Relays, Contactors & Solenoids

FAQ

• What is a Relay?
• A relay is an electrically operated switch that uses an electromagnet to control the opening and closing of one or more sets of contacts. It allows a low-power control signal to switch a higher-power load.

• What is a Contactor?
• A contactor is similar to a relay but is designed for higher current applications, often used to control motors, lighting, and heavy loads in industrial settings.

• What is a Solenoid?
• A solenoid is a coil of wire wound around a core that becomes magnetized when current flows through the coil. It is used to create linear motion or perform mechanical actions when energized.

• What are the main differences between Relays, Contactors, and Solenoids?
• Relays are used for switching lower-power circuits with a control signal. Contactors are designed for higher current and power applications, often in industrial systems. Solenoids use electromagnetic force for linear motion or mechanical actions.

• How do I choose the right Relay, Contactor, or Solenoid for my application?
• Consider factors like load current and voltage requirements, switching speed, environmental conditions, and compatibility with the control system. Consult datasheets and manufacturer resources for guidance.