Carlo Gavazzi RZ3A Specifications

RZ3A

Industrial, 3-phase zero switching

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. Built­in LED status indication for applied control voltage
and overtemperature alarm (optional).
The series covers a range of load currents up to
75 AACrms.

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

Applications

Plastic extrusion machines, thermoforming machines, blow moulding machines, co󰀨ee 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

RZ3A DS ENG09/02/2017

Carlo Gavazzi LTD

1

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

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

RZ3A

P Over-temperature protection and alarm output Available only for A and D input

Selection guide

Rated operational

voltage

400 VACrms

480 VACrms

600 VACrms

690 VACrms

Control voltage

4-32 VDC RZ3A40D25 RZ3A40D55 RZ3A40D75

24-275 VAC/24-50

VDC

4-32 VDC RZ3A48D25 RZ3A48D55 RZ3A48D75

24-275 VAC/24-50

VDC

4-32 VDC RZ3A60D25 RZ3A60D55 RZ3A60D75

24-275 VAC/24-50

VDC

4-32 VDC - - RZ3A69D75

24-275 VAC/24-50

VDC

3 x 25 A 3 x 55 A 3 x 75 A

RZ3A40A25 RZ3A40A55 RZ3A40A75

RZ3A48A25 RZ3A48A55 RZ3A48A75

RZ3A60A25 RZ3A60A55 RZ3A60A75

- - RZ3A69A75

Rated operational current

Notes

Over-temperature protection and alarm output: add su󰀩x P to include over-temperature protection and alarm

output.
Example: RZ3A60D75P. Not available on 690VACrms versions.

RZ3A DS ENG09/02/2017

Carlo Gavazzi LTD

2

CARLO GAVAZZI compatible components

Purpose Component name/code Notes

Heatsinks RHS Heatsinks and fans
Thermal pad RZHT Packing qty. 10 pcs.

Further reading

Information Where to nd it

Online heatsink selector tool http://www.productselection.net/heatsink/heatsinkSelector.php?LANG=UK

RZ3A

RZ3A DS ENG09/02/2017

Carlo Gavazzi LTD

3

73.5mm
4xM4

6xM5

12mm

5.3mm

103mm

92mm

47.6mm

41mm

L1 L2 L3

T1 T2 T3

A1 A2

B1 B2

Heatsink

Compound

1

2

Features

General

Material Noryl
Potting compound Polyurethane
Weight Approx. 380 g

Rated isolation voltage

Pollution degree 3

Base plate

Dimensions

Input to output: 4000 VACrms
Output to case: 4000 VACrms

25, 55A: aluminum, nickel-plated
75A: copper, nickel-plated

RZ3A

1. Relay On LED

2. Over-temperature Alarm Trip LED (su󰀩x “P” option)

RZ3A DS ENG09/02/2017

Carlo Gavazzi LTD

4

Performance

Mains supply

RZ3A40.. RZ3A48.. RZ3A60.. RZ3A69..
Operational voltage range 24-440 VAC 42-530 VAC 42-660 VAC 42-750 VAC
Operational frequency range 45 to 65 Hz
Blocking voltage 850 Vp 1200 Vp 1600 Vp 1600 Vp
Overvoltage category III

Outputs

RZ3A..25.. RZ3A..55.. RZ3A..75..

Rated operational current
AC 51 @ Ta = 25°C
AC 53a @ Ta = 25°C

Min. operational load current 150 mArms 250 mArms 400 mArms
Rep. overload current t=1 s 37 Arms < 125 Arms < 150 Arms
Non-rep. surge current t=10 ms 325 Ap 600 Ap 1150 Ap

O󰀨-state leakage current < 3 mArms

I2t for fusing t=10 ms 525 A2s 1800 A2s 6600 A2s

Critical dV/dt o󰀨 state min. ≥ 500 V/μs

On-state voltage drop < 1.6 Vrms

25 Arms

5 Arms

55 Arms
15 Arms

75 Arms
20 Arms

RZ3A

Inputs

RZ3A..D.. RZ3A..A..
Control voltage 4-32 VDC 24-275 VAC/24-50 VDC
Pick-up voltage 3.8 VDC 18 VAC/20 VDC
Drop-out voltage 1.2 VDC 9 VAC/DC
Input current ≤ 23 mA ≤ 15 mA
Response time pick-up

Power output = 50 Hz 10 ms 20 ms
Response time drop-out

Power output = 50 Hz 10 ms 30 ms

Thermal data

Operating temperature -30° to +80°C (-22° to +176° F)
Storage temperature -40° to +100°C(-40° to + 212° F)
Junction temperature +125°C (+ 257°F)

RZ3A DS ENG09/02/2017

Carlo Gavazzi LTD

5

Compatibility and conformity

RZ3A

Approvals

Electromagnetic compatibility (EMC) - immunity

Electrostatic discharge (ESD)

Radiated radio frequency

Electrical fast transient (burst)

Conducted radio frequency

Electrical surge

Voltage dips

Voltage Interruptions

Electromagnetic compatibility (EMC) - emissions
Radio interference eld emis-

sion (radiated)

Radio interference voltage
emissions (conducted)

EN 61000-4-2
8 kV air discharge, 4 kV contact (PC2)

EN 61000-4-3
10 V/m, from 80 MHz to 1 GHz (PC1)
10 V/m, from 1.4 to 2 GHz (PC1)
3 V/m, from 2 to 2.7 GHz (PC1)

EN 61000-4-4
Output: 2 kV, 5 kHz (PC1)
Input: 1 kV, 5 kHz (PC1)

EN 61000-4-6
10V/m, from 0.15 to 80 MHz (PC1)

EN 61000-4-5
Output, line to line: 1 kV (PC1)
Output, line to earth: 2 kV (PC1)
Input, line to earth: 2 kV (PC1)

EN 61000-4-11
0% for 0.5, 1 cycle (PC2)
40% for 10 cycles (PC2)
70% for 25 cycles (PC2)

EN 61000-4-11
0% for 5000ms (PC2)

EN 55011
Class A: from 30 to 1000 MHz

From 0.15 to 30 MHz
EN 55011

Class A (industrial) with lters

EN 60947-4-3

Class A (no ltering needed)

Note:

• Performance Criteria 1 (PC1): no degradation of performance or loss of function is allowed when the product is operated

as intended.

• Performance Criteria 2 (PC2): during the test, degradation of performance or partial loss of function is allowed. However

when the test is complete the product should return operating as intended by itself.

• Performance Criteria 3 (PC3): temporary loss of function is allowed, provided the function can be restored by manual

operation of the controls.

• Control input lines must be installed together to maintain products' susceptability to Radio Frequency interference.

RZ3A DS ENG09/02/2017

Carlo Gavazzi LTD

6

Over

Over-temperature protection (option: ...P)

RZ3A

SSR Input*

Green LED

SSR Output

-temperature
sensing

Red LED

Alarm status

Over-temperature

detection

Over-temperature protection is ON

SSR output disabled

Closed

Open

20ms

*After over-temperature condition is removed, SSR can be reset by switching OFF the control input for more
than 20 ms and switching back ON: this will switch ON the SSR output

Heatsink selection

Thermal resistance [K/W] of RZ3..25

Load current [A]

25.0 0.44 0.34 0.23 0.12 0.01 - - 92

22.5 0.62 0.49 0.37 0.24 0.12 - - 80

20.0 0.84 0.69 0.54 0.40 0.25 0.10 - 68

17.5 1.12 0.95 0.78 0.60 0.43 0.25 0.08 58

15.0 1.51 1.30 1.09 0.88 0.67 0.46 0.25 47

12.5 2.06 1.80 1.54 1.27 1.01 0.75 0.48 38

10.0 2.75 2.40 2.06 1.72 1.37 1.03 0.69 29

7.5 3.83 3.35 2.87 2.39 1.91 1.43 0.96 21

5.0 6.01 5.26 4.51 3.76 3.01 2.25 1.50 13

2.5 12.62 11.04 9.46 7.89 6.31 4.73 3.15 6

20 30 40 50 60 70 80

Ambient temp. [°C]

Power dissipation [W]

RZ3A DS ENG09/02/2017

Carlo Gavazzi LTD

7

Thermal resistance [K/W] of RZ3 ..55

RZ3A

Load current [A]

55.0 0.29 0.23 0.17 0.11 0.05 - - 164

50.0 0.36 0.29 0.22 0.16 0.09 0.02 - 148

45.0 0.44 0.36 0.29 0.21 0.14 0.06 - 133

40.0 0.54 0.46 0.37 0.29 0.20 0.12 0.03 118

35.0 0.67 0.58 0.48 0.38 0.28 0.19 0.09 103

30.0 0.85 0.74 0.62 0.51 0.39 0.28 0.16 87

25.0 1.10 0.96 0.82 0.68 0.55 0.41 0.27 73

20.0 1.38 1.21 1.04 0.87 0.69 0.52 0.35 58

15.0 1.85 1.62 1.39 1.16 0.93 0.70 0.46 43

10.0 2.80 2.45 2.10 1.75 1.40 1.05 0.70 29

5.0 5.62 4.92 4.21 3.51 2.81 2.11 1.40 14

2.5 11.26 9.85 8.45 7.04 5.63 4.22 2.82 7

20 30 40 50 60 70 80

Thermal resistance [K/W] of RZ3 ..75

Load current [A]

75.0 0.27 0.22 0.17 0.12 0.07 0.02 - 201

70.0 0.32 0.27 0.21 0.16 0.10 0.05 - 184

65.0 0.38 0.32 0.26 0.20 0.14 0.08 0.02 167

60.0 0.44 0.38 0.31 0.25 0.18 0.11 0.05 151

55.0 0.52 0.45 0.38 0.30 0.23 0.16 0.08 136

50.0 0.62 0.54 0.45 0.37 0.29 0.21 0.12 121

45.0 0.74 0.64 0.55 0.46 0.36 0.27 0.17 106

40.0 0.87 0.76 0.65 0.54 0.43 0.32 0.22 92

35.0 1.01 0.89 0.76 0.63 0.51 0.38 0.25 79

30.0 1.21 1.06 0.91 0.76 0.60 0.45 0.30 66

25.0 1.49 1.30 1.11 0.93 0.74 0.56 0.37 54

20.0 1.90 1.67 1.43 1.19 0.95 0.71 0.48 42

15.0 2.60 2.28 1.95 1.63 1.30 0.98 0.65 31

10.0 4.01 3.51 3.01 2.51 2.01 1.50 1.00 20

5.0 8.24 7.21 6.18 5.15 4.12 3.09 2.06 10

20 30 40 50 60 70 80

Ambient temp. [°C]

Ambient temp. [°C]

Power dissipation [W]

Power dissipation [W]

Alarm output specications

Collector - emitter voltage 35 VDC
Emitter - collector voltage 6 VDC
Collector current 50 mA
Delay time on reset 20 ms

RZ3A DS ENG09/02/2017

Carlo Gavazzi LTD

8

Regulation

ZC

ZC

ZC

Over Temp

Circuit

A1 (~) (+)

A2 (~) (-)

B1 (+)

B2 (-)

Control

Input

AC/DC

Alarm

Output

T1

T2

T3

L1

L2

L3

Output

A

Output B

Output C

Connection Diagrams

RZ3A

Fig. 1 Terminal wiring Fig. 2 Common alarm wiring

Connection specications

Relay
Mounting screws

Mounting torque
Control terminal

Mounting screws
Mounting torque
Wire size

Power terminal

Mounting screws
Mounting torque
Wire size

M5

≤ 1.5 Nm

M4

≤ 0.5 Nm

Max: 2 x 2.5 mm2 (AWG14)
Min: 2 x 1 mm

2

M5

2.5 Nm
Max: 2 x 6 mm2 (AWG8)
Min: 2 x 1 mm

2

B1

B2

B1

B2

B1

B2

A1

A2

A1

A2

A1

A2

Logic
Input

RZ3A DS ENG09/02/2017

Carlo Gavazzi LTD

9

Active Low Active High

Alarm output connection

Forward voltage ≤35 VDC
Reverse voltage ≤6 VDC
Through current ≤50mA

Alarm reset: interrupt control input for more than 20ms

RZ3A

COPYRIGHT ©2017
Content subject to change. Download the PDF: www.productselection.net

RZ3A DS ENG09/02/2017

Carlo Gavazzi LTD

10