MDR-120S
Compact, 120W
DIN Rail Mount
AC/DC Power Supply
Electrical Specifications
Key Features:
Specifications typical @ +25°C, 230 VAC input voltage & rated output current, unless otherwise noted. Specifications subject to change without notice.
Input
• 120W Output Power
Parameter
• EN 60950 Approved
Input Voltage Range
• Compact, DIN Rail Case
Input Frequency
• Active PFC
Inrush Current, See Note 1
• 85-264 VAC Input
Power Factor Correction
Conditions
115 VAC
230 VAC
115 VAC
230 VAC
Start Up
Shut Down
• TS-35/7.5 or TS-35/15 Rails
• Meets EN 55022 B
Min.
85
120
47
Input Under Voltage Shutdown
Typ.
35
70
0.98
0.96
76
67
Output
• Remote ON/OFF Control
Parameter
Output Voltage Accuracy
Output Voltage Adjust
Line Regulation
Load Regulation
Ripple & Noise (20 MHz)
Hold-Up Time
Temperature Coefficient
Over Temperature Protection
Over Voltage Protection
Short Circuit Protection, See Note 3
Overload Protection, See Note 4
Conditions
Min.
Typ.
VIN = Min to Max
IOUT = 10% to 100%
25.0
±0.03
Auto-Recovery
95
See Note 2
30
Continuous (Auto-Recovery)
Auto-Recovery 110
Units
VAC
VDC
Hz
A Pk
83
75
1.5
Start Up Time
• High Efficiency
Max.
264
370
63
VAC
S
Max.
±1.0
±5.0
±0.5
±1.0
100
Units
%
%
%
%
m V P-P
mS
%/°C
°C
VDC
150
%IOUT
Max.
Units
115/230 VAC
General
Parameter
Conditions
Input to Output
Input to 
Output to 
Isolation Voltage, 60S
Switching Frequency
EMI Characteristics, See Note 5
Parameter
Radiated Emissions
Conducted Emissions
ESD
MicroPower Direct
292 Page Street
Suite D
Stoughton, MA 02072
USA
T: (781) 344-8226
F: (781) 344-8481
E: sales@micropowerdirect.com
W: www.micropowerdirect.com
RS
EFT
Surge
CS
PFM
Voltage Dips, Interruptions
Min.
3,000
1,500
500
Typ.
VAC
100
Standard
Criteria
EN 55024
EN 55022
EN 61000-4-2
B
EN 61000-4-3
EN 61000-4-4
EN 61000-4-5
EN 61000-4-6
EN 61000-4-8
EN 61000-4-11
A
B
B
A
A
B
kHz
Level
Class B
Class B
±8 kV Air
±6 kV Contact
10V/m
±4 kV
±2 kV/ ±4 kV
10 Vrms
10A/m
0% - 70%
Environmental
Parameter
Operating Temperature Range
Storage Temperature Range
Cooling
Humidity
Conditions
Min.
Typ.
Max.
-25
+25
+70
-25
+85
Free Air Convection (See Derating Curve on Page 2)
RH, Non-condensing
95
Ambient
Units
°C
°C
%
Physical
Case Size
Case Material
Weight
See Mechanical Diagram (Page 2)
Heat Resistant Plastic (UL94-V0) and Metal
18.9 Oz (560g)
Reliability Specifications
Parameter
MTBF
Safety Standards
Safety Class
Conditions
Min.
MIL HDBK 217F, 25°C, Gnd Benign
300
EN 60950
Class I
Typ.
www.micropowerdirect.com
Max.
Units
kHours
www.micropowerdirect.com
Model Selection Guide
Model
Number
MDR-120S-24
Input Current
(A Max)
Voltage
115 VAC
230 VAC
(VDC)
1.5
0.75
24.0
Output
Current (A)
Max.
Min.
5.0
Efficiency
(%, Typ)
Standby
Capacitive
Power
Load
Consumption
(µF Max)
(W Max)
0.0
92
4,700
0.75
Derating Curve, Temperature
Other outputs may be available
Contact the factory for details at:
sales@micropowerdirect.com
Notes:
1. Inrush current is given for a cold start at 25°C.
2. Over voltage protection is provided by a zener diode clamp.
3. Output short circuit protection is provided by a “hiccup mode”
circuit. The unit recovers automatically when the fault condition is
removed.
4. Output overload protection is provided by a fold back current
limiting circuit with auto-recovery. A long-term overload could
damage the unit.
5. EMI characteristics are specified without external components.
6. Operation at no-load will not damage these units. However, they
may not meet all specifications.
7. Applying a voltage level of 4.5 to 12.5 VDC across the control
terminals (see mechanical diagram) will turn the unit off. When
the control inputs are left open, the unit will operate normally.
8. The MDR-120S is designed for mounting on a standard 35 mm DIN
rail (TS35).
9. It is recommended that an external slow blow fuse also be used on
the input for protection. Contact the factory for more information.
Derating Curve, Input Voltage
Mechanical Dimensions
Wire Connections
Pin
Function
1
2
3
4
5
6
7
+VOUT
+VOUT
-VOUT
-VOUT
AC-Neutral
AC-Line

Notes:
• All dimensions are typical in inches (mm)
• Wire Range is: 26 - 10 AWG, Strip length is 0.32 (8.0)
• Tolerance x.xx = ±0.04 (±1.0)
MicroPower Direct
We Power Your Success - For Less!
292 Page Street Ste D Stoughton, MA 02072
•
TEL: (781) 344-8226
•
FAX: (781) 344-8481
•
E-Mail: sales@micropowerdirect.com