Model: MDR-20-24
24W Single Output Industrial DIN Rail Power Supply

  • 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
  • NEC class 2 / LPS compliant
  • Built in DC OK active signal
  • DC OK relay contact
  • No load power consumption<0.75W
  • 100% full load burn-in test
  • 3 years warranty
Voltage range 85 ~ 264 VAC
120 ~ 370 VDC
Frequency range 47 ~ 63Hz
Efficiency (Typ.) 84%
AC Current (Typ.) 0.55 A/115 VAC
0.35 A/230 VAC
Inrush Current (Typ.) COLD START 20 A/115 VAC
40 A/230 VAC
Leakage current <1 mA / 240 VAC
DC Voltage 24 VDC
Rated Current 1 A
Current Range 0 ~ 1 A
Rated power 24 W
Ripple & noise (max.)  Note.2 150mVp-p
Voltage ADJ. range 21.6 ~ 26.4 V
Voltage Tolerance        Note.3 ±1.0%
Line Regulation ±1.0%
Load regulation ±1.0%
Setup, rise Time           Note.5 50 ms/230 VAC
0 ms/115 VAC at full load
Hold up time (Typ.) 85 ~ 264 VAC
120 ~ 370 VDC
Overload 105 ~ 160% rated output power
Protection type : Constant current limiting, recovers automatically after fault condition is removed
Over voltage 27.6 ~ 32.4V
Protection type : Shut down o/p voltage, re-power on to recover
DC OK Active Signal (max.) 18 ~ 27 V/20 mA
Working temp. -20 ~ +70¢XC (Refer to output load derating curve)
Working humidity 20 ~ 90% RH non-condensing
Storage TEMP., humidity -40 ~ +85¢XC , 10 ~ 95% RH
TEMP. Coefficient ±0.03%/¢XC (0 ~ 50¢XC)
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 EN60950-1 approved, NEC class 2 / LPS compliant
Withstand voltage I/P-O/P:3KVAC    I/P-FG:1.5KVAC    O/P-FG:0.5KVAC
Isolation resistance I/P-O/P, I/P-FG, O/P-FG:100M Ohms/500VDC
EMI Conduction & Radiation Compliance to EN55011,EN55022 (CISPR22), EN61204-3 Class
Hsrmonic current Compliance to EN61000-3-2,-3
EMS immunity Compliance to EN61000-4-2, 3, 4, 5, 6, 8, 11, ENV50204, EN55024,EN61000-6-1,EN61204-3, light industry level, criteria A
MTBF 236.9K hrs min.
MIL-HDBK-217F (25¢XC )
Dimension (WxHxD) 22.5mm x 90mm x 100mm
Packing 0.19Kg; 72pcs/14.7Kg/0.91CUFT

  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. Length of set up time is measured at first cold start. Turning ON/OFF the power supply may lead to increase of the set up time.
Application of DC OK Active Signal  
Derating Curve Output Derating VS Input Voltage
MDR-20-24 CR 24W Single Output Industrial DIN Rail Power Supply (RoHS)
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