Specifications are subject to change without notice (30.09.2005)
1
Rated operational
Non-rep.
Control
Rated operational current
voltage
voltage
voltage
20 AACrms
230 VAC15%
600 V
p
4-32 VDC
RMD1H23D20
24-275 VAC
RMD1H23A20
24-190 VDC
Hybrid Relay
Number of Poles
Switching mode
Rated operational voltage
Control voltage
Rated operational current
Hybrid relay: Solid State Relay /
Electromechanical Relay
Operational ratings up to 230V, 20A ACrms
Integral bypassing of semiconductors
Internal over-temperature protection
Compact 17.5mm wide housing
Standard modular design
DIN rail mounting
No need for external heatsink
Minimum audible noise
Fit and forget: millions of switching cycles
Ideal for switching of single phase loads in residential
buildings
Product Description
The RMD houses semiconductor
thyristors and mechanical con-
tacts that compliment each oth-
er. On applying the control volt-
age, thyristors are activated.
After a short delay, an elec-
tromechanical relay is activated.
This switching method protects
the contacts of the electrome-
Ordering Key
Solid State Relays
chanical relay and reduces
heating of the thyristors. The
same principle applies dur-
ing removal of the control
input. The result is millions
of trouble-free cycles in a
compact and modular
switching package.
Selection Guide
Industrial, 1-Phase Hybrid
Switching mode
Rated operational
Rated operational
Control voltage
voltage
current
H: Hybrid Switching
23:230 VAC 15%
20: 20AACrms
D: 4-32 VDC
A: 24-275VAC/ 24-190VDC
Type Selection
RMD 1 H 23 D 20
Type RMD
General Specifications
Operational voltage range
90-260VACrms
Non-rep. peak voltage
600V
p
Zero voltage turn-on
<15V
Operational frequency range 45-65Hz
Power factor
0.9 @ 230VACrms
Approvals
UL, cUL
Markings
CE
Emission
RMD1H23D20
EN55011/CISPR11 Class A
RMD1H23A20
EN55011/CISPR11 Class B
Pollution degree
2
Degree of protection
IP20 (IEC 60529)
Numbers of cycles
> 5,000,000
Audible noise
< 40dB at 1m
Control status indication
LED, Green
Dielectric withstand voltage
input to output
2.5kVACrms
2
Specifications are subject to change without notice (30.09.2005)
All dimensions in mm
RMD
Dimensions
Connection Diagram
N
L
A1+
LOAD
A2-
1
3
2
4
1N 3L A1
2
4 A2
Input Specifications
RMD1H23D20
RMD1H23A20
Control voltage
4-32VDC
24-275VAC/ 24-190VDC
Pick-up voltage
2VDC
9VAC
Drop-out voltage
1VDC
5VAC
Reverse voltage
32VDC
-
Max. input current
5mADC
2.5mAAC
Response time pick-up
40ms
40ms
Response time drop-out
70ms
100ms
Output Specifications
Rated opertional current
AC1/AC51/AC7a @ 25C
20AACrms,(16AACrms UL rating)
@ 40C
16AACrms
@ 55C
11.5AACrms
Assigned load rating (resistive) 4.5kW @ 25C
Rep. overload current t=1s
37AACrms
Non-rep. surge current, t=10ms 200A
p
I
2
t for fusing, 1ms<t<10ms
200A
2
s
Critical dl/dt, non repetitive
100A/s
Critical dV/dt off state min.
500 V/s
Power dissipation at rated
operational current
6.4W
Number of commutations
per minute @ 25C
6
Minimum load current
100mA
Max. leakage current
3mA
Relay contacts
Normally open
AgCdO
Recommended fusing
660 gRB 10-20
(not supplied)
Fuse type ST10
Specifications are subject to change without notice (30.09.2005)
3
RMD
Thermal Specifications
Operating temperature
-5 to +55C
Storage temperature
-40 to +85C
Relative humidity
< 95% non-condensing
Over Temperature Protection
Over-temperature indication LED intermittent
Reset
Switch OFF supply and
switch back ON in > 100ms
Temperature limit
100C
22.5
20
17.5
15
12.5
10
7.5
5
2.5
0
0 2.5 5 7.5 10 12.5 15 17.5 20
Current in
Amps
Space in mm
Derating vs. mounting space
Housing Specifications
Weight
60g (approx)
Housing material
self extinguishing UL94V0
Potting compound
none
Terminals
Tightening screws
M3
Max. terminal tightening
torque
0.6Nm (5.3 lb.in)
Max. cross-sectional area
of cable (stranded)
4.0mm
2
(AWG 12)
2.5mm
2
(AWG12) accord. to
IEC 60947-1
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