RZ3A Industrial, 3-phase zero switching Main features 3-phase Solid State Relay Zero switching Rated operational current: 3 x 25, 55 or 75 A Rated operational voltage: Up to 690 VAC Control voltage, 4-32 VDC or 24-275 VAC 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 Description A Solid State Relay family designed to switch various loads such as heating elements, motors and transformers. The relay is capable of switching high voltages up to 600 VACrms. The built-in varistor secures transient protection for heavy industrial applications. For higher reliability and load cycle capability three semiconductor power units are soldered directly on to the direct copper bonded (DCB) substrate. AC- or DC-controlled versions are available. Built-in LED status indication for applied control voltage and overtemperature alarm (optional). The series covers a range of load currents up to 75 AACrms. Applications 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, etc. Main functions 3-pole switching AC solid state relay 24/05/2021 RZ3A DS ENG Carlo Gavazzi LTD 1RZ3A References Order code RZ3A Enter the code entering the corresponding option instead of Code Option Description Notes RZ - Solid State Relay 3 - Number of poles A - Switching mode: zero switching 40 Rated operational voltage: 400 VACrms 48 Rated operational voltage: 480 VACrms 60 Rated operational voltage: 600 VACrms 69 Rated operational voltage: 690 VACrms Available only with 75 A version D Control voltage: 4 - 32 VDC A Control voltage: 24-275 VAC / 24-50 VDC 25 Rated operational current: 3 x 25 AACrms 55 Rated operational current: 3 x 55 AACrms 75 Rated operational current: 3 x 75 AACrms P Over-temperature protection and alarm output Not available with 690 VAC version Selection guide Rated operational current Rated operational Control voltage voltage 3 x 25 A 3 x 55 A 3 x 75 A 4-32 VDC RZ3A40D25 RZ3A40D55 RZ3A40D75 400 VACrms 24-275 VAC/ RZ3A40A25 RZ3A40A55 RZ3A40A75 24-50 VDC 4-32 VDC RZ3A48D25 RZ3A48D55 RZ3A48D75 480 VACrms 24-275 VAC/ RZ3A48A25 RZ3A48A55 RZ3A48A75 24-50 VDC 4-32 VDC RZ3A60D25 RZ3A60D55 RZ3A60D75 600 VACrms 24-275 VAC/ RZ3A60A25 RZ3A60A55 RZ3A60A75 24-50 VDC 4-32 VDC - - RZ3A69D75 690 VACrms 24-275 VAC/ - - RZ3A69A75 24-50 VDC Notes Over-temperature protection and alarm output: add suffix P to include over-temperature protection and alarm output. Example: RZ3A60D75P. Not available on 690VACrms versions. 24/05/2021 RZ3A DS ENG Carlo Gavazzi LTD 2