Fotek Solid State Relay SSR-25DA 25A Documentation

Component Name

Fotek Solid State Relay SSR-25DA 25A

Description

The Fotek Solid State Relay SSR-25DA 25A is a high-current, high-reliability solid-state relay designed for use in a wide range of industrial and commercial applications. This component is a type of electronic switching device that enables the control of high-power AC or DC loads using a low-power signal.

Functionality

The SSR-25DA 25A solid-state relay functions by using a small input control signal to switch a larger output load. The relay consists of an input circuit, a switching element, and an output circuit. When a voltage is applied to the input circuit, it activates the switching element, which in turn switches the output circuit, allowing current to flow to the connected load.

Key Features

High-Current Capacity: The SSR-25DA 25A can handle high currents up to 25A, making it suitable for applications requiring significant power handling.
Solid-State Design: Unlike traditional electromagnetic relays, the SSR-25DA 25A features a solid-state design, which provides increased reliability, faster switching times, and reduced wear and tear.
Low Input Control Signal: The relay can be controlled using a low-power signal (typically 3-32V DC), making it compatible with a wide range of control systems and microcontrollers.
Isolation: The input and output circuits are electrically isolated, providing a high degree of safety and preventing interference between the control signal and the load.
Fast Switching Time: The SSR-25DA 25A has a fast switching time of <10ms, making it suitable for applications requiring quick response times.
High Surge Capability: The relay can withstand high surge currents, ensuring reliable operation in applications where transient voltages may occur.
Compact Design: The component has a compact, heat sink-mounted design, making it easy to integrate into a wide range of applications.
Wide Operating Temperature Range: The SSR-25DA 25A operates over a temperature range of -40C to 80C, making it suitable for use in harsh environments.

Input Control Signal

3-32V DC

Output Load Capacity

25A

Output Voltage

24-480V AC/DC

Switching Time

<10ms

Isolation Voltage

2500V AC

Surge Capability

100A

Operating Temperature Range

-40C to 80C

Storage Temperature Range

-40C to 100C

Dimensions

50.5 x 26.5 x 18.5mm

Weight

60g

Applications

The Fotek Solid State Relay SSR-25DA 25A is suitable for use in a wide range of applications, including

Industrial automation

HVAC systems

Lighting control systems

Power supplies

Motor control systems

Medical devices

Aerospace and defense systems

Conclusion

The Fotek Solid State Relay SSR-25DA 25A is a high-performance, reliable, and compact solid-state relay suitable for a wide range of applications. Its high-current capacity, fast switching time, and robust design make it an ideal choice for control systems requiring high-power handling and precision control.

Pin Configuration

Fotek Solid State Relay SSR-25DA 25A Pinout Explanation and Connection Guide
The Fotek Solid State Relay SSR-25DA 25A is a high-power solid-state relay module designed for controlling high-current loads. It features a compact design and is suitable for a wide range of applications, including industrial control, lighting systems, and home automation. This documentation provides a detailed explanation of the pins and their connections.
Pinout:
The SSR-25DA 25A relay module has 6 pins, labeled as follows:
1. VCC (Power Supply Voltage)
Pin Function: Power supply voltage input
Description: This pin is used to connect the power supply voltage, typically between 3.3V to 5V DC, to the relay module.
Connection: Connect the VCC pin to a suitable power supply voltage source, such as a battery or a regulated power supply.
2. IN (Input Control Signal)
Pin Function: Input control signal
Description: This pin is used to control the relay state (on/off) by applying a logical high or low signal.
Connection: Connect the IN pin to a digital output from a microcontroller, Arduino, or other control devices.
3. GND (Ground)
Pin Function: Ground connection
Description: This pin is used to connect the ground of the power supply and the control signal.
Connection: Connect the GND pin to the ground of the power supply and the control device.
4. NO (Normally Open)
Pin Function: Normally open contact
Description: This pin is connected to the load when the relay is turned on.
Connection: Connect the NO pin to one terminal of the load (e.g., a light bulb or a motor).
5. COM (Common)
Pin Function: Common contact
Description: This pin is connected to the other terminal of the load when the relay is turned on.
Connection: Connect the COM pin to the other terminal of the load (e.g., a light bulb or a motor) and to the neutral or ground of the power supply.
6. NC (Normally Closed)
Pin Function: Normally closed contact
Description: This pin is connected to the load when the relay is turned off.
Connection: Not typically used in standard applications, but can be used for special scenarios where a normally closed contact is required.
Connection Structure:
To connect the Fotek Solid State Relay SSR-25DA 25A, follow this structure:
1. Connect the VCC pin to a suitable power supply voltage source (e.g., +5V).
2. Connect the IN pin to a digital output from a microcontroller or other control devices.
3. Connect the GND pin to the ground of the power supply and the control device.
4. Connect the NO pin to one terminal of the load (e.g., a light bulb or a motor).
5. Connect the COM pin to the other terminal of the load and to the neutral or ground of the power supply.
6. Ensure the NC pin is left unconnected in standard applications.
Important Notes:
Make sure to use a suitable power supply voltage and current rating for the relay module and the load.
Use a suitable heat sink or cooling system to prevent overheating of the relay module, especially when controlling high-current loads.
Verify the relay module's operating voltage and current rating before connecting it to the load and power supply.
By following this pinout explanation and connection guide, you can safely and effectively use the Fotek Solid State Relay SSR-25DA 25A in your IoT projects and applications.

Code Examples

Fotek Solid State Relay SSR-25DA 25A Documentation

The Fotek Solid State Relay SSR-25DA 25A is a high-power solid-state relay (SSR) designed to control high-current loads in a variety of applications, including industrial automation, lighting control, and power management systems. This documentation provides an overview of the component's features, specifications, and example code snippets to help you get started with using the SSR-25DA in your projects.

Features and Specifications:

Input: 3-32V DC
 Output: 24-480V AC or 10-60V DC
 Max current: 25A
 Power rating: 600VA
 Operating frequency: 50/60Hz
 Trigger type: DC control signal
 Response time: <10ms
 Isolation voltage: 2500V AC
 Dimensions: 50 x 25 x 18 mm

Example Code Snippets:

### Example 1: Controlling a 240V AC Load with an Arduino Uno

In this example, we'll use an Arduino Uno to control a 240V AC load using the SSR-25DA.

Hardware:

Arduino Uno
 Fotek Solid State Relay SSR-25DA 25A
 240V AC load (e.g., a light bulb or motor)
 Jumper wires

Code:
```c++
const int relayPin = 2;  // Choose a digital pin on the Arduino

void setup() {
  pinMode(relayPin, OUTPUT);
}

void loop() {
  digitalWrite(relayPin, HIGH);  // Turn the relay ON
  delay(5000);  // Wait 5 seconds
  digitalWrite(relayPin, LOW);  // Turn the relay OFF
  delay(5000);  // Wait 5 seconds
}
```
How it works:

1. Connect the SSR-25DA's input terminals to the Arduino's digital pin (in this case, pin 2) and GND.
2. Connect the 240V AC load to the SSR-25DA's output terminals.
3. In the code, we set the relayPin as an output and toggle it HIGH (to turn the relay ON) and LOW (to turn the relay OFF) using the digitalWrite() function.
4. The relay switches the 240V AC load ON and OFF according to the digital signal from the Arduino.

### Example 2: Controlling a 12V DC Fan with a Raspberry Pi

In this example, we'll use a Raspberry Pi to control a 12V DC fan using the SSR-25DA.

Hardware:

Raspberry Pi
 Fotek Solid State Relay SSR-25DA 25A
 12V DC fan
 Jumper wires

Code:
```python
import RPi.GPIO as GPIO
import time

# Set up GPIO mode
GPIO.setmode(GPIO.BCM)

# Set up the relay pin as an output
relay_pin = 17
GPIO.setup(relay_pin, GPIO.OUT)

try:
    while True:
        GPIO.output(relay_pin, GPIO.HIGH)  # Turn the relay ON
        time.sleep(2)  # Wait 2 seconds
        GPIO.output(relay_pin, GPIO.LOW)  # Turn the relay OFF
        time.sleep(2)  # Wait 2 seconds
except KeyboardInterrupt:
    GPIO.cleanup()
```
How it works:

1. Connect the SSR-25DA's input terminals to the Raspberry Pi's GPIO pin (in this case, pin 17) and GND.
2. Connect the 12V DC fan to the SSR-25DA's output terminals.
3. In the code, we set up the relay pin as an output using the RPi.GPIO library.
4. We toggle the relay pin HIGH (to turn the relay ON) and LOW (to turn the relay OFF) using the GPIO.output() function.
5. The relay switches the 12V DC fan ON and OFF according to the digital signal from the Raspberry Pi.

Remember to always follow proper safety precautions when working with high-voltage and high-current devices. Ensure that your project complies with relevant regulations and safety standards.