Solid State Relays (AC Switching)
Solid-state relays (SSRs)are electronic switches devoid of moving parts, ensuring prolonged operational life. These devices utilize power semiconductors like thyristors for rapid and reliable switching of AC or DC loads. Renowned for their fast switching speeds and absence of physical contacts, SSRs excel in applications where electromechanical relays may falter.

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 240/440V 4-32VDC load circuit and itself function monitoring solid state relay

Solid state relay with diagnostic
40A 440V 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

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

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

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.

G3DA4825 SSR relays
25A SSR, Integrated heat sink, DIN rail mount

G3DA4840 SSR relays
40A SSR, Integrated heat sink, DIN rail mount

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

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.

GHS series anodized heatsink for solid state relay
Anodized black Heatsink for SSR relays

Din rail mount heatsink for 10-120A SSR
SSR-2 heatsink with din rail clamp for 10-120A GDH series SSR.

TS35P fastening clamps (Din Rail adaptor)
GREEGOO TS35P fastening clamps on a 35mm DIN rail, Din Rail adaptor

SSR-3F heatsink for SSR
Heatsink with axial fan for 3 phase solid state relays, 10A to 60A.

SSR-1 heatsink
For 10A to 80A single phase solid state relays.
Greegoo's solid state relay covering panel mount AC switching and DC output type, din rail mount type, solid sate relay with heatsink integrated din rail clamp, Faston terminal connection, PCB type, plug-in type, PLC interface, pluggable miniature solid state relay module, analogue control solid state relay, and accessories of SSR relay, such as heatsink for SSR relays and TS35P fastening clamps (Din Rail adaptor) etc.
In a solid-state relay (SSR), "control voltage" refers to the input voltage range used to control the switching state of the relay. The control voltage is the signal voltage used to drive the SSR. By applying an appropriate voltage to the control terminal, the internal electronic circuit of the SSR operates, thereby controlling the on/off state of the output terminal.
In a solid-state relay (SSR), the control voltage refers to the input voltage range used to trigger the relay, such as 3-32V DC or 90-280V AC (220V ac Solid State Relay). 3-32V DC is suitable for low-voltage DC control, such as PLCs or microcontrollers, while 90-280V AC is suitable for industrial AC control. The control voltage must be within the specified range, and the type (DC or AC) must match the relay; otherwise, it may not function properly.
Greegoo is enjoying a brisk demand in the overseas market for high quality. We are using triacs for 10A, 25A and 40A, 40A and more are using SCR output, T3 copper base, ON brand optocoupler, integrated PCB design and new but perfect electronic components to guarantee the quality of Greegoo's Solid state relays.
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.

Sintering process in the chip of solid-state relays is of significant importance.
The use of sintering process in the chip of solid-state relays is of significant importance, primarily for the following reasons
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Guide to Heatsink Calculation and Selection
A heatsink is a device used for heat dissipation, commonly found in electronic devices to help dissipate heat and prevent overheating.
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Differences Between TRIAC Output SSR (GD series SSR) and SCR Output SSR (GDH series SSR)
GD and GDH series single phase solid state relay, what's their difference?
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Advantages of Low Voltage Drop DC Solid-State Relays - Heatsink is not required
Low voltage drop DC solid-state relays offer significant advantages in terms of efficiency, low heat generation, and high reliability, making them particularly suitable for applications requiring high efficiency and low energy consumption.
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