Design with 12V DC DIN Relay SPST in Cirkit DesignerThe 12V DC DIN Relay SPST is a single-pole, single-throw relay designed to control 12V DC loads. It is mounted on a DIN rail, making it ideal for use in control panels and electrical enclosures. This relay acts as an electrically operated switch, allowing low-power control signals to manage higher-power circuits. Its robust design ensures reliable operation in industrial and automation applications.
This circuit consists of a 5V battery powering a 4-channel relay module, which controls four LEDs (red, yellow, green, and blue) through individual resistors. Each relay channel is activated by a corresponding SPST toggle switch, allowing manual control of the LEDs.
Open Project in Cirkit Designer
This circuit appears to be a light-activated switch controlling two bulbs using a 5V relay, with an LDR (Light Dependent Resistor) as the sensor. The relay is powered by a 48V to 5V converter, which is switched on by a 12V battery through an SPST toggle switch. The LDR's output is connected to the relay's input, enabling the relay to switch the bulbs on or off based on the ambient light level detected by the LDR.
Open Project in Cirkit Designer
This circuit is a control system using an ESP32 microcontroller to manage a 4-channel relay module, which in turn controls various loads. The relays are activated by rocker switches and provide visual feedback through LEDs, while power is supplied and regulated by an HLK-PM12 module and protected by a fuse and circuit breaker.
Open Project in Cirkit Designer
This circuit controls a DC motor using two 12V relays, which are powered by a 12V supply through a barrel jack. The relays are configured to switch the motor's connections, allowing for control over its operation.
Open Project in Cirkit DesignerBelow are the key technical details and pin configuration for the 12V DC DIN Relay SPST:
| Parameter | Value |
|---|---|
| Relay Type | Single-Pole, Single-Throw (SPST) |
| Operating Voltage | 12V DC |
| Coil Resistance | ~400 Ohms |
| Contact Rating | 10A @ 250V AC / 10A @ 30V DC |
| Mounting Type | DIN Rail |
| Switching Mechanism | Electromagnetic |
| Operating Temperature | -40°C to 85°C |
| Dimensions | 80mm x 20mm x 60mm |
| Weight | ~100g |
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | Coil (+) | Positive terminal of the relay coil. Connect to a 12V DC control signal. |
| 2 | Coil (-) | Negative terminal of the relay coil. Connect to ground (GND). |
| 3 | Common (COM) | Common terminal for the load circuit. |
| 4 | Normally Open (NO) | Normally open terminal. Connect to the load. Closed when the relay is activated. |
The 12V DC DIN Relay SPST can be controlled using an Arduino UNO. Below is an example circuit and code:
// Define the relay control pin
const int relayPin = 7;
void setup() {
// Set the relay pin as an output
pinMode(relayPin, OUTPUT);
// Ensure the relay is off at startup
digitalWrite(relayPin, LOW);
}
void loop() {
// Turn the relay on
digitalWrite(relayPin, HIGH);
delay(5000); // Keep the relay on for 5 seconds
// Turn the relay off
digitalWrite(relayPin, LOW);
delay(5000); // Keep the relay off for 5 seconds
}
Relay Not Activating
Load Not Powering On
Overheating
Voltage Spikes Damaging Circuit
Q: Can this relay switch AC loads?
A: Yes, the relay can switch AC loads up to 250V, provided the current does not exceed 10A.
Q: Is the relay suitable for outdoor use?
A: The relay is not weatherproof. Use it in a protected enclosure for outdoor applications.
Q: Can I use a 5V control signal to activate the relay?
A: No, the relay requires a 12V DC control signal to operate. Use a transistor or relay driver circuit if your control signal is 5V.