Electromagnetic Relays

ATO provides compact-size electromagnetic relays with common coil voltages of 12V/24V/110V/220V for your choice. We can offer the most affordable wholesale price for EMR relay in China. We can provide the most affordable electromagnetic relay wholesale prices in China. Electromagnetic relays are sturdy in design and durable with excellent quality assurance.

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15+
Years in Relay Manufacturing

4,000+
Square Feet Factory Size

6,000+
Relays Produced Each Month

Electromagnetic Relays

An electromagnetic relay is a kind of electrical relay that works in the effect of the suction between the magnet core and the armature in the input circuit. Our factory provides a DPDT electromagnetic relay, 3PDT electromagnetic relay and 4PDT electromagnetic relay with 12V, 24V, 110V, and 240V coil voltage can be chosen. Electromagnetic relays play the roles of automatic adjustment, safety protection, and conversion circuits in the circuit. Meanwhile, ATO as a supplier offers an electromagnetic relay module and SPDT DIN rail mount electromagnetic relay. Electromagnetic relays are widely used in automation systems, sound equipment, receivers, and household appliances.

DPDT electromagnetic relay

DPDT Electromagnetic Relay

DPDT electromagnetic relay is a kind of electrical relay that works in the effect of the suction between the magnet core and the armature in the input circuit.
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3PDT electromagnetic relay

3PDT Electromagnetic Relay

3PDT electromagnetic relay is made of silver alloy material, which has super conductive property. We offers high quality 3PDT electromagnetic relay with 11-pin.
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4PDT lectromagnetic relay

4PDT Electromagnetic Relay

4PDT EMR adopts insulated transparent shell, operate temperature between -25℃ and 55℃. 12V, 24V, 110V, 220V coil voltages are available.
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Electromagnetic relay module

Electromagnetic Relay Module

The relay module is to integrate and serialize the single small power relay in the electrical control cabinet. High current relay with 1NO+1NC or 2NO+2NC contact.
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SPDT DIN rail mount electromagnetic relay

SPDT DIN Rail Mount Slim Relay

Slim interface relay is an electromagnetic switch. Electromagnetic relay switch with 24V DC coil voltage. It can be used in PLC automatic system.
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Quality guarantee

Stability

ATO, an electromagnetic relay factory in China has rich production experience, is able to master various production techniques and processes, and can carry out customized production according to customer needs.

The electromagnetic relay has an excellent design and stable product quality, which can ensure the stability and reliability of the product and improve the product qualification rate. Electromagnetic relay with high sensitivity has good electromagnetic compatibility. Fast changeover, electromagnetic interference.

Customized Service

Our factory provides customized relay design services. If special relay specifications are required, such as size, interface, contact configuration configuration, our engineers will design according to your needs and ensure that the design meets consumer application needs and industry standards.

Our team is here to help you and ensure your project goes smoothly. We provide comprehensive customized services, including pre-sales consultation, in-sales service and after-sales support. At the same time, we will also take customer satisfaction as our goal and continuously improve our service quality.

Technology support

Technical Support

Our team has rich technical knowledge and practical experience and can provide you with a full range of technical support for electromagnetic relays. No matter whether you encounter any problems with electromagnetic relay during selection, design, production, testing, or use.

We can provide you with timely solutions and technical support. We have a great technical team that can provide professional technical guidance on product manufacturing.

Electromagnetic Relay Operation


Electromagnetic relay features a quite strong load capacity. Looking through the transparent shell, the relay has a visible contact on the inside that provides the relay with a much stronger load capacity.

Connect four 220V bulbs to the action terminal of the relay. Connect a push button to the circuit to control the closing and opening of the relay coil. The relay is an 8-pin type and should be installed in alignment with the mounting base.

Power on the circuit. As the two sets of bulbs are controlled by separate circuits, switch on each set in turn by pressing the button. When L1 is disconnected, a pair of bulbs will not be controlled.


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Electromagnetic Relays Material


Transparent shell

Transparent housing

Relays with transparent shell design, sturdy and durable, so that the relay structure is clearly visible, can effectively protect the internal parts of the relay.

LED Indicator Lamp

LED indicator light with good light color, sensitive response and energy saving, convenient to show the working status of the relay.

Large copper wire

Manufactured large copper wire with good conductivity, can carry 12V/24V DC current, 110V/220V AC current, high quality and high safety.

Electromagnetic Relay FAQ

How to make an electromagnetic relay?

To make an electromagnetic relay, you'll need a few components: a coil of wire, an iron or ferromagnetic core, a movable armature, and a set of contacts. Wind the wire into a coil and connect it to an electrical circuit. When current flows through the coil, it generates a magnetic field that attracts the armature. Attach the armature to a switch or set of contacts. When the coil is energized, it pulls the armature to close the contacts, completing an electrical circuit. When the coil is de-energized, a spring or gravity returns the armature to its open position. This basic design allows a relay to control larger electrical currents with a smaller one, making it a useful component in many applications.

What is the voltage of electromagnetic relay?

The voltage of an electromagnetic relay can vary depending on its application and design. Relays are electro-mechanical switches used to control high-power electrical circuits with low-power control signals. Common relay coil voltages include 12V and 24V for automotive and industrial applications, while 120V and 240V are typical for household use. However, the voltage can range from a few volts to several hundred volts, depending on specific requirements. It's essential to select a relay with a coil voltage that matches the control signal and load requirements to ensure proper operation and safety in electrical systems.

What is the basic function of an electromagnetic relay?

An electromagnetic relay is an electrical switch that uses an electromagnet to control the flow of current in a circuit. Its basic function is to open or close an electrical circuit in response to a separate, low-power electrical signal. When the control coil receives the signal, it generates a magnetic field, which either attracts or repels a movable contact, causing it to make or break the connection between the relay's terminals. This allows a small, low-voltage signal to control a larger current, making relays essential for tasks like remote switching, circuit protection, and automation in various applications, such as industrial machinery, automotive systems, and home automation.

What is the purpose of the coil in an electromagnetic relay?

The coil in an electromagnetic relay serves as the primary component responsible for the relay's operation. When an electrical current is applied to the coil, it generates a magnetic field around it. This magnetic field attracts or repels a movable armature or contact, which is connected to the relay's switch contacts. This action causes the switch contacts to open or close, thus allowing or interrupting the flow of electrical current in another circuit. Essentially, the coil's purpose is to convert an electrical signal into a mechanical movement, enabling the relay to control the flow of electricity in one circuit based on the conditions in another, making it a crucial component in various applications, including automation, safety, and control systems.

Are there any limitations of electromagnetic relay?

Electromagnetic relays have several limitations. They are relatively slow in switching compared to solid-state alternatives, which can be a drawback in high-speed applications. They also consume more power and generate heat due to their coil operation. Mechanical wear and tear can lead to a limited operational lifespan. Electromagnetic interference (EMI) and arcing may occur during switching, potentially causing electrical noise and contact damage. Additionally, their large physical size and weight can make them impractical for compact and portable devices. Despite these limitations, electromagnetic relays remain valuable for specific applications where their reliability and simplicity are essential.

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