Instead of using a coil, solid-state relays (SSR) use power semiconductor devices such as thyristors and transistors. They provide a much faster switching speed than the mechanical relays. The Grove - 8-Channel Solid State Relay is based on the high-quality G3MC202P module, which allows you to use 5VDC to control max 240VAC. This module has eight channels, which can be controlled separately. With the help of the Grove interface, it becomes very convenient to use the SSR with your arduino.
An on-board STM32F030F4P6 is used to control the channels separately. The command from Arduino or other boards is transmitted via the I2C interface, the on-board STM32F030F4P6 will parse the command, so that you can control the switch you want.
Advantages over mechanical relays:
- Solid-state relays have much faster switching speeds compared to electromechanical relays, and have no physical contacts to wear out.
- Totally silent operation.
- No physical contacts means no sparking, allows it to be used in explosive environments, where it is critical that no spark is generated during switching.
- Increased lifetime, even if it is activated many times, as there are no moving parts to wear and no contacts to pit or build up carbon.
- Compact, thin-profile SSR of monoblock construction with an all-in-one lead frame incorporates a PCB, terminals and heat sink, which is much smaller than mechanical relays, and can integrate more channels.
- When closed, higher resistance (generating heat), and increased electrical noise.
- When open, lower resistance, and reverse leakage current.
- Only works for AC load.
- Dimensions: 120mm x 60mm x 25mm
- Weight: 255g
- Operating Input Voltage: 4~6V
- Rated Input Voltage: 5V
- Load Voltage Range: 75 to 264 VAC 50/60 Hz
- Rated Load Voltage: 100 to 240 VAC 50/60 Hz
- Load Current: 0.1 to 2 A
- Leakage Current: 1.5 mA max. (at 200 VAC)
- Insulation Resistance: 1,000 MΩ min. (at 500 VDC)
- Operating Temperature: -30°C to 80°C (with no icing or condensation)
- Operating Humidity: 45% to 85%RH