What is a Solid State Relay / contactor ?
A Solid State Relay or Contactor (SSR or SSC) is an electronic component that switches Power (AC or DC current) to a load circuit and provides electrical isolation between an application’s control circuit and load circuit. It is a competitive technology to Electromechanical Relays (EMRs) and other switching technologies such as Mercury Displacement Relays (MDRs).
Why Use Solid State Switching Technology? Circuit Trigger Switch Control 0 Switching Technology?
- Long life
- Quiet operation
- Minimum electrical noise
- Low power consumption
- Shock & vibration resistant
- Ideal for harsh environments
- High compatibility with control systems
- Fast switching
Although there are literally thousands of individual uses for Solid State Relays and Contactors, most can be categorized into the following applications:
Heating Control This encompasses the largest segment of solid state relay customers. Applications include, but are not limited to: professional food equipment, plastic molding/extrusion machinery, HVAC&R and soldering equipment.
Benefits: Temperature accuracy, long life, no maintenance, safe product & easy to interface. Suitable for heater, fan, blower and valve control.
Lighting Control These applications are usually broken down into three categories: theatrical, warehouse and commercial. Many of the products used in this segment are designed for the specific application.
Benefits: Dimming, silent operation, fast switching, long life, no maintenance, safe product, easy to interface & reduced parts count. Motion Control Includes elevators, lifts, hoists, exercise equipment, conveyor systems, solar, fans, solenoid and valve control. Benefits: Endurance, shock & vibration resistance, Soft Start, reversing, no arcing, fast switching, long life, no maintenance, easy to interface & reduced parts count.
- Switching of Heater by Temperature Controller
- Hot Runner Systems in Plastic Industry
- Heater applications in Furnace/Oven industry
- Plastic Processing Machinery, Injection Molding, Blow Molding and Extruder
- Solder Screen Printers, Solder Wave / Re-flow Machine
- Solid and Liquid Packaging Equipments and Machinery
- Medical Equipments
- Texturising Machinery
- Printing Machinery
- Controlling of Infrared Heaters SSRs.
Ratings from 16 to 120 @ 480 VAC
Ratings from 100 to 300 @ 530 VAC
Output is made up by AC switch of SCR
Input Control Voltadge:3-32VDC or 220 VAC