Solid State Relays (AC Switching)
10A 25A 40A Solid State Relay Single Phase Economical Type
10 to 40A SSR, single phase, triacs output, economical type.
40A 60A 80A 100A 120A Solid State Relay (modular single phase ssr)
40A/60A/80A/100A/120A sinlge phase solid state relay, SCR output
60A to 150A Solid State Relay
60A to 150A SSR, single phase, module type.
200A 250A 300A 350A 400A Solid State Relay (Single phase Industrial grade)
200A to 400A module type solid state relays.
High current Solid State Relay 500-1600A
500-1600A Solid state relays, high current solid state relay
Compact FASTON terminals ac switching solid state relay
1-Phase, 15A and 25A, 230VAC, FASTON terminals connect
IP20 Solid State Relays (Crouzet type)
480VAC
Integrated IP20 touch-safe removable covers Solid State Relays
660VAC
Single phase power solid state relay with removable protective flap
IP20 protection, removable flap
Dc to Ac and Ac to Ac Solid state relays
10A to 100A, single phase, three phase, dc to ac, dc to dc, ac to ac SSR.
Single phase Fotek solid state relay
SSR-25DA, SSR-40DA, monthly production up to 30,000pcs, low cost SSR, economical SSR.
High frequency AC switching solid state relay
0-1000Hz, 30-300A, 240V/440VAC
ISSR-40DA 60DA 25DA 40AA 25AA 60AA Intelligent SSR Relay
15A to 60A, ultra compact size, sensing the working status of the external environment
Solid state Relay with Load Circuit Monitoring
60A to 500A 24-240/44-440V 4-32VDC load circuit and itself function monitoring solid state relay
Solid state relay with diagnostic
40A 220V built-in RC snubber circuit, diagnostic over temperature and load open-circuit
3 phase motor reversing solid state relays
10A to 150A 660VAC
10A 25A 40A 3 phase Solid State Relay
10A, 15A, 25A, 40A SSR, 3 phase, trics output, economical type.
3 phase solid state relay 40A 60A 80A 100A 120A
Solid state switching contactor, SCR output, 40A, 60A, 80A, 100A, 120A SSR, 3 phase SSR relays.
200A 300A 400A 500A Three phase solid state relays
200A, 300A, 400A and 500A 3 phase SSR, 24-440VAC 48-660Vac output, DC to AC, AC to AC.
400A 500A three phase solid state relay
400A and 500A integrated solid state relays, three phase, panel mount
Compact din rail mount three phase solid state relay
10A to 40A, 24-380VAC output
3 phase Solid State Relay Assembly
3 phase SSR assembly, solid state contactor, ssr heatsink axial fan thermostat terminal assembly
Solid state soft starter module
Soft starter modules for single phase and three phase motor.
4-20mA or 0-5V or 10K potentiometer control SSR relay
3 in 1, 4-20mA or 0-5V or 10K potentiometer input, analog solid state relay, 10A to 120A control SSR relay.
Solid state voltage regulator 10A to 180A
10A to 180A single phase AC switching, 4-20mA SSR, 0-10V SSR relay or potentionmeter control SSR relay.
60A to 300A Single Phase AC Solid State Regulators
60A to 300A single phase AC solid state module, 4-20mA SSR, 0-10V or potentionmeter control SSR relay.
High current Solid State Voltage Regulator
350A to 500A single phase solid state regulator
Three phase Solid State Voltage Regulator
10A to 500A, 0-440 or 0-480VAC, 0-10V,4-20mA, Potentiometer control
Solid State Regulator GSRT series
10A to 125A 240/440V 0-10V/4-20mA input
4-20mA 0-10V Solid State Control Relay
10A to 120A, 240Vac or 380Vac output
PLC interface Ultra-slim Pluggable Miniature Solid State Relay Module
6.4mm socket with ssr module
Solid State Relay integrated Socket
12.8mm socket with SSR module 3A, 4A, 5A.
Miniature Solid State Relay Module
1A 2A 3A 60VDC or 230VAC, control voltage 3-32VDC, 5mm width
Pluggable Solid State Relay Module
3A 4A 5A DC to AC; DC to DC miniature solid state relay 12mm width
Plug in AC switching Solid State Relays
1,3,5,8,12A, 5-28VDC or 9-24VAC input, 4-240VAC or 24-440VAC output plug in SSR relays
Solid State Relay 6A 440V 660V 3-32VDC
6A 440V 660VAC 3-32VDC
GCM-4A10P 4 Channel Output Solid State Relay
4 channel output, dc to ac solid state relay
PLC 5/8/10 Channel Output Solid State Relay
100Hz operating frequency, compact design, ultra long service life
Three phase Diagnostic SSR - Communication SSR
Current digital display, MODBUS communication, RS485 port, Temperature detection, Phase loss detection, Panel function LEDs for operational status monitoring etc.
Intelligent Solid State Relay - Diagnostic SSR - Communication SSR
Current digital display, MODBUS communication, RS485 port, Temperature detection, Phase loss detection, Panel function LEDs for operational status monitoring etc.
Solid State Relay with Heatsink Integrated up to 60A
17.5mm solid state contactor, integrated heatsink with din rail clamps, 15A, 25A, 40A and 60A.
Single phase and three phase Solid state relay with heatsink
Single phase, 10A to 80A, 440VAC, GA6 series
Three phase solid state relay with heatsink
3 phase, 10A to 80A, 440VAC
G3DA4825 SSR relays
25A SSR, Integrated heat sink, DIN rail mount
G3DA4840 SSR relays
40A SSR, Integrated heat sink, DIN rail mount
Dual solid state relays
Dual output SSR, SCR output, 10A to 80A, single phase.
2 phase output solid state relays
2 phase SSR, 25A, 40A, 50A, 40-480 or 600Vac output, 4-32Vdc control, zero crossing and random control.
4 channel output Solid State Relay
4 output Solid State Relays, 240V/440V/660VAC up to 100A.
Solid State Automatic Transfer Switch
20A to 100A 110-240VAC
2 pole AC switching solid state relays
Dual output, ac switching, dual control and dual output, one control dual output optional.
The main differences between Solid State Relays (SSR) and Electromechanical Relays (EMR) lie in their structure and performance. SSRs have no mechanical contacts and use semiconductor devices for switching, offering longer lifespan, faster switching speeds, and noiseless operation, making them suitable for high-frequency operations and harsh environments. EMRs rely on electromagnetic coils to drive mechanical contacts, resulting in slower switching speeds, shorter lifespan, and noise during operation, and they are more sensitive to vibration and shock. SSRs consume less power and are ideal for applications requiring frequent switching, such as heating and motor control, while EMRs are suitable for general switching applications, especially where electrical isolation is needed.
A margin should be left when selecting the voltage and current of the solid state relay.
For resistive load: the current is selected according to 2.5~4 times the load current, and the voltage is selected according to 2~2.5 times the load power. Inductive load: current is selected according to 3-7 times load current, voltage is selected according to 2.5-3 times load voltage.
According to the relationship between load current and ambient temperature, when the ambient temperature is high or heat dissipation conditions are not good, the current capacity of the solid state relay should be increased accordingly.
In order to prevent the product from short-circuiting during use, it is necessary to connect a fast circuit breaker or a fast fuse in series with the product in the load circuit.
For inductive loads, a freewheeling diode must be connected to both ends of the load, and a varistor must be connected to the output end (the varistor (MOV) is selected according to 1~1.5 times of the power supply voltage) to prevent the high voltage generated during switching from damaging the solid-state switch.
When the product is installed, it is required that the contact surface between the heatsink and the product must be flat and clean, and a layer of thermally conductive silicone grease is applied to its surface, and then finally the screws set with flat washers and Spring washersare tightened symmetrically to fix.
For inductive loads, a MOV should be connected in parallel at the output for protection against transient high voltage damage to the SCR chip. MOV recommendation: 430-470V for 240V range; 680-750V for 440V range; and 1100-1200V for 660V range.
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