Industrial contactors are devices that are essential to the reliable switching of heavy loads; how demanding your job application is, industrial contactors can take the load. Industrial contactors are a vital element in electromagnets, rapid dividing switches, relay-controlled switches, magnetic routing, and others, and is extensively used in factories, power generation stations and heavy industry applications. The right contactor selection for various heavy duty or high power applications can mean the difference between machine life or destruction, and user safety or injury.
What are Industrial Contactors?
Industrial contactors are switches operated by another electrical circuit (electrically operated switch). The major application of contactors is for control of heavy currents used in motor switching. It is that lay operating or switching of contacts opening and closing. Contactors are used for lighting circuits, motors, heating installations, etc. for industrial use, they are of course being used for large appliances like mixers and compressor, etc. Contactors kind jt only from electrical points of use, but also mechanically in various arrangements. All kinds of contactors are available at this time: from motors to multipole, and various others, to be used in manual as well as rapid operating types. Contactors of course are used for bigheavy duty jobs leading to frequently and suddenly altering power being applied.
Heavy Duty Requirements of Industrial Contactors
Heavy duty industrial contactors must all of course be supplied with means to take high power.Most heavy duty contactors for the larger jobs are the through type unless there are machines for which more elaborate switching properties are required for the heavy currents, varying from 250 A, 500 A and so on to even larger currents. Use, of course, is strict for heavy duty work. The use of the proper contouring contacts controls prevent burning of contact causing trouble in service. Properly contouring contacts leads to other nasty properties which it is advisable to avoid.
Durability: Heavy duty calls for a contactor that will be able to work continuously without getting out of order. They are constructed from materials that does not suffer so much abrasion, withstanding nevertheless such things as the heat, dust and moisture occurring in some positions.
Arc Suppression: When the circuit being opened or closed is drawing a high voltage, an arc also of that voltage plays between the contact points, and as it is of very high voltage the contactor is damaged by it. Heavy duty contactors are designed to prevent such damage, either protecting the contact points by surround arc chambers which absorb the ‘kick’ of the destructive arc, or putting some special property in the contact points to deaden the ‘sudden panic’ of the arc.
Overload Protection: With any powerful contactor application, the contactor itself had better be protected against overload for the further protection of the rest of the system. How otherwise would the machines themselves, and before long to say nothing of their production machinery, get burnt up and a total loss because of the sudden increase in amperage? That is why it is commonly desired to particularly guard heavy duty first contactor from this consequence only, to save expensive losses in time lost of industrial machines, some other expensive gear.
Remote Control Capabilities: Larger industrial contactor units are meant to work to family sets permitting of remote control.This is useful both in machinery where it would otherwise be inconvenient to go to the site of and for control applications such as automation and remote diagnostics.
Applications of Heavy Duty Contactors
Motor Control: A very common application for industrial contactors is in motor control. be it conveyor system, pump, or large fan, industrial motors need a contactor to safely turn the motor on and off. Heavy duty contactors lend themselves well to high powered motors for use in automotive, mining, factory, etc. Heavy Victorian: Industrial Contactors
HVAC: In industrial heating and cooling systems and space conditioning contactors are used to turn large compressors, fans on and off as required. These systems depend upon the reliability of contactors to operate in a safe and conif60modating manner.
Power plants; power generation: The electrical power business relies on contactors for safe distribution of the power it deals its energy in enormous numbers of volts and amps. Heavy duty contactors are essential for and protect critical components of the plant.
Renewable energy: As the “sun and wind” business increasingly becomes the energy supply, heavy duty contactors will be needed to distribute the power generated. The contactor here distributes the power from the “solar farm”, or the big windmill, “distributing” to the grid or to a convenoir battery arcade.
Construction and mining machinery: Large industrial engines or motors, running in rough and harmful environments, are often switched into and out of service by a contactor.
Choosing the right industrial contactor
The first step in choosing contactors for heavy duty applications is to consider the Voltage and Current Ratings to spalin. Used in up to 30,000 amp. plants, they will have to have voltage and current ratings material laden at least in excess of the maximums to be considered safe for the job. Next, what will the “alternative” environment be like? The temperatures will be prech, but what will its humidity and exposure to corrosive vapors be? Next there is coil voltage – another consideration here in that the gate will draw a large high amp sweep what – and to what voltage, if any, will this be controlled? Finally, nearly all the major contactor manufacturers have, by now, a “combination” contactor- too possibly – taking its place in certain application of the “size” selection criterior: space – if it in any way takes away space from an already crowded panel688.737.740.77, or box, making the contact rating and duty selection the length of the squeeze lead in. Do you need the combination and possibly even larger, or not?