Induction Suppression Capacitors


  • Required for Handling Inductive Loads
    • Motors
    • Solenoids
    • Transformers
  • Capacitor Absorbs the High Voltages
  • Increase Lifespan of Relay
  • Stops Interference of Microprocessor Logic
  • Easy to Install
  • Use with AC or DC Applications
  • Not Required with Resistive Loads

By simply adding a capacitor to the line you will greatly reduce the electromagnetic interference that could damage the board or¬†interfere with the board’s performance.

Handling Inductive Loads

Perhaps the most overlooked aspect of relay control is proper handling of inductive loads. Inductive loads can best be defined as anything with a magnetic coil, such as a motor, solenoid, or a transformer. Controlling a inductive load using our relay controllers requires the use of induction suppression capacitors. The purpose of this capacitor is to absorb the high voltages generated by inductive loads, blocking them from the contacts of the relay. Without this capacitor, the lifespan of the relay will be greatly reduced. Induction can be so severe that it electrically interferes with the microprocessor logic of our controllers, causing relay banks to shut themselves down unexpectedly. In the case of USB devices, customers may experience loss of communications until the device is reconnected to the USB port.

See product page for more information, videos and wiring diagrams.

Why Choose NCD?

With NCD you know you have a proven reliable, easy to use, and extensible product. This means you don’t have to spend valuable time researching how to jig-saw pieces of your project together to get them to work cohesively. Being manufactured in the U.S.A. you know you’ll get good support and a quality product. NCD also ensures you won’t have to put any time into soldering or building a PCB, just pick your boards and power them up. Just knowing that every sensor, relay controller, and component is built around the same concept will save you guess work on how well software will work with any board.