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.

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11y ago

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Q: How do electrical contactors work?
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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.


What is the difference between contactor transformer?

Relays and Contactors are electromagnetic switches. The onlydifference is that relays are usually used for low voltageapplications while contactors are used for higher voltageapplication. Contactors usually have Overload protection.Some examples that I can give (at least in Manufacturing ofIndustrial Control panels):-Relays are use as electromagnetic switches to controlcertain parts of a circuit (low voltage application). Abetter example would be such as if you want your circuit tosound a horn when a certain abnormality is happening at acertain period of time, then depending how you set up yourcircuit, a specific relay will either open or close and youhorn will start making the sound.-Contactors can be used for example, to start motors or anumber of motors that require a higher voltage in order forthe motor or motors start working. In the example that Ijust gave, contactors work as starters.


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.

Related questions

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..


What is membrane contactors?

Membrane contactors are devices that combine membrane separation technology with gas-liquid contactors, allowing for efficient mass transfer between two phases without direct mixing. They are commonly used in various industrial processes such as gas absorption, liquid-liquid extraction, and gas stripping. Membrane contactors offer advantages such as high selectivity, reduced energy consumption, and compact design.


How does contactors works?

Coil energized contacts close.