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Mean Well

Mean Well MDR-20-12 Single Output Industrial Power Supply 20W 12V 1.67A - DIN Rail

ultra slimbuilt-in active PFC function
SKU MDR-20-12
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Select model — 5 in this family

MDR-20-12
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Overview

MDR-20-12 is the 12V output model of this series: rated current 1.67A, rated power 20W, typical efficiency 80%.

Features

  • Universal AC input/Full range
  • Protections: Short circuit / Overload / Over voltage
  • Cooling by free air convection
  • Can be installed on DIN rail TS-35/7.5 or 15
  • Built in DC OK active signal
  • LED indicator for power on
  • No load power consumption<0.75W
  • 100% full load burn-in test
  • 3 years warranty

Specifications

MDR-20-12Specifications from the official datasheet (2024-10-30 edition)

OUTPUT

DC VOLTAGE
12V
RATED CURRENT
1.67A
CURRENT RANGE
0 ~ 1.67A
RATED POWER
20W
RIPPLE & NOISE (max.)Note.2
120mVp-p
VOLTAGE ADJ. RANGE
10.8 ~ 13.2V
VOLTAGE TOLERANCENote.3
±1.0%
LINE REGULATION
±1.0%
LOAD REGULATION
±1.0%
SETUP, RISE TIMENote.5
500ms, 30ms/230VAC 1000ms, 30ms/115VAC at full load
HOLD UP TIME (Typ.)
50ms/230VAC 20ms/115VAC at full load

INPUT

VOLTAGE RANGE
85 ~ 264VAC 120 ~ 370VDC
FREQUENCY RANGE
47 ~ 63Hz
EFFICIENCY (Typ.)
80%
AC CURRENT (Typ.)
0.55A/115VAC 0.35A/230VAC
INRUSH CURRENT (Typ.)
COLD START 20A/115VAC 40A/230VAC
LEAKAGE CURRENT
<1mA / 240VAC

PROTECTION

OVERLOAD
105 ~ 160% rated output power Protection type : Constant current limiting, recovers automatically after fault condition is removed
OVER VOLTAGE
13.8 ~ 16.2V Protection type : Shut down o/p voltage, re-power on to recover

FUNCTION

DC OK ACTIVE SIGNAL (max.)
9 ~ 13.5V / 40mA

ENVIRONMENT

WORKING TEMP.
-20 ~ +70℃ (Refer to "Derating Curve")
WORKING HUMIDITY
20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY
-40 ~ +85℃, 10 ~ 95% RH
TEMP. COEFFICIENT
±0.03%/℃ (0 ~ 50℃)
VIBRATION
Component:10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes; Mounting: Compliance to IEC60068-2-6

SAFETY & EMC (Note 4)

SAFETY STANDARDS
Ul508, TUV BS EN/EN62368-1, EAC TP TC 004, BSMI CNS15598-1, AS/NZS 62368.1 , IS13252(Part1)/IEC60950-1 approved
WITHSTAND VOLTAGE
I/P-O/P:3KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC
ISOLATION RESISTANCE
I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION
Compliance to BS EN/EN55032 (CISPR32), BS EN/EN61204-3 Class B, BS EN/EN61000-3-2,-3, EAC TP TC 020, CNS15936 Class B
EMC IMMUNITY
Compliance to BS EN/EN61000-4-2, 3, 4, 5, 6, 8, 11, BS EN/EN55035,BS EN/EN61000-6-1,BS EN/EN61204-3, light industry level, EAC TP TC 020

OTHERS

MTBF
2780.8K hrs min. Telcordia SR-332 (Bellcore) ; 236.9K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
22.5*90*100mm (W*H*D)
PACKING
0.17Kg; 72pcs/13.2Kg/1.04CUFT
Test conditions and notes6
  1. 1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.
  2. 2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1μF & 47μF parallel capacitor.
  3. 3. Tolerance : includes set up tolerance, line regulation and load regulation.
  4. 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. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.” (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )
  5. 5. Length of set up time is measured at cold first start. Turning ON/OFF the power supply may lead to increase of the set up time.
  6. 6. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).

Technical drawings

MDR-20-12 Mechanical Specification
Mechanical Specification
MDR-20-12 Block Diagram
Block Diagram
MDR-20-12 Application of DC OK Active Signal
Application of DC OK Active Signal
MDR-20-12 Derating Curve
Derating Curve

Downloads

FAQ

Can I use the MDR-20-12 for a small 12V PLC or control panel circuit?

Yes, it is suitable for small PLC or control panel loads that require 12V DC up to 1.67A. The 20W output is aimed at lighter-duty industrial control applications rather than high-current 12V loads.

Is the MDR-20-12 a good fit for industrial automation components that need 12V DC?

It can be used for industrial automation components inside a cabinet when the total 12V load stays within 1.67A. Its ultra slim 22.5 mm width helps in narrow DIN rail layouts where panel space is limited.

Can this power supply be used in building management control enclosures with 12V devices?

Yes, it is appropriate for building management enclosures that use 12V DC controllers, relays, or interface devices within a 20W power budget. The 85-264VAC input also supports a broad AC input range for building panels.

What is the difference between the MDR-20-12 and other 12V MDR models?

This datasheet covers the MDR-20 series, in which the MDR-20-12 is the only 12V model, rated 20W and 1.67A. The other versions are the MDR-20-5 (5V, 15W, 3A), MDR-20-15 (15V, 20W, 1.34A) and MDR-20-24 (24V, 24W, 1A), all in the same 22.5 x 90 x 100 mm DIN rail housing.

Is the MDR-20-12 suitable for control cabinet and enclosure use?

Yes, it is intended for protected control cabinets and enclosures rather than exposed environments. Its operating temperature range is -20°C to +70°C, with output derating at higher ambient temperatures according to the derating curve.

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Mean Well MDR-20-12 Single Output Industrial Power Supply 20W 12V 1.67A - DIN Rail
Mean Well

Mean Well MDR-20-12 Single Output Industrial Power Supply 20W 12V 1.67A - DIN Rail

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MDR-20-12 is the 12V output model of this series: rated current 1.67A, rated power 20W, typical efficiency 80%.

Features

  • Universal AC input/Full range
  • Protections: Short circuit / Overload / Over voltage
  • Cooling by free air convection
  • Can be installed on DIN rail TS-35/7.5 or 15
  • Built in DC OK active signal
  • LED indicator for power on
  • No load power consumption<0.75W
  • 100% full load burn-in test
  • 3 years warranty

Model

  • 10W 12V
  • 100W 12V
  • 20W 12V
  • 40W 12V
  • 60W 12V
View product

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