Specifications are subject to change without notice (30.06.1999)
1
RA 23... -D06D
RA 40... -D08D
RA 48...-D12D
RA 60... -D16D
Operational voltage range
24 to 280 VACrms
42 to 440 VACrms
42 to 530 VACrms
42 to 660 VACrms
Non-rep. peak voltage
650 V
p
850 V
p
1200 V
p
1600 V
p
Varistor voltage
275 VACrms
420 VACrms
510 VACrms
680 VACrms
Zero voltage turn-on
< 20 V
< 20 V
< 20 V
< 20 V
Operational frequency range
45 to 65 Hz
45 to 65 Hz
45 to 65 Hz
45 to 65 Hz
Power factor
> 0.5
> 0.5
> 0.5
> 0.5
CE-marking
Yes
Yes
Yes
Yes
Norm fulfilled
EN 50082-2
EN 50082-2
EN 50082-2
EN 50082-2
Rated opera-
Non-rep. Control
Rated operational current
tional voltage voltage
voltage
10 AAC
25 AAC
50 AAC
90 AAC
110 AAC
230 VACrms
650 V
p
5 - 32 VDC RA2310-D06D RA2325-D06D RA2350-D06D RA2390-D06D RA23110-D06D
400 VACrms
850 V
p
5 - 32 VDC RA4010-D08D RA4025-D08D RA4050-D08D RA4090-D08D RA40110-D08D
480 VACrms
1200 V
p
5 - 32 VDC RA4810-D12D RA4825-D12D RA4850-D12D RA4890-D12D RA48110-D12D
600 VACrms
1600 V
p
5 - 32 VDC -
-
RA6050-D16D RA6090-D16D RA60110-D16D
Zero switching AC Solid State Relay
Direct copper bonding (DCB) technology
LED indication
Built-in varistor
Input range: 5 - 32 VDC
Rated operational current: 10, 25, 50, 90 and
110 AACrms
Rated operational voltage: 230, 400, 480 and
600 VACrms
Non-repetitive voltage: Up to 1600 V
p
Opto-insulation: > 4000 VACrms
Cover for touch protection
Product Description
The zero switching relay with
antiparallel thyristor output is
the most widely used indus-
trial SSR due to its multiple
application possibilities. The
relay can be used for resis-
tive, inductive and capacitive
loads. The zero switching
relay switches ON when the
sinusoidal curve crosses zero
Solid State Relay
Switching mode
Rated operational voltage
Rated operational current
Control voltage
Non-rep. peak voltage
LED indication
Ordering Key
Solid State Relays
and switches OFF when the
current crosses zero. The
built-in varistor secure transi-
ent protection for the heavy
industrial applications and
the LED indicates the status
of the control input. The
cover is securing touch pro-
tection.
Type Selection
Switching mode
Rated operational
Rated operational
Control voltage
Non-rep. voltage
voltage
current
A: Zero Switching
23: 230 VACrms
10: 10 AACrms
-D: 5 to 32 VDC
06: 650 V
p
40: 400 VACrms
25: 25 AACrms
08: 850 V
p
48: 480 VACrms
50: 50 AACrms
12: 1200 V
p
60: 600 VACrms
90: 90 AACrms
16: 1600 V
p
110: 110 AACrms
Selection Guide
Industrial, 1-Phase ZS w. LED and Built-in Varistor
Types RA 23, RA 40, RA 48, RA 60
RA 23 25 -D 06 D
General Specifications
2
Specifications are subject to change without notice (30.06.1999)
Rated insulation voltage
Input to output
4000 VACrms
Rated insulation voltage
Output to case
4000 VACrms
Insulation
Wiring Diagram
Functional Diagram
Control
input
Mains input/load output
Control
input
Load output/mains input
RA 23, RA 40, RA 48, RA 60
Output Specifications
Thermal Specifications
Accessories
Heatsinks
DIN-rail adapter
Fuses
For further information refer
to "General Accessories".
Input Specifications
Input current @ 24 VDC
< 10 mA
Response time pick-up
< 10 ms
Response time drop-out
< 20 ms
Green LED indication
Yes
Control voltage range
(-10% to +10%)
5 to 32 VDC
Pick-up voltage
4.5 VDC
Drop-out voltage
1 VDC
RA ..10 -D..D
RA ..25 -D..D
RA ..50 -D..D
RA ..90 -D..D
RA ..110 -D..D
Rated operational current AC1 10 AACrms
25 AACrms
50 AACrms
90 AACrms
110 AACrms
AC3 3 AACrms
5 AACrms
15 AACrms
20 AACrms
30 AACrms
Minimum operational current
200 mA
200 mA
200 mA
200 mA
200 mA
Rep. overload current (t = 1 s)
< 35 AACrms
< 55 AACrms
< 125 AACrms
< 150 AACrms
< 200 AACrms
Non-rep surge current (t = 20 ms) 160 A
p
250 A
p
600 A
p
1000 A
p
1500 A
p
Off-state leakage current at
rated voltage and frequency
< 6 mA
< 6 mA
< 6 mA
< 6 mA
< 6 mA
I
2
t for fusing (t = 10 ms)
130 A
2
s
310 A
2
s
1800 A
2
s
5000 A
2
s
11250 A
2
s
Critical dI/dt
100 A/s
100 A/s
100 A/s
100 A/s
100 A/s
On-state voltage drop
at rated current
< 1.6 Vrms
< 1.6 Vrms
< 1.6 Vrms
< 1.6 Vrms
< 1.6 Vrms
Critical dV/dt
500 V/s
500 V/s
500 V/s
500 V/s
500 V/s
Zero crossing detection
Yes
Yes
Yes
Yes
Yes
RA ..10 -D..D
RA ..25 -D..D
RA ..50 -D..D
RA ..90 -D..D
RA ..110 -D..D
Operating temperature range
-20 to +70C
-20 to +70C
-20 to +70C
-20 to +70C
-20 to +70C
(-4 to +158F)
(-4 to +158F)
(-4 to +158F)
(-4 to +158F)
(-4 to +158F)
Storage temperature range
-40 to +100C
-40 to +100C
-40 to +100C
-40 to +100C
-40 to +100C
(-40 to +212F)
(-40 to +212F)
(-40 to +212F)
(-40 to +212F)
(-40 to +212F)
Junction temperature
< 125C (< 257F)
< 125C (< 257F)
< 125C (< 257F)
< 125C (< 257F)
< 125C (< 257F)
R
th
junction to case
2.0 K/W
1.25 K/W
0.65 K/W
0.35 K/W
0.30 K/W
R
th
junction to ambient
12 K/W
12 K/W
12 K/W
12 K/W
12 K/W
Specifications are subject to change without notice (30.06.1999)
3
45.5 **
5.3
2xM5
LED
2xM3
12
13 **
30 ***
24.5 ***
58.2 ***
47.5 ***
10
66.8 ***
35.5 ***
APPLY
HEATSINK
COMPOUND
RA 23, RA 40, RA 48, RA 60
Dimensions
Weight
Approx. 110 g
Housing material
Noryl GFN 1, black
Base plate
10 A, 25 A, 50 A
Aluminium, nickel-plated
90 A, 110 A
Copper, nickel-plated
Potting compound
Polyurethane
Relay
Mounting screws
M5
Mounting torque
1.5 Nm
Control terminal
Mounting screws
M3 x 6
Mounting torque
0.5 Nm
Power terminal
Mounting screws
M5 x 6
Mounting torque
2.4 Nm
Housing Specifications
** =
0.4 mm
*** =
0.5 mm
Applications
Thermal characteristics
The thermal design of Solid
State Relays is very impor-
tant. It is essential that the user
makes sure that cooling is ad-
equate and that the maximum
junction temperature of the re-
lay is not exceeded.
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.
Heat flow
Heatsink
temperature
R
th
j-c
R
th
c-s
R
th
s-a
Junction
temperature
Case
temperature
Ambient
temperature
Thermal resistance:
R
th
j-c = junction to case
Direct bonding
In the design of the output
power semiconductor direct
bonding of the copper layer
and the ceramic substrate has
been applied. This is to en-
sure uninhibited heat transfer
and high thermal fatigue
strength.
The relay has been designed
for applications requiring large
numbers of load cycles.
Power dissipation
The power dissipation for in-
termittent use is calculated ac-
cording to the following for-
mula:
t
on
t
off
OFF
ON
I
rms
=
I
ON
2
x t
ON
t
ON
+ t
OFF
Ex: RA 23 50 -D 06D:
Load current = 45 A
t
ON
= 30 s
t
OFF
= 15 s
I
rms
=
45
2
x 30
30 + 15
The rms current will be
36.7 A.
If the heatsink is placed in a
small closed room, control
panel or the like, the power
dissipation can cause the
ambient temperature to rise.
The heatsink is to be cal-
culated on the basis of the
ambient temperature and the
increase in temperature.
R
th
c-s = case to heatsink
R
th
s-a = heatsink to ambient
4
Specifications are subject to change without notice (30.06.1999)
0.63
0.53
0.42
0.32
-
-
97
0.81
0.69
0.57
0.45
0.33
-
84
1
0.89
0.75
0.61
0.47
0.33
71
1.3
1.2
1
0.83
0.66
0.49
59
1.7
1.5
1.3
1.1
0.85
0.64
47
2.2
1.9
1.7
1.4
1.1
0.83
36
3.1
2.7
2.3
1.9
1.5
1.2
26
4.8
4.2
3.6
3
2.4
1.8
17
10
8.8
7.5
6.3
5
3.8
8
20
30
40
50
60
70
90
80
70
60
50
40
30
20
10
0.92
0.76
0.60
0.45
0.29
- 63
1.2
0.99
0.80
0.62
0.44
0.26
55
1.5
1.3
1.1
0.85
0.63
0.42
47
1.9
1.6
1.4
1.1
0.89
0.63
40
2.4
2.1
1.8
1.5
1.2
0.91
33
3
2.7
2.3
1.9
1.5
1.1
26
3.9
3.5
3
2.5
2
1.5
20
5.5
4.8
4.1
3.4
2.7
2.1
15
8.6
7.5
6.4
5.4
4.3
3.2
9
17.9
15.6
13.4
11.2
8,9
6.7
4
20
30
40
50
60
70
0.43
0.35
0.27
-
-
-
126
0.63
0.53
0.42
0.32
-
-
97
0.81
0.69
0.57
0.45
0.33
-
84
1
0.89
0.75
0.61
0.47
0.33
71
1.3
1.2
1
0.83
0.66
0.49
59
1.7
1.5
1.3
1.1
0.85
0.64
47
2.2
1.9
1.7
1.4
1.1
0.83
36
3.1
2.7
2.3
1.9
1.5
1.2
26
4.8
4.2
3.6
3
2.4
1.8
17
10
8.8
7.5
6.3
5
3.8
8
20
30
40
50
60
70
RA 23, RA 40, RA 48, RA 60
Heatsink Dimensions
(load current versus ambient temperature)
RA ..50 -D..D
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]
Thermal resistance
[K/W]
Load
current [A]
Power
dissipation [W]
T
A
Ambient temp. [
C]
Thermal resistance
[K/W]
Load
current [A]
Power
dissipation [W]
RA ..110 -D..D
T
A
Ambient temp. [
C]
110
90
80
70
60
50
40
30
20
10
RA ..90 -D..D
2.7
2.2
1.8
1.3
0.87
0.41
22
3.1
2.6
2.1
1.7
1.2
0.65
20
3.7
3,1
2.6
2
1.5
0.92
18
4.3
3.7
3.1
2.5
1.9
1.2
16
5
4.3
3.7
3
2.3
1.6
15
5.9
5.1
4.4
3.6
2.8
2.1
13
6.9
6
5.2
4.3
3.5
2.6
12
7.9
6.9
5.9
4.9
4
3
10
10.8
9.5
8.1
6.8
5.4
4.1
7
-
14.2
12.2
10.2
8.1
6.1
5
-
-
-
-
14.6
10.9
3
20
30
40
50
60
70
16
15
14
13
12
11
10
9
7
5
3
Load
current [A]
Thermal resistance
[K/W]
T
A
Ambient temp. [
C]
Power
dissipation [W]
Power
dissipation [W]
2
1.7
1.4
1
0.71
0.40 32
2.5
2.1
1.8
1.4
1
0.66
27
3.1
2.7
2.3
1.9
1.4
1
23
4.
3.5
3
2.5
2
1.4
20
4.9
4.3
3.7
3.1
2.5
1.9
16
6.2
5.4
4.6
3.9
3.1
2.3
13
8.1
7.1
6.1
5.1
4
3
10
11.3
9.9
8.5
7.1
5.6
4.2
7
-
15.6
13.3
11.1
8.9
6.7
5
-
-
-
-
18.7
14
2
20
30
40
50
60
70
25
22.5
20
17.5
15
12.5
10
7.5
5
2.5
T
A
Ambient temp. [
C]
Load
current [A]
Thermal resistance
[K/W]
RA ..10 -D..D
RA ..25 -D..D
Carlo Gavazzi Heatsink
(see Accessories)
No heatsink required
RHS 100 Assy
RHS 301 Assy
RHS 301 F Assy
Consult your distributor
Heatsink Selection
Thermal resistance
R
th s-a
> 12.5
K/W
3.0 K/W
0.8 K/W
0.25 K/W
< 0.25 K/W
Compare the value found in the current versus temperature
chart with the standard heatsink values and select the heat-
sink with the next lower value.
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