
120W Single Output Industrial DIN RAIL
NDR-120 series
■ Features ■ Applications  
Universal AC input / Full range  
Protections: Short circuit / Overload / Over voltage 
             / Over temperature
Cooling by free air convection
Industrial control system 
Semiconductor fabrication equipment 
Factory automation 
Electro-mechanical apparatus 
Can be installed on DIN rail TS-35/7.5 or 15 
UL 508 (industrial control equipment) approved 
EN61000-6-2(EN50082-2) industrial immunity level 
100% full load burn-in test 
3 years warranty
Bauar 
Sicherheit
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ID 2000000000
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tuv.com
■ Description 
NDR-120 is one economical slim 120W DIN rail power supply series, adapt to be installed on TS-35/7.5 
or TS-35/15 mounting rails. The body is designed 40mm in width, which allows space saving inside the 
cabinets. The entire series adopts the full range AC input from 90VAC to 264VAC and conforms to 
EN61000-3-2, the norm the European Union regulates for harmonic current. 
NDR-120 is designed with metal housing that enhances the unit's power dissipation. With working efficiency 
up to 89%, the entire series can operate at the ambient temperature between -20 and 70 under air ℃℃ 
convection. It is equipped with constant current mode for over-load protection, fitting various inductive 
or capacitive applications. The complete protection functions and relevant certificates for industrial control 
apparatus (UL508, TUV EN60950-1, and etc.) make NDR-120 a very competitive power supply solution for 
industrial applications.
■ Model Encoding
-12NDR - 120
Output voltage
Output wattage
Series name
File Name:NDR-120-SPEC  2014-09-16
 

SPECIFICATION
120W Single Output Industrial DIN RAIL
NDR-120 series
MODEL
DC VOLTAG E
RATED CURRENT
CURRENT RANGE
RATED POWER
RIPPLE & NOISE (max.)
OUTPUT VOLTAGE ADJ. RANGE
VOLTAGE TOLERANCE
LINE REGULATION
LOAD REGULATION
SETUP, RISE TIME
HOLD UP TIME (Typ.)
VO LTAG E R AN GE
FREQUENCY RANGE
INPUT
PROTECTION
ENVIRONMENT
SAFETY &
EMC
(Note 4)
NOTE
EFFICIENCY (Typ.)
AC CURRENT (Typ.) 
INRUSH CURRENT (Typ.)
LEAKAGE CURRENT
OVERLOAD
OVER VOLTAGE
OVER TEMPERATURE
WORKING TEMP.
WORKING HUMIDITY
STORAGE TEMP., HUMIDITY
TEMP. COEFFICIENT
VIBRATION
SAFETY STANDARDS 
WITHSTAND VOLTAGE
ISOLATION RESISTANCE 
EMC EMISSION
EMC IMMUNITY 
MTBF
DIMENSIONOTHERS
PACKING
1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25 of ambient temperature.℃
2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor.
3. Tolerance : includes set up tolerance, line regulation and load regulation.
4. The power supply is considered a component which will be installed into a final equipment. The final equipment must be re-confirmed that it still meets 
  EMC directives.
5. Installation clearances : 40mm on top, 20mm on the bottom, 5mm on the left and right side are recommended when loaded permanently with full power. 
  In case the adjacent device is a heat source, 15mm clearance is recommended.
6. Derating may be needed under low input voltage. Please check the derating curve for more details.
NDR-120-12
12V
10A
0 ~ 10A
120W
Note.2
100mVp-p
12 ~ 14V
Note.3
±2.0% 
±0.5% 
±1.0%
1200ms, 60ms/230VAC     2500ms, 60ms/115VAC at full load
16ms/230VAC     10ms/115VAC at full load
Note.6
90 ~ 264VAC     127 ~ 370VDC   [DC input operation possible by connecting AC/L(+), AC/N(-)]
47 ~ 63Hz
85.5%
2.25A/115VAC     1.3A/230VAC 
20A/115VAC     35A/230VAC
<1mA / 240VAC
105 ~ 130% rated output power
Protection type : Constant current limiting, recovers automatically after fault condition is removed
14 ~ 17V
Protection type : Shut down o/p voltage, re-power on to recover
Shut down o/p voltage, re-power on to recover
-20 ~ +70 (Refer to "Derating Curve")℃
20 ~ 95% RH non-condensing
-40 ~ +85 , 10 ~ 95% RH℃ 
±℃ ℃0.03%/ (0 ~ 50 )
Component:10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes; Mounting: Compliance to IEC60068-2-6
UL508, TUV EN60950-1 approved 
I/P-O/P:3KVAC   I/P-FG:2KVAC   O/P-FG:0.5KVAC
I/P-O/P, I/P-FG, O/P-FG:>100M Ohms / 500VDC / 25 / 70% RH℃
Compliance to EN55022 (CISPR22), EN61204-3 Class B, EN61000-3-2,-3
Compliance to EN61000-4-2,3,4,5,6,8,11, EN55024, EN61000-6-2 (EN50082-2), EN61204-3, heavy industry level, criteria A
456.3K hrs min.   MIL-HDBK-217F (25 )℃
40*125.2*113.5mm (W*H*D)
0.6Kg; 20pcs/13Kg/1.16CUFT
NDR-120-24 NDR-120-48
24V 48V
5A 2.5A
0 ~ 5A 0 ~ 2.5A
120W 120W
120mVp-p 150mVp-p
24 ~ 28V 48 ~ 55V
±1.0% ±1.0% 
±0.5% ±0.5% 
±1.0% ±1.0%
88%
29 ~ 33V
89%
56 ~ 65V
File Name:NDR-120-SPEC  2014-09-16
 

Block Diagram
120W Single Output Industrial DIN RAIL
NDR-120 series
fosc : 70KHz
RECTIFIERS
&
FILTER
O.V.P.
FG
I/P
EMI FILTER
&
RECTIFIERS
O.L.P.
O.T.P.
POWER
SWITCHING
PWM
CONTROL
Derating Curve Static Characteristics
230VAC
100
80
115VAC
60
50
40
LOAD (%)
20
-2001020304045506070
-10
12V
(115VAC only)
AMBIENT TEMPERATURE ( )℃
12V,24V,48V
(VERTICAL)
100
90
80
70
60
50
LOAD (%)
LOAD (%)
40
90 100 125 135 145 155 165 175 180 200 230 264
INPUT VOLTAGE (V) 60Hz
+V
-V
O.C.P.
DETECTION
CIRCUIT
175
File Name:NDR-120-SPEC  2014-09-16
 

120W Single Output Industrial DIN RAIL
Mechanical SpecificationMechanical Specification
113.5
Top Vie w
40
3
2
1
NDR-120 series
Case No.992D    Unit:mm
4
39
Installation Instruction
125.2
TB2
+V ADJ.
DC OK
TB1
3
2
1
Bottom View
+
Side ViewSide View Front View
Terminal Pin No. Assignment (TB1)
Pin N o.
Assignment
1
FG
2
AC/N or DC -
3
AC/L or DC +
Terminal Pin No. Assignment (TB2)
Pin N o.
Assignment
DC OUTPUT -V
1,2
DC OUTPUT+V
3,4
Back View
35
ADMISSIBLE DIN-RAIL:TS35/7.5 ORTS35/15
(For reference only. Not included with unit.)
This series fits DIN-RAIL TS35/7.5 or TS35/15. 
For installation details, please refer to the USER MANUAL on 
http://www.meanwell.com/search/NDR-120/NDR_manual.pdf
File Name:NDR-120-SPEC  2014-09-16