Carlo Gavazzi RZ3A 3-Phase SSRs

Carlo Gavazzi RZ3A 3-Phase SSRs are designed for high-voltage switching of various loads like heating elements, transformers, and motors. These Solid State Relays (SSRs) are capable of switching high voltages up to 600VACrms. The RZ3A SSRs features zero-switching, integral snubber network, IP10 back-of-hand protection, built-in varistor, and over-temperature protection option with alarm output. This built-in varistor is capable of securing transient protection for heavy industrial applications. These SSRs offer three semiconductor power units that are soldered directly on to the Direct Copper Bonded (DCB) substrate for higher reliability and load cycle capability. The RZ3A SSRs also offer an LED indication of control input and over-temperature alarm status. Typical applications include thermoforming machines, climatic chambers, plastic extrusion machines, soldering ovens, air handling units, and shrink tunnels.


  • 3-phase Solid State Relay (SSR)
  • Zero switching
  • 3 x 25A, 55A or 75A rated operational current
  • Up to 690VAC rated operational voltage
  • 4VDC to 32VDC or 24VAC to 275VAC control voltage ranges
  • Integral snubber network
  • Built-in varistor
  • Over-temperature protection option with alarm output
  • IP 10 back-of-hand protection
  • LED indication of control input and over-temperature alarm status


  • Plastic extrusion machines
  • Thermoforming machines
  • Blow moulding machines
  • Coffee machines
  • Electrical ovens
  • Vending machines
  • Soldering ovens
  • Dryers
  • Climatic chambers
  • Air handling units
  • Plastic sealing machines
  • Shrink tunnels

Dimensions (mm)

Mechanical Drawing - Carlo Gavazzi RZ3A 3-Phase SSRs
Published: 2020-04-13 | Updated: 2022-03-10