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24 V / 5 A, 120 W Single Output Industrial DIN Rail Power Supply, voltage range 88 ~ 132 VAC/176 ~ 264 VAC by switch 248 ~ 370 VDC. This item has been replaced with SDR-240-24 and DP-1200.


24 V / 5 A, 120 W Single Output Industrial DIN Rail Power Supply, voltage range 88 ~ 132 VAC/176 ~ 264 VAC by switch 248 ~ 370 VDC. This item has been replaced with SDR-240-24 and DP-1200.

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References & Support


The DR-120-24 has officially been phased out and will no longer be available. It has now been replaced by SDR-240-24 and DP-1200.

  • 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
  • UL 508(industrial control equipment)approved
  • LED indicator for power on
  • Fixed switching frequency at 55KHz
  • 100% full load burn-in test


Model DR-120-24
Voltage range 88 ~ 132 VAC/176 ~ 264 VAC by switch
248 ~ 370 VDC
Frequency range 47 ~ 63Hz
Efficiency (Typ.) 85 %
AC Current (Typ.) 2.6 A/115 VAC
1.6 A/230 VAC
Inrush Current (Typ.) Cold Start 20 A/115 VAC
40 A/230 VAC
Leakage current <3.5 mA / 240 VAC
DC Voltage 24 V
Rated Current 5 A
Current Range 0 ~ 5 A
Rated power 120 W
Ripple & noise (max.)  Note.2 100mVp-p
Voltage ADJ. range 24 ~ 28 V
Voltage Tolerance        Note.3 ±1.0%
Line Regulation ±0.5%
Load regulation ±1.0%
Setup, rise Time           Note.5 500 ms, 70 ms/230 VAC
500 ms, 70 ms/115 VAC at full load
Hold up time (Typ.) 36 ms/230 VAC
32 ms/115 VAC at full load
Overload 105 ~ 150% rated output power
Protection type : Constant current limiting, recovers automatically after fault condition is removed
Over voltage 29 ~ 33 V
Protection type : Shut down o/p voltage, re-power on to recover
Working temp. -10 ~ +60 °C (Refer to output load derating curve)
Working humidity 20 ~ 90% RH non-condensing
Storage TEMP., humidity -20 ~ +85 °C , 10 ~ 95% RH
TEMP. Coefficient ±0.03%/°C (0 ~ 50°C)
Vibration 10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes
Safety & EMC (Note 4)
Safety standards UL508, UL60950-1, TUV EN60950-1 Approved
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/500 VDC
EMI Conduction & Radiation Compliance to EN55011,EN55022 (CISPR22) Class B
Hsrmonic current Compliance to EN61000-3-2,-3
EMS immunity Compliance to EN61000-4-2,3,4,5,6,8,11, ENV50204, EN55024, EN61000-6-2 (EN50082-2) Heavy industry level, criteria A
DC OK Relay Contact
Contact Close When the output voltage reaches the adjusted output voltage.
Contact Open When the output voltage drop below 90% output voltage.
Contact Ratings (max.) 30V/1A resistive load
MTBF 136.8Khrs min.
MIL-HDBK-217F (25°C)
Dimensions (W x H x D) 65.5 x 125.2 x 100 mm
Packing 0.79 Kg; 20 pcs/16.5 Kg/1.1 CUFT
  1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25°C 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.


Terminal Pin. No Assignment (TB1) Terminal Pin. No Assignment (TB2)
Pin No. Assignment
1 FGterminal
2 AC/N
3 AC/L
Pin No. Assignment


Output Derating

Static Characteristics (24V)

accessories accessories 2

References and Support

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