Specifications are subject to change without notice (30.09.2005)
1
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
Solid State Relay
Number of poles
Zero switching
Rated operational voltage
Control voltage
Rated operational current
Load type
Ordering Key
Solid State Relays
Type Selection
Switching mode
Rated operational
Rated operational
Control
Non-rep.
Load
voltage
current
voltage
voltage
type
A: Zero switching
23: 230VACrms
25: 2 x 25AACrms
D: 4.5 - 32VDC
23: 650V
p
M: Inductive
40: 400VACrms
40: 2 x 40AACrms
40: 850V
p
48: 480VACrms
48: 1200V
p
60: 600VACrms
60: 1200V
p
Selection Guide
Rated operational
Non-rep. voltage
Control voltage
Rated operational current
voltage
2 x 25AACrms
2 x 40AACrms
230VACrms
650V
p
4.5 - 32VDC
RA2A23D25
RA2A23D40
RA2A23D25M
RA2A23D40M
400VACrms
850V
p
4.5 - 32VDC
RA2A40D25
RA2A40D40
RA2A40D25M
RA2A40D40M
480VACrms
1200V
p
4.5 - 32VDC
RA2A48D25
RA2A48D40
RA2A48D25M
RA2A48D40M
600VACrms
1200V
p
4.5 - 32VDC
RA2A60D25 RA2A60D40
RA2A60D25M
RA2A60D40M
Industrial, 2-Pole ZS
Type RA2A
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.
RA 2 A 48 D 25 M
Input Specifications
Control voltage range
4.5 - 32VDC
Pick-up voltage
4.25VDC
Drop-out voltage
2VDC
Input current per pole
@ max. input voltage
10mA
Response time pick-up
10ms
@ 50 Hz
Response time drop-out
10ms
@ 50 Hz
Weight
Approx. 85g
Housing material
Noryl GFN 1, black
Base plate
25, 40A
Aluminium, nickel-plated
40A (M type)
Copper, nickel-plated
FASTONTerminal size
6.3mm
Housing Specifications
2
Specifications are subject to change without notice (30.09.2005)
RA2A
Output Specifications
RA2A...25
RA2A...40
RA2A..D25M
RA2A..D40M
Rated operational current AC 51
2 x 25AACrms
2 x 40AACrms
2 x 25AACrms
2 x 40AACrms
AC 53a -
-
2 x 5AACrms
2 x 15AACrms
Minimum operational current
150mA
150mA
150mA
150mA
Non-rep. surge current t=10 ms 300A
p
390A
p
300A
p
580A
p
Off-state leakage current
<
3mA
<
3mA
<
3mA
<
3mA
I
2
t for fusing t=1-10 ms
450A
2
s
760A
2
s
450A
2
s
1680A
2
s
On-state voltage drop
@ rated current
1.6Vrms
1.6Vrms
1.6Vrms
1.6Vrms
Critical dV/dt off-state min.
500V/
s
500V/
s
500V/
s
500V/
s
Zero crossing detection
Yes
Yes
Yes
Yes
RA2A23...
RA2A40...
RA2A48...
RA2A60...
Operational voltage range
24 to 265VACrms
42 to 440VACrms
42 to 530VACrms
42 to 660VACrms
Non-rep. peak voltage
650V
p
850V
p
1200V
p
1200V
p
Rated insulation
input -output/output - heatsink 4kV
4kV
4kV
4kV
Operational frequency range
45 to 65Hz
45 to 65Hz
45 to 65Hz
45 to 65Hz
LED ON indication (x2)
Yes (green)
Yes (green)
Yes (green)
Yes (green)
Power factor
RA2A
0.95 @ 230VAC
0.95 @ 400VAC
0.95 @ 480VAC
0.95 @ 600VAC
RA2A..M
0.50 @ 230VAC
0.50 @ 400VAC
0.50 @ 480VAC
0.50 @ 600VAC
Zero voltage turn-on
< 15V
< 15V
< 15V
< 15V
Approvals
UL,
c
UL, CSA
UL,
c
UL, CSA
UL,
c
UL, CSA
UL,
c
UL, CSA
CE-marking
Yes
Yes
Yes
Yes
Conformance
VDE
VDE
VDE
VDE
General Specifications
Functional Diagram
Dimensions
All dimensions in mm
Specifications are subject to change without notice (30.09.2005)
3
0.68
0.56
0.44
0.32
0.19
0.07
82
0.87
0.73
0.59
0.45
0.31
0.17
72
1.10
0.94
0.78
0.62
0.45
0.29
62
1.41
1.22
1.03
0.83
0.64
0.45
52
1.8
1.6
1.36
1.13
0.90
0.67
43
2.3
2.0
1.7
1.4
1.1
0.86
35
3.0
2.6
2.2
1.9
1.5
1.11
27
4
4
3
2.6
2.0
1.5
20
6
6
5
4
3
2.4
13
13
12
10
8
7
5
6
20
30
40
50
60
70
RA2A
Heatsink Dimensions
(load current versus ambient temperature)
RA 2....25/25M
T
A
Ambient temp. [
C]
50
45
40
35
30
25
20
15
10
5
Power
dissipation [W]
Thermal resistance
[K/W]
Load
current [A]
1.11
0.94
0.78
0.62
0.46
0.29
62
1.36
1.17
0.99
0.80
0.61
0.43
54
1.68
1.47
1.25
1.03
0.81
0.60
46
2.06
1.80
1.54
1.29
1.03
0.77
39
2.5
2.2
1.87
1.56
1.25
0.94
32
3.1
2.7
2.3
1.9
1.6
1.17
26
4.0
3.5
3.0
2.5
2.0
1.52
20
6
5
4
3.5
2.8
2.1
14
9
8
7
6
4
3.3
9
18
16
14
12
9
7
4
20
30
40
50
60
70
RA 2....40
T
A
Ambient temp. [
C]
80
72
64
56
48
40
32
24
16
8
Power
dissipation [W]
Thermal resistance
[K/W]
Load
current [A]
Carlo Gavazzi Heatsink
Thermal
...for power
(see Accessories)
resistance... dissipation
No heatsink required
---
N/A
RHS 300
5.00K/W
> 0 W
RHS 100
3.00K/W
> 25 W
RHS 45C
2.70K/W
> 60 W
RHS 45B
2.00K/W
> 60 W
RHS 90A
1.35K/W
> 60 W
RHS 45A plus fan
1.25K/W
> 0 W
RHS 45B plus fan
1.20K/W
> 0 W
RHS 112A
1.10K/W
> 100 W
RHS 301
0.80K/W
> 70 W
RHS 90A plus fan
0.45K/W
> 0 W
RHS 112A plus fan
0.40K/W
> 0 W
RHS 301 plus fan
0.25K/W
> 0 W
Consult your distribution > 0.25K/W
N/A
Infinite heatsink - No solution
---
N/A
Heatsink Selection
RA 2....40M
T
A
Ambient temp. [
C]
100
90
80
70
60
50
40
30
20
10
5
Power
dissipation [W]
Thermal resistance
[K/W]
Load
current [A]
0.41
0.32
0.23
0.13
0.04
-
108
0.55
0.44
0.34
0.23
0.13
0.02
95
0.72
0.60
0.48
0.35
0.23
0.11
82
0.95
0.80
0.66
0.52
0.37
0.23
70
1.25
1.08
0.90
0.73
0.56
0.39
58
1.7
1.5
1.25
1.04
0.83
0.61
47
2.2
1.9
1.6
1.4
1.1
0.82
36
3
2.7
2.3
1.9
1.5
1.14
26
5
4
4
2.9
2.3
1.8
17
10
9
7
6
5
3.6
8
20
17
15
12
10
7
4
20
30
40
50
60
70
Accessories
Heatsinks
DIN rail adapter
Varistors
Fuses
For further information refer
to "General Accessories".
Rated insulation voltage
4000VACrms
Input to output
Rated insulation voltage
4000VACrms
Output to case
Insulation
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.
4
Specifications are subject to change without notice (30.09.2005)
RA2A
Applications
Heat flow
Heatsink
temperature
R
th
j-c
R
th
c-s
R
th
s-a
Junction
temperature
Case
temperature
Ambient
temperature
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.
R
th
c-s = case to heatsink
R
th
s-a = heatsink to ambient
Thermal resistance:
R
th
j-c = junction to case
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.
Thermal Specifications
RA2A...25.
RA2A...40 RA2A...40M
Operating temperature
-20 to 70C
-20 to 70C
-20 to 70C
Storage temperature
-20 to 80C
-20 to 80C
-20 to 80C
Junction temperature
125C
125C
125C
R
th
junction to case
1 pole
1K/W
1K/W
0.92K/W
2 pole
0.5K/W
0.5K/W
0.46K/W
R
th
junction to ambient
20K/W
20K/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.
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