Solid State Relays
Industrial, 1-Phase ZS (IO) w. LED
Types RAM1A, RAM1B
• Zero switching (RAM1A) or instant-on
switching (RAM1B) AC Solid State Relay
• Direct copper bonding (DCB) technology
• LED indication
• Clip-on IP 20 protection cover
• Self-lifting terminals
• Housing free of moulding mass
• 2 input ranges: 3-32 * and 20-280 VAC/22-48VDC
• Operational ratings: Up to 125AACrms and 600VACrms
• Blocking voltage: Up to 1600V
p
• Opto-isolation: > 4000VACrms
• Integrated overvoltage protection by self
switching (suffix “Z” option)
Product Description
The industrial, 1-phase relay
with antiparallel thyristor out-
put is the most widely used
industrial SSR due to its mul-
tiple application possibilities.
The relay can be used for
resistive,
inductive
and
capacitive loads. The zero
switching relay switches ON
when the sinusoidal curve
crosses zero and switches
OFF when the current cross-
es zero. The instant-on relay
with DC control input can be
used for phase angle control.
The built-in snubber secures
transient protection. The LED
indicates the status of the
control input. The clip-on cov-
er secures touch protection
(IP 20). Protected output ter-
minals can handle cables up
to 16 mm
2
.
Ordering Key
Solid State Relay
Number of poles
Switching mode
Rated operational voltage
Control voltage
Rated operational current
Options
RAM 1 A 60 D 125 Z
Type Selection
Switching mode
A: Zero Switching
B: Instant-on switching
(DC Control only)
Rated operational
voltage
23: 230VACrms
60: 600VACrms
69: 690VACrms
Control voltage
A: 20-280 VAC/22-48VDC
D: 3 - 32VDC*
* 4 to 32VDC for RAM1A60..., RAM1A69...
* 4 to 32VDC for RAM1B types
Rated operational
current
25 : 25AACrms
50 : 50AACrms
75 : 75AACrms
100:100AACrms
125:125AACrms
Options
Z: Overvoltage
protection (self-
switching)
Selection Guide
Rated
operational
voltage
230VACrms
600VACrms
690VACrms
Blocking
voltage
Control
voltage
Rated operational current
25A
50A
75A
100A
125A
650V
p
1200V
p
1600V
p
3 - 32VDC
20-280VAC/22-48VDC
4 - 32VDC
20-280VAC/22-48VDC
4-32VDC
20-280VAC/ 22-48VDC
RAM1A23D25 RAM1A23D50 RAM1A23D75 RAM1A23D100 RAM1A23D125
RAM1A23A25 RAM1A23A50 RAM1A23A75 RAM1A23A100 RAM1A23A125
RAM1A60D25 RAM1A60D50 RAM1A60D75 RAM1A60D100 RAM1A60D125
RAM1A60A25 RAM1A60A50 RAM1A60A75 RAM1A60A100 RAM1A60A125
-
-
RAM1A69D75 RAM1A69D100 RAM1A69D125
-
-
RAM1A69A75 RAM1A69A100 RAM1A69A125
Options
1
Overvoltage protection by self-switching: add suffix Z to include. Example: RAM1A60D25Z. Not applicable for 690V version.
Specifications are subject to change without notice (28.02.2007)
1
RAM1A, RAM1B
General Specifications
RAM1.23..
Operational voltage range
RAM1A...
RAM1B...
Blocking voltage
Zero voltage turn-on
Operational frequency range
Power factor
Approvals
CE-marking
* VDE0805
** Heatsink must be conected to ground
RAM1.60..
RAM1.69..
24 to 265VACrms
42 to 265VACrms
≥
650V
p
≤
10V
45 to 65Hz
> 0.5 @ 230VACrms
UL, cUL, CSA, VDE*
Yes
42 to 660VACrms
42 to 660VACrms
≥
1200V
p
≤
10V
45 to 65Hz
> 0.5 @ 600VACrms
UL, cUL, CSA, VDE*
Yes**
42 to 760VACrms
42 to 760VACrms
≥
1600V
p
≤
10V
45 to 65Hz
> 0.5 @ 690VACrms
-
Yes**
Input Specifications
RAM1...D..
Control voltage range
RAM1A23...
RAM1A60..., RAM1A69...
RAM1B...
Pick-up voltage @ Ta = 25˚C
RAM1A23...
RAM1A60..., RAM1A69...
RAM1B...
Reverse voltage
Drop out voltage
Input current @ max input voltage
RAM1A
RAM1B
Response time pick-up
RAM1A
RAM1B
Response time drop-out
RAM1...A..
3-32VDC
4-32VDC
4-32VDC
2.5VDC
3.5VDC
3.5VDC
32VDC
1.2VDC
≤
12mA
≤
15mA
≤
1/2 cycle
≤
0.1ms
≤
1/2 cycle
20-280VAC, 22-48VDC
20-280VAC, 22-48VDC
-
18VAC/DC
18VAC/DC
-
-
6VAC/DC
≤
20mA
-
≤
12ms
-
≤
40ms
Output Specifications
RAM1...25
Rated operational current
AC51 @ Ta=25°C
AC53a @ Ta=25°C
Min. operational current
Rep. overload current t=1 s
Non-rep. surge current t=10 ms
Off-state leakage current @
rated voltage and frequency
I
2
t for fusing t= 10 ms
On-state voltage drop
Critical dV/dt off-state min.
25Arms
5Arms
150mA
< 55AACrms
325A
p
< 3mArms
< 520A
2
s
≤
1.6Vrms
1000V/µs
RAM...50
50Arms
15Arms
250mA
< 125AACrms
600A
p
< 3mArms
< 1800A
2
s
≤
1.6Vrms
1000V/µs
RAM1...75
75Arms
17Arms
400mA
< 130 AACrms
800A
p
< 3mArms
< 3200A
2
s
≤
1.6Vrms
1000V/µs
RAM1...100
100Arms
20Arms
400mA
< 150 AACrms
1150A
p
< 3mArms
< 6600A
2
s
≤
1.6Vrms
1000V/µs
RAM...125
125Arms
30Arms
500mA
< 200AACrms
1900A
p
< 3mArms
<18000A
2
s
≤
1.6Vrms
1000V/µs
2
Specifications are subject to change without notice (28.02.2007)
RAM1A, RAM1B
Housing Specifications
Weight
25A, 50A
75A, 100A, 125A
Housing material
Baseplate
25A, 50A
75A, 100A, 125A
Approx. 60g
Approx. 100g
Noryl, black
Aluminium
Copper, nickel-plated
Relay
Mounting screws
Mounting torque
Control terminal
Mounting screws
Mounting torque
Power terminal
Mounting screws
Mounting torque
M5
1.5-2.0Nm
M3 x 9
0.5Nm
M5 x 9
2.4Nm
Functional Diagram
Dimensions
+
A1
(
~
)
REGULATION
T1
ZC
IO
-
A2(~ )
L1
LED
APPLY
HEATSINK
COMPOUND
All dimensions in mm.
Heatsink Dimensions
RAM..25
Load
current [A]
Thermal resistance
[K/W]
(load current versus ambient temperature)
RAM..50
Power
dissipation [W]
Load
current [A]
Thermal resistance
[K/W]
Power
dissipation [W]
25.0
22.5
20.0
17.5
15.0
12.5
10.0
7.5
5.0
2.5
3.23
3.70
4.30
5.07
6.12
7.58
9.80
2.80
3.21
3.74
4.41
5.33
6.61
8.55
2.37
2.73
3.17
3.76
4.54
5.64
7.30
1.94
2.24
2.61
3.10
3.75
4.66
6.05
1.51
1.75
2.05
2.44
2.96
3.69
4.80
6.66
1.09
1.26
1.49
1.78
2.17
2.72
3.55
4.94
0.66
0.78
0.92
1.12
1.38
1.75
2.30
3.23
5.09
10.7
80
23
21
18
15
13
10
8
6
4
2
T
A
50.0
45.0
40.0
35.0
30.0
25.0
20.0
15.0
10.0
5.0
1.25
1.46
1.73
2.08
2.56
3.24
4.26
5.99
9.49
-
20
1.07
1.25
1.49
1.80
2.22
2.81
3.71
5.22
8.27
17.5
30
0.88
1.04
1.25
1.51
1.87
2.38
3.15
4.45
7.06
15.0
40
0.70
0.84
1.01
1.23
1.53
1.95
2.59
3.67
5.85
12.4
50
0.52
0.63
0.77
0.94
1.18
1.52
2.03
2.90
4.64
9.91
60
0.34
0.42
0.52
0.66
0.84
1.09
1.47
2.12
3.43
7.39
70
0.16
0.21
0.28
0.37
0.49
0.66
0.92
1.35
2.22
4.86
80
55
48
41
35
29
23
18
13
8
4
T
A
13.5 11.80 10.09 8.37
-
-
20
18.3
-
30
15.7 13.04 10.39 7.74
-
40
-
50
-
60
16.2
70
Ambient temp. [°C]
Ambient temp. [°C]
Specifications are subject to change without notice (28.02.2007)
3
RAM1A, RAM1B
Heatsink Dimensions (cont.)
RAM..75
Load
current [A]
Thermal resistance
[K/W]
Power
dissipation [W]
RAM..100
Load
current [A]
Thermal resistance
[K/W]
Power
dissipation [W]
75.0
67.5
60.0
52.5
45.0
37.5
30.0
22.5
15.0
7.5
0.94
1.10
1.30
1.57
1.95
2.48
3.32
4.75
7.68
-
20
0.82
0.96
1.14
1.38
1.70
2.17
2.90
4.15
6.72
0.70
0.82
0.98
1.18
1.46
1.86
2.49
3.56
5.76
0.58
0.69
0.81
0.98
1.22
1.55
2.07
2.97
4.80
0.47
0.55
0.65
0.79
0.97
1.24
1.66
2.37
3.84
0.35
0.41
0.49
0.59
0.73
0.93
1.24
1.78
2.88
6.25
70
0.23
0.27
0.33
0.39
0.49
0.62
0.83
1.19
1.92
4.17
80
85
73
61
51
41
32
24
17
10
5
T
A
100.0 0.60
90.0
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.74
0.91
1.09
1.33
1.66
2.16
3.01
4.73
9.94
20
0.52
0.64
0.79
0.96
1.16
1.45
1.89
2.64
4.14
8.70
30
0.43
0.54
0.68
0.82
1.00
1.24
1.62
2.26
3.55
7.45
40
0.34
0.44
0.56
0.68
0.83
1.04
1.35
1.88
2.96
6.21
50
0.26
0.34
0.45
0.55
0.66
0.83
1.08
1.51
2.37
4.97
60
0.17
0.24
0.33
0.41
0.50
0.62
0.81
1.13
1.78
3.73
70
0.09
0.14
0.22
0.27
0.33
0.41
0.54
0.75
1.18
2.48
80
117
101
87
73
60
48
37
27
17
8
T
A
14.59 12.50 10.42 8.34
30
40
50
60
Ambient temp. [°C]
Ambient temp. [°C]
RAM..125
Load
current [A]
Thermal resistance
[K/W]
Power
dissipation [W]
Heatsink Selection
Carlo Gavazzi Heatsink
(see Accessories)
No heatsink required
RHS 300
RHS 100
RHS 45C
RHS 45B
RHS 90A
RHS 45C plus fan
RHS 45B plus fan
RHS 112A
RHS 301
RHS 90A plus fan
RHS 112A plus fan
RHS 301 plus fa
Consult your distribution
Infinite heatsink - No solution
Thermal
resistance...
---
5.00 K/W
3.00 K/W
2.70 K/W
2.00 K/W
1.35 K/W
1.25 K/W
1.20 K/W
1.10 K/W
0.80 K/W
0.45 K/W
0.40 K/W
0.25 K/W
> 0.25 K/W
---
for power
dissipation
N/A
>0W
> 25 W
> 55 W
> 60 W
> 60 W
>0W
>0W
> 100 W
> 80 W
>0W
>0W
>0W
N/A
N/A
125.0 0.63
112.5 0.73
100.0 0.84
87.5
75.0
62.5
50.0
37.5
25.0
12.5
0.99
1.20
1.48
1.92
2.65
4.12
8.55
20
0.55
0.64
0.74
0.87
1.05
1.30
1.68
2.32
3.60
7.48
30
0.47
0.54
0.63
0.74
0.90
1.11
1.44
1.98
3.09
6.41
40
0.40
0.45
0.53
0.62
0.75
0.93
1.20
1.65
2.57
5.34
50
0.32
0.36
0.42
0.50
0.60
0.74
0.96
1.32
2.06
4.27
60
0.24
0.27
0.32
0.37
0.45
0.56
0.72
0.99
1.54
3.21
70
0.16
0.18
0.21
0.25
0.30
0.37
0.48
0.66
1.03
2.14
80
126
110
95
81
67
54
42
30
19
9
T
A
Ambient temp. [°C]
Thermal Specifications
Operating temperature
Storage temperature
Junction temperature
-40° to +80°C (-40˚ to +176˚F)
-40° to +100°C (-40˚ to +212˚F)
≤
125˚C (257˚F)
Isolation
Rated isolation voltage
Input to output
Output to case
≥
4000VACrms
≥
4000VACrms
4
Specifications are subject to change without notice (28.02.2007)
RAM1A, RAM1B
Faston terminals
• Faston tabs
• Tab dimensions accord-
ing to DIN 46342 part 1
• Pure tin-plated brass
Ordering Key
Screw mounted
Faston terminals
RAM Solid State Relay
Faston terminals
Tab orientation
Input Tab width: 4.8mm
Output Tab width: 6.3mm
RAM1A60D25 F 4
*
Faston terminals
in packs of 20
RM48
**
F4
*
RS, RM Solid State Relay
Tab orientation
* 0: Flat (0º)
4: Angled (45º)
** 48: 4.8mm faston for input
63: 6.3mm faston for output
Fork Terminals
• Terminal adaptors
for 35mm
2
cable
• Type RM635FK
• Pack size: 20 pieces
Ordering Key
RM terminal adaptor
Touch protected (optional)
RM635FK
P
Other Accessories
•
•
•
•
Heatsinks and fans
Type RHS....
0.25 to 5.00 k/W
Single and dual
relay types
•
•
•
•
Touch safety cover
Type RMIP20
IP20 protection degree
Pack size: 20 pieces
All accessories can be ordered pre-assembled with Solid State Relays.
Other accessories include DIN rail adaptors, fuses, varistors and spacers.
For futher information refer to Accessories datasheets.
Specifications are subject to change without notice (28.02.2007)
5
