The Contactor Modulaire 2NC by TOMZN is a modular contactor equipped with two normally closed (NC) contacts. It is designed for controlling electrical circuits by interrupting or completing the circuit path. This component is widely used in automation systems, lighting control, and industrial applications where reliable switching of electrical loads is required.
The following table outlines the key technical details of the Contactor Modulaire 2NC:
Parameter | Value |
---|---|
Manufacturer | TOMZN |
Contact Configuration | 2 Normally Closed (2NC) |
Rated Voltage (AC) | 230V AC |
Rated Current | 25A |
Coil Voltage | 230V AC |
Frequency | 50/60 Hz |
Mechanical Durability | 1,000,000 operations |
Electrical Durability | 100,000 operations |
Mounting Type | DIN Rail |
Operating Temperature | -5°C to +40°C |
Dimensions (L x W x H) | 36mm x 90mm x 65mm |
Weight | 200g |
The Contactor Modulaire 2NC has the following terminal layout:
Terminal | Description |
---|---|
A1 | Coil input terminal (live) |
A2 | Coil input terminal (neutral) |
1L1 | Input terminal for the first NC contact |
2T1 | Output terminal for the first NC contact |
3L2 | Input terminal for the second NC contact |
4T2 | Output terminal for the second NC contact |
The Contactor Modulaire 2NC can be controlled using an Arduino UNO and a relay module. Below is an example circuit and code:
// Define the pin connected to the relay module
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 on the relay (energize the contactor coil)
digitalWrite(relayPin, HIGH);
delay(5000); // Keep the contactor energized for 5 seconds
// Turn off the relay (de-energize the contactor coil)
digitalWrite(relayPin, LOW);
delay(5000); // Wait for 5 seconds before repeating
}
Note: Ensure proper isolation between the Arduino and the high-voltage circuit. Use a relay module with optocoupler isolation for safety.
Issue | Possible Cause | Solution |
---|---|---|
Contactor does not switch when energized | Coil voltage is incorrect or not applied | Verify the coil voltage and connections. |
Contacts remain open even when de-energized | Mechanical failure or debris in the contact | Inspect and clean the contactor. Replace if necessary. |
Excessive heating during operation | Overloaded contacts or loose connections | Check the load current and tighten connections. |
Humming noise from the contactor | Coil voltage fluctuation or loose mounting | Stabilize the voltage and secure the contactor. |
Can I use the contactor for DC loads?
What happens if the coil voltage is too low?
Can I use this contactor for motor control?
How do I know if the contactor is faulty?