Relays

FAQ About Relay Electronic Components

Planning to buy electrical relays, here are the most common questions that people tend to ask about relay electronic components.

What is relay electronic component?

It is a relay which can be used for relaying a control signal from one circuit to another.

What relays do?

A relay is an electromagnetic switch. It works on the principle of mutual induction or magnetic coupled between two coils, one coil is called ‘control’ and another is called ‘load’. The control coil has small current flowing through it, the load coil may have larger current that flows through it.

When you apply voltage to the control coil, it magnetizes its core and induces voltage across the relay’s contacts.

When you remove the voltage from control coil (switch off), current flowing through load coil causes current to flow through load circuit.

What is the working principle of relay?

There are mainly three types of relays:

– mechanical relays

– reed relays

– solid state relays

Mechanical relays consist of a switch and an electromagnetic coil. When you apply voltage to the relay’s coil, it closes the switch which is connected in parallel with the load circuit. When you remove the voltage, it opens the switch which is connected to load circuit. Mechanical relays have cheap cost but they have slow operating speed and big size.

Reed relays work on principle of reed switches that are sealed in a glass envelope together with a magnetic coil. When you apply voltage across relay’s contacts, it closes its contacts which are connected to load circuit. When you remove the voltage, it opens its contacts which are connected to load circuit. Reed relays have low cost and fast operating speed but they have big size.

Solid state relays consist of semiconductor diodes or transistors that has access to load power source through an electronic switch. It has digital interface which is easy to use with computers, microprocessors or other control circuits. As semiconductor devices are small in size, solid state relays have very low cost and compact size.

How relays are different from push button switches?

A switch is just a physical contact between two conductors that opens or closes the circuit, whereas relays are electromechanical devices that uses an electro-magnetic coil to do switching.

How relays are used?

They are widely used in control system applications like industrial controls, power monitoring systems etc. Relays help to control heavy currents and voltages which otherwise may cause damage due to excess current or voltage levels.

What relays specifications should be taken into account?

Some of the most common relay specs are: continuous current, inductance and resistance. Apart from these, physical size and type of relay is also important for selection purpose.

Why relays require proper protection circuits?

Relays usually help to control heavy currents and voltage which otherwise may cause damage due to excess current or voltage levels. A relay can fail if it is not protected against excessive current or voltages, so it requires relays protection circuits before usage.

How relays are classified on the basis of their relays type?

There are mainly two types of relays: electromechanical relays and solid state relays. The electromechanical relays are further divided into relay types like reed relays, transfer relays, power relays etc.

How much do relays cost?

They are available at different price ranges depending on their application and type of relay used.

What is the main difference between reed relays and solid relays?

Reed relays (magnetic relays) use magnetic coupling whereas solid relays (sensor relays / power relays / electronic relays) can be used as an active switch which is controlled by a variety of different sources. Solid relays do not contain moving electromechanical parts, they are considered more reliable.

What relays to choose for AC and DC relays?

You can use relays like reed relays or solid state relays for both AC and DC relays. Reed relays (magnetic relays) are useful when you need a relay with high inductance for switching heavy currents, whereas solid state relays offer long life and relays protection circuits in relays.

What relays to choose for low voltage and high voltage relays?

You can use reed relays or solid state relays for both low voltage and high voltage relays. Reed relays (magnetic relays) are useful when you need a relay with high inductance for switching heavy currents, whereas solid state relays offer long life and relays protection circuits in relays.

What are solid state relays?

Solid relays (sensor relays / power relays / electronic relays) can be used as an active switch which is controlled by a variety of different sources. Solid relays do not contain moving electromechanical parts, they are considered more reliable.

What relays protection circuits to use?

Solid state relays require relays protection circuits before usage and they can be used with relays like G4SJX, 3CX or relays protection circuit.

What relays specifications to choose?

Some of the most common relay specs are: continuous current, inductance and resistance. Apart from these, physical size and type of relay is also important for selection purpose.

What are advantages / benefits that can be achieved by using ICRFQ.com Relay?

ICRFQ Relay works better than some other standard relays options available in market due to relays specifications they offer, relays protection circuits and relays type.

Where can relays be used?

Relays are used in various applications such as relays industry, relays precision equipment, relays for automations, relays applications, relays home appliance and relays high power.

How the prices of electronic relay differ from that of a mechanical relay?

Electronic Relay is more expensive than any other standard mechanical reed relay options available in market due to enhanced features and relays type specification it offer.

What are some of the most common relay specifications you need to consider when buying a reed relay?

Some of the most important parameters that are required in selection process for reed relays are given below:

1) continuous current

2) inductance

3) Resistance

5) physical size.

6) type of relay used (reed or state).

7) relays type

8) relays protection circuits

9) relays manufacturer.

10) relays price.

What are time delay relays?

These relays are used in applications that need a specific amount of time delay to get an output. These relays are available in both reed relays and solid state relays options.

What relays specs influence relays price?

Relay quality and relays type specification works important for relays price. More the relays specifications, better will be relays performance.

How can we prevent relay damage due to surge current?

You can use various relays protection circuits like Reed Switches and Power supply circuit protection etc for this purpose.

How can we prevent relay damage due to transients?

You should install transient suppressors for this purpose which helps you improve life time of relays by offering them with over voltage protection at their input end.

What are relay module racks?

Relay rack is a storage system usually used in relays industry for relays and relays protection circuits where you can store modules vertically. These racks are made of relays materials like relays sheets, relays composites / relays sheet / relays boards.

What are soft starter relays?

These are soft start relay with help of which you can reduce inrush currents during starting of an electrical motor. These relays can be operated even with low input voltage.

What are some of the accessories for the relays?

Some common relays accessories are relays connectors, relays terminal covers, relays accessories / relays terminals / relays caps etc. These accessories are used for relays installation, relays wiring and relays protection.

What are analog relay modules?

Analog relays modules are basically relays protection circuits that work for any type of relays applications to protect relays from voltage failure, over current and short circuit.

What is the maximum relays load a relay can take?

Usually, relays has an input power limitations with in which it works properly. So you need to be careful about relays power input when working with relays.

What is the life time of relays?

The relays life depends upon a number of factors like relays load, relays application, relays environment and relays quality. For more detail you should contact with your local Hoffman relay dealers.

Is it possible to damage relays due to breaker tripping?

Yes, if relays are connected in the circuit with higher current relays will get damaged. So users should be aware of relays specifications when using them in their application.

What is relay addressability?

Addressability basically means relays compatibility with various network protocols like IP (internet protocol), Modbus, Profibus etc.

What relays are used for control relays?

Control relays are basically relays that are used for controlling industrial equipments like relays contactors, relays starters etc. These relays are mostly solid state relays or reed relays.

What relays are used for industrial relays?

Industrial relays are basically relays that are used in relay industry applications such as relays wiring, relays protection etc. These relays can also be customized according to user requirements and specifications.

Where relays are manufactured?

There are different relays manufacturers located all around the globe who offer various types of relays such as reed relays, solid state relays etc. depending upon relays type and relays specifications required.

Choose a reliable relays manufacturer to get relays with good relays quality.

ICRFQ.com – Electronic relays Supplier

You can easily place your orders for electronic relays at ICRFQ.com . We have a variety of relays available for various relays applications. We offer relays warranty also with relays shipment to all our relays customers.

For any relays inquiry / relays requirements or details send your requirement at [email protected] . You can also contact us through live chat option available on the website. Feel free to call us.

You can also post your relays related queries and specifications at ICRFQ.com to get quick relays solutions from our reliable suppliers.