3 Phase AC-AC SSR Solid State Relay
ATO provides AC to AC three phase solid state relay for your applications, load current of 10A, 25A, 40A, 60A, 80A, 100A, 120A available, with 3-32V DC input and 24-480V AC output, LED indicator and panel mount. ATO SSR relay offers a reliable switching the commercial and industrial loads, such as computer peripheral interface device, printing machine, molding machine, food machine, packaging machine, and so on.
Three Phase SSR Features
- Long service life and high reliability. Three phase solid state relays have no mechanical parts and are made of solid state devices to complete the contact function, so they can work in the environment of high impact and vibration. The long service life and high reliability of the 3 phase solid state relay are determined by the inherent characteristics of the components that compose the solid state relay.
- High sensitivity, low control power and good electromagnetic compatibility. 3 phase SSRs have a wide input voltage range, low drive power, and are compatible with most logic ICS without buffers or drivers.
- Capable of fast conversion. SSR relays use solid state devices, so the switching speed can be from a few milliseconds to a few microseconds.
- Low electromagnetic interference. SSR solid state relays have no input coil, thus reducing electromagnetic interference. Most AC output solid state relays are a zero-voltage switch that turns on at zero voltage and off at zero current.
Specification
Model: ATO-SSR-THAA
Voltage Type: AC to AC
Load Voltage: 24-480V AC
Control Voltage: 70-280V AC
Max. Input Current: 20mA
Must Operation Voltage: 70V AC
Must Release Voltage: 50V AC
Max. on-State Voltage Drop: 1.5V
Peak Voltage: 800V AC
Load Current: 10A, 25A, 40A, 60A, 80A, 100A, 120A
Operation Temperature: -20℃~ 80℃
Max off-State Leakage Current: 8mA
Dielectric Strength: 2500V
Certification: CE, CCC, TUV, UL
Note:
- When the load is a resistive load, the maximum load current of the selected SSR should be 2~3 times greater than the actual load current.
- When the load is an inductive load, the maximum load current of the selected SSR should be more than 7~8 times the actual load current.
- When the maximum load current is higher than 10A, a heat sink must be installed to the solid state relay, or the SSR relay should be mounted on a metal base plate with heat dissipation effect, and the thermal grease is applied between them.
Dimension (Unit: mm)
Wiring Diagram
Tips: What are the components of three phase solid state relay?
The solid state relay consists of three parts, including input circuit, isolation (coupling) and output circuit.
Input circuit. According to the different categories of input voltage, the input circuit can be divided into three types: DC input circuit, AC input circuit and AC/DC input circuit. Some input control circuits are also compatible with TTL/CMOS, positive and negative logic control and inverse equality functions, which can be easily connected with TTL and MOS logic circuits. For control signals with a fixed control voltage, a resistive input circuit is used. The control current is guaranteed to be greater than 5mA. For the control signal with a large variation range (such as 3~32V), a constant current circuit is used to ensure that the current can work reliably at more than 5mA in the entire voltage variation range.
Input circuit. According to the different categories of input voltage, the input circuit can be divided into three types: DC input circuit, AC input circuit and AC/DC input circuit. Some input control circuits are also compatible with TTL/CMOS, positive and negative logic control and inverse equality functions, which can be easily connected with TTL and MOS logic circuits. For control signals with a fixed control voltage, a resistive input circuit is used. The control current is guaranteed to be greater than 5mA. For the control signal with a large variation range (such as 3~32V), a constant current circuit is used to ensure that the current can work reliably at more than 5mA in the entire voltage variation range.
- Isolation coupling. The isolation and coupling methods of the input and output circuits of solid-state relays include photoelectric coupling and transformer coupling: photoelectric coupling usually uses photodiode-phototransistor, photodiode-bidirectional light-controlled thyristor, photovoltaic cell, and realizes the control side. Isolated control from the load side; high-frequency transformer coupling is that the self-excited high-frequency signal generated by the input control signal is coupled to the secondary, detected and rectified, and processed by the logic circuit to form a drive signal.
- Output circuit. The power switch of the SSR is directly connected to the power supply and the load terminal to realize the on-off switching of the load power supply. Mainly used are high-power transistors (switch-Transistor), one-way thyristor (Thyristor or SCR), two-way thyristor (Triac), power field effect transistor (MOSFET), insulated gate bipolar transistor (IGBT).
sales@atorelays.com
+86 773-363-7977
BLDG A, MiXc Xiufeng, Guilin China