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
20/03/2020 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.
20/03/2020 RZ3A DS ENG Carlo Gavazzi LTD
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