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    Solid state relay, 3 phase, SSR-100DA, 100A 3-32V DC to AC

    $120.76
    SKU: ATO-SSR-TH100DA
    Cheap 3-phase solid state relay SSR-100DA, zero cross switching type, 3-32V DC control voltage, 100amp load current, 24-480V AC load voltage, with LED indicator, panel mount, strong structure and high performance.

    Solid state relay, 3 phase, SSR-120AA, 120A 70-280V AC to AC

    $145.95
    SKU: ATO-SSR-TH120AA
    Favorable price SSR-120AA solid state relay, 3 phase, 120 amp load current, 70-280V AC control voltage, 24-480V AC load voltage, zero-crossing switch, LED indicator, panel mount, high quality and long life time.

    Solid state relay, 3 phase, SSR-120DA, 120A 3-32V DC to AC

    $136.38
    SKU: ATO-SSR-TH120DA
    Low price 3-phase solid state relay SSR-120DA, load current 120 Amp, zero cross, DC to AC, 3-32V DC control voltage, 24-480V AC load voltage, with LED indicator, panel mount, strong structure and excellent quality.

    Industrial Solid State Relay 60A, 3-32V DC to AC SSR

    $69.61
    SKU: ATO-GYSSR-60DA
    Low price 60 Amp industrial solid state relay, single phase SSR-60DA, can control high current 24-440V AC with lowe voltage 3-32V DC, zero-crossing switch type, fast switching, compact design, high reliability and long lifespan.

    Industrial Solid State Relay 80A/100A/120A, DC to AC SSR

    $78.84
    SKU: ATO-GYSSR-120DA
    Compact-size industrial single phase solid state relay can be selected with load current 80A, 100A, 120A, with low control voltage 3-32V DC and low control current 7-32mA for high current 24-440V AC, high switching speed, no spark and no noise. Best DC to AC SSR for automation fields.

    Industrial Solid State Relay 150A/200A/250A/300A DC-AC SSR

    $102.86
    SKU: ATO-GYSSR-200DA
    Reliable industrial single phase solid state relay has optional load current 150A/ 200A/ 250A/ 300A to suit different automatic control requirements. DC to AC SSR can drive high current 24-440V AC with low control voltage 3-32V DC, safe and fast switching, high-strength structure, compact size and favorable price.

    Industrial Solid State Relay 350A, 3-32V DC to AC SSR

    $156.18
    SKU: ATO-GYSSR-350DA
    High current solid state relay has 350 Amp load current, designed for industrial automation fields. Single phase SSR, zero-crossing switch type, with 3-32V DC control 24-440V AC, LED working status indication, screw mounting and compact size, safe and fast switching.

    Solid State Relay Heat Sink for Industrial SSR/1-Phase SSR

    $58.86
    SKU: ATO-SSR-SHS
    The single phase solid state relay heat sink comes in a compact and lightweight design and is available for 10-25A, 10-60A and 10-120A solid state relays. ATO solid state relay heat sinks are designed to ensure the reliable and efficient operation of your electronic equipment. It has a wide range of applications including industrial automation, heating and cooling systems and renewable energy installations.

    Solid State Relay Heat Sink for Industrial SSR/3-Phase SSR

    $106.15
    SKU: ATO-SSR-HS
    High quality aluminum SSR heat sink is designed for 3-phase solid state relay less than 120A or industrial single phase solid state relay 60A - 350A, helpful to dissipate the heat and protect your solid state relay.

    10A SSR Solid State Relay, 3-32V DC to DC, Din Rail Mount

    $71.42
    SKU: ATO-SSR-DS10DD
    SSR-10DD, Single phase solid state relay with heat sink, 3-32V DC to DC, din rail mount, load current 10A, DC control, input 3-32VDC, output 3-75VDC, suitable for high frequency use. Aluminum heat sink for solid state relay small type, good dissipation, high quality and long service life.

    25A SSR Solid State Relay, 3-32V DC to DC, Din Rail Mount

    $72.73
    SKU: ATO-SSR-DS25DD
    25A Single phase slim SSR solid state relay with heat sink, DC to DC control, din rail mount, input 3-32VDC, output 3-75VDC. High reliability, high efficiency and long lifespan. Widely used in many automatic control systems.

    40A SSR Solid State Relay, 3-32V DC to DC, Din Rail Mount

    $75.74
    SKU: ATO-SSR-DS40DD
    40A Single phase slim SSR solid state relay with heat sink, DC to DC control, input 3-32VDC, output 3-75VDC, with din rail mount. High reliability, high efficiency and long lifespan. Widely used in many automatic control systems.

    50A SSR Solid State Relay, 3-32V DC to DC, Din Rail Mount

    $76.26
    SKU: ATO-SSR-DS50DD
    Single phase 50Amps solid state relay products, 3-32V DC to DC, with din rail mount. Use semiconductor components, high working frequency, long service life, low noise and reliable operation, no spark and a series of advantages, and it is widely used in digital process control device.

    60A SSR Solid State Relay, 3-32V DC to DC, Din Rail Mount

    $77.53
    SKU: ATO-SSR-DS60DD
    SSR-60A with din rail mount, 3-32V DC to DC, Single phase solid state relay products, with fast switching speed, no spark, no noise, no electromagnetic interference, long service life, no electric shock, strong anti-interference, strong compatibility.

    80A SSR Solid State Relay, 3-32V DC to DC, Din Rail Mount

    $78.44
    SKU: ATO-SSR-DS80DD
    80A, 3-32V, with din rail mount, Single phase solid state relays with fine electromagnetic interference, high sensitivity and fast switching speed, low drive voltage and current, unique shape and novel structure. Especially suitable for corrosion, moisture, dust resistant and other harsh environments. Widely used in many automatic control systems.

    500A SSR Solid State Relay, 3-32V DC to DC

    $214.62
    SKU: ATO-SSR-DD500A
    Favorable price 500A solid state relay SSR for sale, 500 apm load current (high current capacity), DC to DC type, 75V DC load voltage output, 3-32V DC control voltage input, compact design and high reliability, fast response and low noise, long-lasting and durable, high performance, widely used in application scenarios.

    Solid state relay SSR-15AA, 15A 70-280V AC to AC

    $51.69
    SKU: ATO-SSR-DH15AA
    Single phase solid state relay (SSR), AC control, load current 15 Amp, input voltage 70-280V AC and load voltage 24-480V AC, with LED indicator and panel mount. High reliability and favorable price.

    Solid state relay SSR-15DA, 15A 3-32V DC to AC

    $50.67
    SKU: ATO-SSR-DH15DA
    Low price 15 amps single phase solid state relay, SSR-15DA, 3-32V DC control voltage and 24-480V AC load voltage, with LED indicator. Strong structure, compact size and high performance.

    1000A SSR Solid State Relay, 3-32V DC to DC

    $370.61
    SKU: ATO-SSR-DD1000A
    High current solid state relay 1000 amp, DC to DC type, with 3-32V DC input. Specifically designed for applications requiring high current control. High electromagnetic interference suppression, high sensitivity, and fast switching speed. Widely used in various automated control systems.

    A relay is an electronic control device, which can automatically switch a controlled circuit to make a difference when given an input value like electrical, magnetic, optical or thermal signals. When the input value drops to a certain extent, it will return to the initial state and then the controlled circuit will also go back to the original state. It has the interaction between control system (input circuit) and the controlled system (the output circuit).

    Relays are usually used in automatic control circuits, as the automatic switches which actually can control a larger current by placing a smaller current. Therefore, it plays a role of automatic adjustment, safety protection, conversion circuit in the electric circuit. As one of the most important control elements, it is widely applied in remote control, telemetry, communication, automatic control, mechatronics and power electronics.

    What are the Types of ATO Relays?

    Electromagnetic Relay

    Electromagnetic relay 3PDTElectromagnetic relay (EMR) consists of electromagnetic system, contact system and release spring. Since the relay is used in the control circuit, the current flowing through the contact is relatively small (generally below 5A), so an arc extinguishing device is not required. Electromagnetic relay works in a way of driving the movable part in the magnetic circuit by the electromagnetic suction produced by the control current going through the coil, to achieve the function of contact open, closed and conversion. ATO provides compact-size electromagnetic relays with common coil voltages of 12V/24V/110V/220V for your choice.

    Solid-State Relay

    Solid state relayThe solid state relay (SSR) is a four-terminal device with two terminals as the input terminal and the other two terminals as the output terminal, and an isolation device is used in the middle to realize the electrical isolation of the input and output. Solid state relays are made of semiconductor devices instead of traditional coils, and do not need to rely on the movement of mechanical parts to control the opening and closing of switches, which effectively improves reliability and service life. Since coils are no longer used, problems such as electromagnetic interference and contact "sparks" are not encountered, and safety has also been greatly improved. ATO provides single phase and three phase solid state relays, including DC-AC and AC-AC, with load current from 10A to 120A.

    Thermal Overload Relay

    0.1-6 amp thermal overload relayThermal relays are mainly used for overload protection of motors, and are usually selected according to the type of motor, working environment, starting conditions and load properties. When the motor windings are connected, the thermal overload relay of two-phase structure can be selected. If the grid voltage is seriously unbalanced and the working environment is bad, the thermal relay of three-phase structure can be selected; when the motor winding is connected by △, it should be Choose a three-phase structure thermal relay with a phase failure protection device.

    Signal Relay

    15V DC signal relaySignal relays are commonly used devices in automatic control systems. They are used to connect and disconnect circuits to issue control commands and reflect equipment status to form automatic control and remote control circuits. All fields of automatic control use relays. ATO signal relays are available from 1.5V ~ 24V. Signal relays play an important role no matter as the core part of the relay signal system or as the interface part of the electronic or computer signal system. The reliability of the action of the relay directly affects the reliability and safety of the signal system.

    Safety Relay

    Safety relay 24VThe safety relay is used in the safety circuit, it's protective barrier upstream the devices in the general control system. Safety relay can be integrated with multi protection, it can even have a safety mode. For a large scale system, safety relay circuit is an important part. The common relay can be used for general overvoltage, voltage conversion, speed and coordination. Safety relay involves safety certification and level, safety relay provides extensible and functional conventional safety assurance, it's commonly used in the expansion of relay. Safety control over the system is higher than ordinary control, which is necessary and widely accepted. Safety relay is generally used for combination of switches, while relay is mostly used for linkage of contacts.

    Monitoring Relay

    3 phase monitoring relayMonitoring relay is a protection device for phase and voltage monitoring of power system or equipment. The relay can be used to monitor important parameters in the power supply system including over-voltage, under-voltage, phase loss (phase failure), three-phase voltage imbalance and phase sequence. Thus, it provides reliable relay protection for motors, pumps, fans, cranes, blowers, elevators, power distribution cabinet and air-conditioning system.

    What are the Functions of ATO Relay?

    • Expand the control range: For example, when the control signal of a multi-contact relay reaches a certain value, it can switch, break, and connect multiple circuits at the same time according to different forms of contact groups.
    • Amplification: For example, sensitive relays, intermediate relays, etc., with a very small amount of control, can control circuits with high power.
    • Integrated signal: For example, when multiple control signals are input to the multi-winding relay in a specified form, the predetermined control effect is achieved after comparison and synthesis.
    • Automatic, remote control, monitoring: For example, the relay on the automatic device can form a program control circuit together with other electrical appliances to realize automatic operation.