220V Relay

Your Professional 12V High Power Relay Supplier

Zhejiang Qianji Relay Co., Ltd was established in 2000 and has more than 23 years experience of relay industry. The company is a modern and professional enterprise researching, developing, producing, and selling relays.

Why Choose Us

01/

Wide Product Range
The company specializes in the production of more than 100 series and 2,000 specifications of various small relays, high-power relays, imported relays, automotive relays, time relays, magnetic latching relays, solid-state relays, counters, temperature controllers, relay sockets, switches, etc.

02/

Wide Range of Applications
Our relay products are mainly used in power systems, industrial automation, transportation, medical equipment, household appliances, and other fields.

03/

Quality Assurance
We have passed ISO9001 international quality system certification, and our products have passed non-toxic and environmentally friendly tests; some products have obtained American UL, German TUV certification, CE certification, and CQC certification.

04/

Broad Market
There are dealers all over the country and our products are exported to the Middle East, South America, Southeast Asia, Taiwan, South Korea, Australia, Europe, the United States, and other countries and regions.

220V Contact Type Relay
220V contact relay. Equipped with LED. Action indicator light with excellent contact switching ability for better circuit protection. Multiple ways to lead out feet.
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AC 220V Transparent Relay
AC 220V transparent relay has various contact structures. Micro relay 5A 7A search relay. Superior performance and compliance with international standards.
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220V Transparent Relay
220V transparent universal relay, intermediate relay factory manufactured starter, large power relay, with various external structures, grounding type high-power relay, QIANJI high-power relay has...
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Relay 220V10A Relay
The 220V 10A relay is a compact, reliable electrical component with a number of switch applications. This makes it highly suitable in the control of household appliances, automation systems
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220V AC Transparent Relay
The 220V AC transparent relay is a relay with an AC coil. Standard PC board terminal. The block structure of the coil is sealed during formation, providing a high breakdown voltage of 1500V...
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10A220V AC Relay
Transparent AC220V relay, relay switch AC220V relay 5-pin 16A DC coil automatic universal relay PCB installation power relay 12V relay.
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220V10A Relay 11 Pin
220V10A relay with 11 pins, this relay has LED, test button and 2Z, 4Z contact form. With various terminal types, gold-plated contact types, transparent dust covers, and various installation...
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220V10A Relay
QIANJI Enterprise, LY2 series plug-in installation non locking relays have a DPDT contact configuration. It is driven by a 12VDC coil voltage and a 10A switching current. This power switch compact...
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AC 220V Relay 4 Pins
The AC 220V relay has a 10 ampere 4-pin contact switching capability. Starter relay. Equipped with matching socket installation, electrical control up to 10W times, circular wiring duct.
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Definition of 220V Relay

A 220v relay is an electromagnetic switch or device which can be used to control electrical circuits. It works by opening and closing power supply lines in order to optimize the flow of current within a circuit. Along with controlling applications, it has other benefits such as providing protection from overcurrents due to short circuits, helping direct energy more efficiently throughout systems, and allowing for remote operation through automation processes. The 220v relay is generally used as an intermediate conversion between high-power or high-voltage and manual operation devices, to achieve the personal safety of operators or meet the requirements of high-power loads on the current and voltage of the control circuit.

How Does a 220V Relay Work

A 220V relay is an electrical device which helps to complete the circuit and thus controls a large amount of electricity with low power. It operates on simple principles: when current passes through it, its magnet coil gets energized generating magnetic field which moves armature within the enclosed space that can be operated manually or automatically by applying voltage across two contacts points - normally closed (NC) & normally open (NO). The switching operation on the other side of the device is controlled by the signal received from one side of the device. A relay is a switch that electromechanically controls (opens and closes) circuits. This device's primary function is to establish or break contact with the help of a signal without the need for human intervention to turn it ON or OFF. It is mostly utilised to employ a low-power signal to operate a high-powered circuit. Typically, a DC signal is utilised to operate a circuit that is powered by high voltage, such as when using microcontrollers to operate AC home appliances.

Advantages of 220V Relay

Simple Operation
220V relays aren't challenging to operate and use a primary operation mechanism. Generally, relays pass a current through a coil adjacent to a primary circuit's switch or internal lever to generate an electric magnetic field. They usually don't demand excessive electricity or a more complex procedure, but switching them on sets them at a pace. Standard relays' primary function is usually to operate internal switches or levers, which is pretty straightforward to the operators.

Low-Cost Components
220V relays would hardly make you break the bank finding them and are convenient for tinier budgets. These minute circuit integrations consist of low-cost components and cheap assembling. That makes them ideal additions to most electrical circuits.

Long Last
220V relays don't require regular replacing since they are durable and can last over 1.5 million cycles. However, you must always ensure you use the correct type of relay in the circuits to prevent spoilage. Since numerous relays exist, choosing the fitting one is often confusing. However, if you aren't well-versed with these miniature devices, help from a professional can come in handy to enable you to use the correct and fitting relays in a circuit to last for long.

They Don't Require Maintenance
220V relays don't need maintenance, but you must ascertain their fitness in an electrical circuit. Usually, relays that fit into a circuit operate without problems, and you may not have to touch them for repairs even long after putting them in place. These devices hardly require you to maintain them, given their tiny size and simple operation mechanism.

Easy to Install
Installing 220V relays in an electrical circuit is always a breeze since they don't require to fit in complex parts. Usually, you only have to mount them onto a din rail without disconnecting the wires. You can also use them immediately without needing any assurance checks since they don't use too much current. Most relay manufacturers prepare them, ensuring they're ready to install and use. And if you're getting one, don't worry about getting yourself a technician.

They Can Control Several Switching Applications
220V relays are a jack of all trades and don't limit their operations to a single switching application. Instead, they can be handy for up to four switching applications simultaneously. That helps save on space and time, making them a valuable addition to circuits.

Types of 220V Relay

220V Contact Type Relay

A 220V Contact Type Relay is an electrical switch operated by an electromagnet. It typically handles a voltage of 220 volts and is used to control the flow of electric current in various applications, such as industrial machinery or home automation systems.

AC 220V Relay

An AC 220V relay is an electrical relay specifically designed to operate with alternating current (AC) at a voltage of 220 volts. This type of relay uses an electromagnet to control the switch contacts and is commonly used in many applications, including power control, motor control, and automation systems. AC 220V relays are available in different forms such as plug-in relays, panel mount relays, or PCB mount relays, and they play a critical role in controlling and protecting electrical circuits.

220V Transparent Relay

Relays with transparent casings provide a visual indication of the internal components and their operation. These relays are designed to allow users to observe the relay's switch contacts, electromagnet, and other internal mechanisms. The transparency enables easy inspection of the relay's operation, especially useful in troubleshooting and testing scenarios. It's important to note that the voltage rating of the relay (220V, in this case) refers to the maximum voltage it can handle, and does not directly relate to the transparency of the casing.

220V10A Relay

A 220V 10A relay is an electrical switching device capable of handling a voltage of 220 volts and a maximum current of 10 amps. This type of relay is commonly used in various applications, including power control, automation systems, and home appliances. The relay consists of an electromagnet that, when energized, closes or opens its switch contacts. The 220V rating indicates the maximum operating voltage the relay can handle. The 10A rating specifies its maximum current-carrying capacity, indicating that the relay can handle up to 10 amps of current without any issues. It's important to select a relay that meets the voltage and current requirements of your specific application to ensure safe and reliable operation. Additionally, relays of different contact configurations (such as Normally Open or Normally Closed) are available to suit different control requirements.

Applications of 220V Relay

Industrial Automation
Relay modules are widely used in industrial control systems for automating various processes. They can control motors, solenoids, valves, and other devices in manufacturing environments.

Power Distribution
220V relays play a crucial role in power distribution systems. They facilitate the switching of electricity between different sources or loads, allowing efficient power management and protecting sensitive equipment.

Home Automation
220V relay are used in home automation systems to control lighting, HVAC systems, security systems, and other appliances. They provide a means to remotely or automatically control different aspects of a smart home.

HVAC Systems
Heating, ventilation, and air conditioning (HVAC) systems use relays to control the operation of fans, blowers, compressors, and other components. 220V relays enable efficient and reliable control of these systems.

Motor Control
Relays are commonly employed in motor control applications. They can start, stop, or reverse the direction of motors based on input signals, providing control and protection to the motors.

Automotive Applications
In automotive systems, relays are utilized for controlling lights, wipers, window motors, and other electrical components. They help manage high current levels in automotive circuits.

Energy Management
Relays are used in energy management systems to control the flow of electricity from renewable energy sources, storage systems, and the grid. They enable effective energy utilization and distribution.

Safety Systems
220V relays are an integral part of safety systems, such as emergency shutdown systems and fire alarm systems. They are used to activate alarms, trigger shutdowns, or control emergency equipment.

Components of 220V Relay

Mechanically Movable Contacts
Contacts are the most important part of Relay that are mechanically movable and affect the reliability. The good contacts should have minimum contact resistance.
Generally, two more contacts are available, also called Switching Points to connect high Amp-Load. Another contact called Common Contact is present to connect Switching Points. These Contacts are named as Normally Open (NO), Normally Close (NC), and Common (COM) Contacts.
The selection of contact material depends upon several factors like nature of the current to be interrupted, the magnitude of the current to be interrupted, Frequency and voltage of operation.

Electromagnets and Electromechanical Design
Electromagnets are constructed by wounding copper coils on a soft iron core. The two ends of the coil are connected to two pins of the relay and the coil current is restricted to 5A at 220V.
On the other hand, Electromechanical design includes the design of a Magnetic circuit and the mechanical attachment of the Core, Yoke, and Armature. The reluctance of the magnetic path is kept minimum to make the circuit more efficient.

Spring and Bearings
Spring is connected to one end of the armature and pushes the armature back into place if no current passes through the coil.
The assembly of an armature with the magnet and the base is made with the help of spring. The spring is insulated from the armature by a molded block to provide dimensional stability. The fixed contacts are usually welded at the terminal link.
The bearing may be a single ball, multi-ball, pivot-ball, and jewel bearing. The single ball bearing is used for high sensitivity and low friction. Whereas, multi-ball bearings provide low friction and greater resistance to shock.

Terminals and Housing

Control Input or Coil Terminal: There are two Control input terminals in the Relay that control its switching mechanism. A low-power source is connected to these terminals to activate and deactivate the relay. The source can be AC or DC depending on the type of Relay.
Common Terminal (COM): COM refers to the common Terminal of relay. This is the output terminal of the relay where the load is connected. This terminal is internally connected with either NO or NC depending on the state of the relay.
Normally Open (NO): NO is also a load terminal that remains open when the relay is not active. NO terminal closed with the COM terminal when the relay gets activated.
Normally Close (NC): NC is another load terminal that remains closed with the COM terminal when there is no control input. When the relay gets activated, the NC terminal disconnects from COM and remains open until the relay is deactivated.
Poles and Throw: The number of Switches inside the relay is called the Poles of Relay. Whereas, The number of circuits being controlled per pole is known as the Throw of Relay. A single throw relay can control only one circuit i.e. either ON or OFF. While a double throw relay can control two circuits i.e. alternating from one circuit to another by opening one circuit and closing the other during the switching operation.

How to Test a 220V Relay

Preparing Your Relay

Do a Basic Visual Inspection of the Relay

Do a basic visual inspection of the relay. Many relays have a clear plastic shell containing the coil and contacts. Visible damage (melting, blackening, etc) will help narrow down the issue. Most modern relays have an LED to tell you if they are in the active state (ON). If that light is off and you've got control voltage to the relay or coil terminals (typically A1[line] and A2 [common]) then you can safely assume that relay is bad.

Disconnect the Power Source
Disconnect the power source. Any electrical work should be done with all power sources disconnected, including batteries and line voltage. Be especially mindful of capacitors in the circuit, as they can hold a charge for a considerable length of time after removing the power source. Do not short capacitor terminals to discharge. It is best to check your local laws before performing any electrical work, and if you feel unsafe, leave it to the professionals. Extra low voltage work typically will not fall under this requirement, but it's still important to be safe.

Consult the Relay Schematic or Data Sheet
Consult the relay schematic or data sheet. Relays have fairly standard pin configurations, but it is best to search for the data sheets to find out more about the number of pins from the manufacturer, if available. Typically, these will be printed on the relay. Information on current and voltage ratings, pin configurations, and other information is sometimes available in the datasheets will be invaluable in testing, and eliminate most errors associated with testing. Testing pins randomly without knowing the pin configuration is possible, but if the relay is damaged, results may be unpredictable.

Testing 220V Relays

Determine The Coil Requirements Of The Relay

Determine the coil requirements of the relay. The manufacturer's part number should be listed on the case of the relay. Look up the applicable data sheet and determine the voltage and current requirements of the control coil. This also may be printed on the case of larger relays.

Find out If the Control Coil is Diode Protected
Find out if the control coil is diode protected. A diode around the pole is often used to protect the logic circuitry from damage due to noise spikes. The diode will be shown on drawings as a triangle with a bar across one corner of the triangle. The bar will be connected to the input, or positive connection, of the control coil.

Assess the Contact Configuration of the Relay
Assess the contact configuration of the relay. This will also be available from the manufacturer's data sheet, or may be printed on the case of larger relays. Relays may have one or more poles, indicated in drawings by a single line switch connected to a pin of the relay.
Each pole may have a normally open (NO) and or normally closed (NC) contact. The drawings will indicate these contacts as connections with a pin on the relay.
The relay drawings will show each pole as either touching the pin, indicating a NC contact, or not touching the pin, indicating a NO contact.

Test the De-Energized Condition of the Relay Contacts
Test the de-energized condition of the relay contacts. Use a digital multimeter (DMM) to test the resistance between each pole of the relay and the corresponding NC and NO contacts for that pole. All NC contacts should read 0 ohms to the corresponding pole. All NO contacts should read infinite resistance to the corresponding pole.

Energize the Relay
Energize the relay. Use an independent voltage source appropriate for the rating of the relay coil. If the relay coil is diode protected, make sure that the independent voltage source is connected with the proper polarity. Listen for a click when the relay is energized.

Check the Energized Condition of the Relay Contacts
Check the energized condition of the relay contacts. Use a digital multimeter (DMM) to test the resistance between each pole of the relay and the corresponding NC and NO contacts for that pole. All NC contacts should read infinite resistance to the corresponding pole. All NO contacts should read 0 ohms to the corresponding pole.

Our Factory

The new factory covers an area of more than 8,000 square meters and a construction area of more than 15,000 square meters. With its absolute advantages in product quality and performance, the company has become a leader in the relay industry.

Common Problems of 220V Relay

Q: Why 220V Relay is important?

A: 220V Electrical Relays are essential and crucial because they help to control the high current loads by using a small amount of current. Relay applies voltage to the coil that causes low current flow through it. It allows a larger current to pass through the contacts and control the electrical load. Relays are essential for Applications where a low-power control signal needs to command high-power circuits.

Q: What are the Functions of a 220V Relay？

A: The main function of the relay is to control the high-voltage circuit with the help of a low-voltage DC signal. They control one electrical circuit by opening and closing contacts in another circuit. It detects undesirable conditions in the assigned area of the electrical circuit and gives command to the circuit breaker to disconnect the affected area. In this way, Relay protects the electrical system from damage. So It is also considered as protective equipment.

Q: What is the Construction of 220V Relay?

A: The 220V relay operates both electrically and mechanically. Also mainly, there are two kinds of Relay available: Electromechanical Relay and Solid State Relay. It consists of an electromagnet and a set of contacts that performs switching operation. The construction of relays is mainly grouped into four different parts named as: Mechanically movable Contacts, Electromagnets and Electromechanical Design, Springs and Bearings, and Terminals and Housing.

Q: What are the Electrical Characteristics of 220V Relays?

A: Rated Coil Voltage:
The basic electrical characteristics of a relay are the rated coil voltage. The voltage at which the relay is made operational is called the rated coil voltage. The input voltage to the relay is also known as the rated coil voltage. The rated coil voltage is set up by the manufacturer and the different relays have different rated coil voltages. The coil of a relay is sensitive when the voltage exceeds the limit, and the coil of the voltage is damaged.
Set Voltage:
The minimum voltage at which the switching operation is performed by the relay is known as the set voltage or operating voltage. The set voltage or the operating voltage of the relay is always less than the ideal coil voltage. The value for the set voltage is predefined by the manufacturer. Different relays have different set voltages.
Rated Power:
The maximum power that a relay can handle is known as the rated power. For example, if a normal operating voltage of a relay is 60W then the rated power for the relay is less than 60W. The power consumption of the coil is called the power rating of the coil and it should not be more than the rated power. The power of the relays is expressed in milli-amperes and ampere ratings.
Switching Capacity:
The maximum value of the current that the contacts of the relays can withstand is called the switching capacity. The switching capacity can also be defined as the capacity at which the switching operation is performed by the relay. The switching capacity is defined for the loads with resistive nature which are connected with the contacts of the relays. Different relays have different switching capacities.

Q: What are 220V relays made of?

A: The coil of a 220V relay is made from a coil of wire that is wrapped around a soft iron core. The contacts of a relay are made from iron which provides low reluctance for the magnetic flux. Relay bases are generally made from a form of plastic and the terminals for the connections are a metal material.

Q: Can 220V relays be repaired?

A: Some relays can be repaired yes, but it depends on what the fault is and where it has occurred in the relay.
If a relay has a mechanical failure such as a broken terminal or broken pin these types of failures can be repaired by a specialist.
If a relay is sticking it can be repaired by stripping apart the relays and cleaning up the internal contacts. Sticking relays are normally caused by the arcing of contacts after a long time in service/operation. If you can access the relay contacts then you should use some fine sand or emery paper to lightly rub down the contacts.
When a relay is damaged beyond repair you should simply look at replacing the complete relay. Relays for the majority of applications are low cost and they would not be cost-effective to repair anyway. Large or specialist relays may be able to be repaired a few times in their lifetime.
Always double-check the rating and specs of the relay that you are replacing. You should always use the exact relay that has been removed as they have been specifically designed for the circuit they are used in.
If you would like to check out the advantages and disadvantages of using relays then check out our article here.

Q: Why Do 220V Relays get hot?

A: 220V relays generate a certain amount of heat if their coils remain active for long periods of time. The current that runs through the coil produced heat energy. This is normally not an issue and the relay can perform as normal with it getting slightly warm. Relays are designed to cool down quickly when they are not in use.
If a relay gets too hot this can indicate an issue with the supply power source or the relay itself. A relay that gets too hot will typically burn out and ultimately fail.
Relays can fail for a number of different reasons but in most cases, they can be avoided. Check out our article here to learn more.

Q: Why do 220V relays click?

A: When a 220V relay clicks it is an indication of the contacts opening/closing when the coil is powered. Some relays make a louder clicking noise when they operate than others. It is generally nothing to worry about. Relays that make excessive clicking noise may indicate an issue with the control side of the circuit as they are being told to switch on and off at an unusual rate.

Q: Why do 220V relays buzz?

A: A buzzing relay may indicate a fault with the relay itself or the control circuit that is powering it. The first thing to do is rule out the supply voltage, the voltage level should be checked with a multimeter to prove that it is supplying a voltage that is in the operating voltage of the relay. Low voltage levels can cause the relay coil to buzz.
The second thing to do is to replace the relay itself. A buzzing noise coming from the relay could indicate an issue with the internal switches of the relay.

Q: Why do 220V relays stick?

A: The contacts of a relay can become stuck together if micro welding has occurred inside the relay. Micro welding is caused by excessive arcing taking place in the relay, this can be caused when incorrect levels of voltage/current have been applied to the relay and also when the relay has performed a high number of operations.
When the contacts of a relay become stuck you should always replace the relay as it is no longer able to switch over.

Q: What is an AC 220V relay?

A: An AC 220V relay is specifically designed to operate with alternating current at a voltage of 220 volts. It plays a crucial role in power control, motor control, and automation systems.

Q: What are the applications of a 220V relay?

A: Applications include industrial automation, power distribution, home automation, HVAC systems, motor control, automotive applications, energy management, and safety systems.

Q: Can a 220V relay be used in home automation?

A: Yes, 220V relays are commonly used in home automation systems to control lighting, HVAC systems, security systems, and other appliances.

Q: What is the significance of the 10A rating in a 220V 10A relay?

A: The 10A rating indicates the maximum current-carrying capacity of the relay, specifying that it can handle up to 10 amps of current without issues.

Q: Are there different types of 220V relays?

A: Yes, there are various types, including plug-in relays, panel mount relays, and PCB mount relays, each designed for specific mounting and usage requirements.

Q: What role do 220V relays play in industrial automation?

A: In industrial automation, relay modules are used to control motors, solenoids, valves, and other devices, facilitating the automation of various manufacturing processes.

Q: Can a 220V relay be used in automotive applications?

A: Yes, 220V relays are used in automotive systems to control lights, wipers, window motors, and other electrical components, helping manage high current levels in automotive circuits.

Q: How do transparent relays aid in troubleshooting?

A: Transparent relays allow visual inspection of internal components, making it easier to troubleshoot and diagnose issues with the relay's operation.

Q: What safety features do 220V relays provide in industrial settings?

A: 220V relays can be integrated into safety systems to activate alarms, trigger shutdowns, or control emergency equipment in case of potential hazards.

Q: Are there specific considerations when selecting a 220V relay for HVAC systems?

A: Yes, relays for HVAC systems should be chosen based on the specific requirements of fans, blowers, compressors, and other components, ensuring efficient and reliable control.

As one of the leading 220v relay manufacturers and suppliers in China, we warmly welcome you to buy high-grade 220v relay in stock here from our factory. All our products are with high quality and low price.

220V Contact Type Relay, AC 220V Transparent Relay, 220V10A Relay 11 Pin