Solid State Relays
Industrial, 2-Pole ZS
Type RA2A
•
2-Pole AC Solid State Relay
•
Zero switching
•
For resistive and inductive AC loads
•
Direct copper bonding (DCB) technology
•
LED indication
•
Rated operational current: 2 x 25 and 2 x 40AACrms
•
Rated operational voltage: 230 - 600VACrms
•
Input range: 4.5 - 32VDC
•
Non-repetitive peak voltage: Up to 1200Vp
•
Opto-isolation: 4000VACrms
Product Description
This 2-pole industrial relay
minimises the space require-
ments in a control cabinet
without compromising perfor-
mance. By applying an input
voltage on control A, the corre-
sponding output semicondcu-
tor is activated at the first zero
crossing
of
the
line
voltage.The same applies to
control B. LEDs indicate the
control status of each pole.
The optimised design is free of
moulding mass to reduce inter-
nal mechanical stress.
The RA2A..M types have been
specially
customised
for
demanding inductive loads.
Ordering Key
Solid State Relay
Number of poles
Zero switching
Rated operational voltage
Control voltage
Rated operational current
Load type
RA 2 A 48 D 25 M
Type Selection
Switching mode
A: Zero switching
Rated operational
voltage
23:
40:
48:
60:
230VACrms
400VACrms
480VACrms
600VACrms
Rated operational
current
25: 2 x 25AACrms
40: 2 x 40AACrms
Control
voltage
D: 4.5 - 32VDC
Non-rep.
voltage
23: 650V
p
40: 850V
p
48: 1200V
p
60: 1200V
p
Load
type
M: Inductive
Selection Guide
Rated operational
voltage
230VACrms
400VACrms
480VACrms
600VACrms
Non-rep. voltage
650V
p
850V
p
1200V
p
1200V
p
Control voltage
4.5 - 32VDC
4.5 - 32VDC
4.5 - 32VDC
4.5 - 32VDC
Rated operational current
2 x 25AACrms
2 x 40AACrms
RA2A23D25
RA2A23D25M
RA2A40D25
RA2A40D25M
RA2A48D25
RA2A48D25M
RA2A60D25
RA2A60D25M
RA2A23D40
RA2A23D40M
RA2A40D40
RA2A40D40M
RA2A48D40
RA2A48D40M
RA2A60D40
RA2A60D40M
Input Specifications
Control voltage range
Pick-up voltage
Drop-out voltage
Input current per pole
@ max. input voltage
Response time pick-up
@ 50 Hz
Response time drop-out
@ 50 Hz
4.5 - 32VDC
4.25VDC
2VDC
≤10mA
≤10ms
≤10ms
Housing Specifications
Weight
Housing material
Base plate
25, 40A
40A (M type)
FASTONTerminal size
Approx. 85g
Noryl GFN 1, black
Aluminium, nickel-plated
Copper, nickel-plated
6.3mm
Specifications are subject to change without notice (30.09.2005)
1
RA2A
General Specifications
RA2A23...
Operational voltage range
Non-rep. peak voltage
Rated insulation
input -output/output - heatsink
Operational frequency range
LED ON indication (x2)
Power factor
RA2A
RA2A..M
Zero voltage turn-on
Approvals
CE-marking
Conformance
24 to 265VACrms
650V
p
4kV
45 to 65Hz
Yes (green)
≥
0.95 @ 230VAC
≥
0.50 @ 230VAC
< 15V
UL,
c
UL, CSA
Yes
VDE
RA2A40...
42 to 440VACrms
850V
p
4kV
45 to 65Hz
Yes (green)
≥
0.95 @ 400VAC
≥
0.50 @ 400VAC
< 15V
UL,
c
UL, CSA
Yes
VDE
RA2A48...
42 to 530VACrms
1200V
p
4kV
45 to 65Hz
Yes (green)
≥
0.95 @ 480VAC
≥
0.50 @ 480VAC
< 15V
UL,
c
UL, CSA
Yes
VDE
RA2A60...
42 to 660VACrms
1200V
p
4kV
45 to 65Hz
Yes (green)
≥
0.95 @ 600VAC
≥
0.50 @ 600VAC
< 15V
UL,
c
UL, CSA
Yes
VDE
Output Specifications
RA2A...25
Rated operational current AC 51
AC 53a
Minimum operational current
Non-rep. surge current t=10 ms
Off-state leakage current
I
2
t for fusing t=1-10 ms
On-state voltage drop
@ rated current
Critical dV/dt off-state min.
Zero crossing detection
2 x 25AACrms
-
150mA
300A
p
<
3mA
450A
2
s
≤
1.6Vrms
500V/µs
Yes
RA2A...40
2 x 40AACrms
-
150mA
390A
p
<
3mA
760A
2
s
≤
1.6Vrms
500V/µs
Yes
RA2A..D25M
2 x 25AACrms
2 x 5AACrms
150mA
300A
p
<
3mA
450A
2
s
≤
1.6Vrms
500V/µs
Yes
RA2A..D40M
2 x 40AACrms
2 x 15AACrms
150mA
580A
p
<
3mA
1680A
2
s
≤
1.6Vrms
500V/µs
Yes
Functional Diagram
Dimensions
All dimensions in mm
2
Specifications are subject to change without notice (30.09.2005)
RA2A
Heatsink Dimensions
RA 2....25/25M
Load
current [A]
(load current versus ambient temperature)
RA 2....40
Thermal resistance
[K/W]
Power
dissipation [W]
Load
current [A]
Thermal resistance Power
dissipation [W]
[K/W]
50
45
40
35
30
25
20
15
10
5
1.11
1.36
1.68
2.06
2.5
3.1
4.0
6
9
18
20
0.94
1.17
1.47
1.80
2.2
2.7
3.5
5
8
16
30
0.78
0.99
1.25
1.54
1.87
2.3
3.0
4
7
14
40
0.62
0.80
1.03
1.29
1.56
1.9
2.5
3.5
6
12
50
0.46
0.61
0.81
1.03
1.25
1.6
2.0
2.8
4
9
60
0.29
0.43
0.60
0.77
0.94
1.17
1.52
2.1
3.3
7
70
62
54
46
39
32
26
20
14
9
4
T
A
80
72
64
56
48
40
32
24
16
8
0.68
0.87
1.10
1.41
1.8
2.3
3.0
4
6
13
20
0.56
0.73
0.94
1.22
1.6
2.0
2.6
4
6
12
30
0.44
0.59
0.78
1.03
1.36
1.7
2.2
3
5
10
40
0.32
0.45
0.62
0.83
1.13
1.4
1.9
2.6
4
8
50
0.19
0.31
0.45
0.64
0.90
1.1
1.5
2.0
3
7
60
0.07
0.17
0.29
0.45
0.67
0.86
1.11
1.5
2.4
5
70
T
A
82
72
62
52
43
35
27
20
13
6
Ambient temp. [°C]
Ambient temp. [°C]
RA 2....40M
Load
current [A]
Thermal resistance
[K/W]
Power
dissipation [W]
Heatsink Selection
Carlo Gavazzi Heatsink
Thermal
(see Accessories)
resistance...
No heatsink required
---
RHS 300
5.00K/W
RHS 100
3.00K/W
RHS 45C
2.70K/W
RHS 45B
2.00K/W
RHS 90A
1.35K/W
RHS 45A plus fan
1.25K/W
RHS 45B plus fan
1.20K/W
RHS 112A
1.10K/W
RHS 301
0.80K/W
RHS 90A plus fan
0.45K/W
RHS 112A plus fan
0.40K/W
RHS 301 plus fan
0.25K/W
Consult your distribution
> 0.25K/W
Infinite heatsink - No solution
---
...for power
dissipation
N/A
>0W
> 25 W
> 60 W
> 60 W
> 60 W
>0W
>0W
> 100 W
> 70 W
>0W
>0W
>0W
N/A
N/A
100
90
80
70
60
50
40
30
20
10
5
0.41
0.55
0.72
0.95
1.25
1.7
2.2
3
5
10
20
20
0.32
0.44
0.60
0.80
1.08
1.5
1.9
2.7
4
9
17
30
0.23
0.34
0.48
0.66
0.90
1.25
1.6
2.3
4
7
15
40
0.13
0.23
0.35
0.52
0.73
1.04
1.4
1.9
2.9
6
12
50
0.04
0.13
0.23
0.37
0.56
0.83
1.1
1.5
2.3
5
10
60
-
0.02
0.11
0.23
0.39
0.61
0.82
1.14
1.8
3.6
7
70
108
95
82
70
58
47
36
26
17
8
4
T
A
Ambient temp. [°C]
Note: Add the currents of both poles and compare with datasheets for proper heatsink.
Each pole can handle up to the maximum current specified. Example: Each pole of the RA2A23D25 can handle a maximum of 25 A.
Insulation
Rated insulation voltage
Input to output
Rated insulation voltage
Output to case
≥
4000VACrms
≥
4000VACrms
Accessories
Heatsinks
DIN rail adapter
Varistors
Fuses
For further information refer
to "General Accessories".
Specifications are subject to change without notice (30.09.2005)
3
RA2A
Applications
This relay is designed for use
in applications in which it is
exposed to high surge condi-
tions. Care must be taken to
ensure proper heatsinking
when the relay is to be used at
high sustained currents. Ade-
quate electrical connection
between relay terminals and
cable must be ensured.
Thermal characteristics
The thermal design of Solid
State Relays is very important.
It is essential that the user
makes sure that cooling is ad-
equate and that the maximum
junction temperature of the
relay is not exceeded.
If the heatsink is placed in a
small closed room, control panel
or the like, the power dissipation
can cause the ambient tem-
perature to rise. The heatsink
is to be calculated on the basis
of the ambient temperature and
the increase in temperature.
R
th
j-c
Junction
temperature
Heat flow
R
th
c-s
Case
temperature
R
th
s-a
Heatsink
temperature
Ambient
temperature
Thermal resistance:
R
th
j-c = junction to case
R
th
c-s = case to heatsink
R
th
s-a = heatsink to ambient
Thermal Specifications
RA2A...25.
Operating temperature
Storage temperature
Junction temperature
R
th
junction to case
1 pole
2 pole
R
th
junction to ambient
-20° to 70°C
-20° to 80°C
≤
125°C
1K/W
0.5K/W
≤
20K/W
RA2A...40
-20° to 70°C
-20° to 80°C
≤
125°C
1K/W
0.5K/W
≤
20K/W
RA2A...40M
-20° to 70°C
-20° to 80°C
≤
125°C
0.92K/W
0.46K/W
≤
20K/W
Applications
A single two pole relay in a three phase application.
Star and Delta (Economy switch)
A two pole relay and a single pole relay connected on a
three phase application. Delta, star and star with a neu-
tral point.
4
Specifications are subject to change without notice (30.09.2005)
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