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Mean Well

Mean Well MDR-40-24 Single Output Industrial Power Supply 40W 24V 1.7A - DIN Rail

ultra slimbuilt-in active PFC function
SKU MDR-40-24
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MDR-40-24
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Overview

MDR-40-24 is the 24V output model of this series: rated current 1.7A, rated power 40.8W, typical efficiency 88%.

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
  • Class I, Div 2 Hazardous Locations T4
  • LED indicator for power on
  • DC OK relay contact
  • No load power consumption<0.75W
  • 100% full load burn-in test
  • 3 years warranty

Specifications

MDR-40-24Specifications from the official datasheet (2024-10-30 edition)

OUTPUT

DC VOLTAGE
24V
RATED CURRENT
1.7A
CURRENT RANGE
0 ~ 1.7A
RATED POWER
40.8W
RIPPLE & NOISE (max.)Note.2
150mVp-p
VOLTAGE ADJ. RANGE
24 ~ 30V
VOLTAGE TOLERANCENote.3
±1.0%
LINE REGULATION
±1.0%
LOAD REGULATION
±1.0%
SETUP, RISE TIMENote.5
500ms, 30ms/230VAC 500ms, 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.)
88%
AC CURRENT (Typ.)
1.1A/115VAC 0.7A/230VAC
INRUSH CURRENT (Typ.)
COLD START 30A/115VAC 60A/230VAC
LEAKAGE CURRENT
<1mA / 240VAC

PROTECTION

OVERLOAD
105 ~ 150% rated output power Protection type : Constant current limiting, recovers automatically after fault condition is removed
OVER VOLTAGE
31.2 ~ 36V Protection type : Shut down o/p voltage, re-power on to recover

FUNCTION

DC OK SIGNAL
Relay contact rating(max.): 30V/1A resistive

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, period for 60min. each along X, Y, Z axes ; Mounting : Compliance to IEC60068-2-6

SAFETY & EMC

SAFETY STANDARDS
UL508, UL62368-1, TUV BS EN/EN62368-1,Class I, Div. 2 Group A, B, C, D Hazardous Locations T4, EAC TP TC 004, BSMI CNS14336-1, AS/NZS 60950.1 ,IS13252(Part1)/IEC60950-1(except 48V)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, CNS13438 Class B
EMC IMMUNITY
Compliance to BS EN/EN61000-4-2, 3, 4, 5, 6, 8, 11, BS EN/EN55035, BS EN/EN61000-6-2, BS EN/EN61204-3, heavy industry level, EAC TP TC 020

OTHERS

MTBF
2418.5K hrs min. Telcordia SR-332 (Bellcore) ; 301.7K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
40*90*100mm (W*H*D)
PACKING
0.3Kg; 42pcs/13.6Kg/0.82CUFT
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 first cold 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-40-24 Mechanical Specification
Mechanical Specification
MDR-40-24 Block Diagram
Block Diagram
MDR-40-24 Derating Curve
Derating Curve

Downloads

FAQ

Can I use the MDR-40-24 for a 24V PLC, I/O module, or industrial controller?

Yes, this unit is suited to 24V DC control hardware that stays within 40.8W and 1.7A. Its DIN rail format and 40 mm wide housing help it fit neatly into standard industrial control panels.

Is the MDR-40-24 suitable for building automation panels that use 24V DC components?

It is a practical choice for building management and automation panels that require a 24V DC supply up to 1.7A. The 85-264VAC input range also supports use in panels fed from a broad AC input range.

Can this model power 24V sensors, relays, and low-current automation devices in one enclosure?

Yes, as long as the combined load does not exceed 40.8W or 1.7A at 24V. That makes it appropriate for distributed 24V control devices inside a DIN rail cabinet.

Is the MDR-40-24 a good option when panel space is tight?

Yes, the housing is 40 x 90 x 100 mm (W x H x D) and mounts on TS-35/7.5 or TS-35/15 DIN rail. For compact control cabinets, that 40 mm wide profile can be easier to place than larger power supplies.

Should the MDR-40-24 be used inside an enclosure or in exposed environments?

This power supply is best suited to control cabinet or enclosure use. The provided specs list an operating temperature range of -20C to +70C with output derating at higher ambient temperatures (see the derating curve), but do not list a protective outdoor or sealed enclosure rating.

What are the main differences between the MDR-40-24 and other MDR series versions?

Within the MDR-40 series, the MDR-40-24 is the 24V version at 40.8W and 1.7A. The other versions are MDR-40-5 at 5V, 30W and 6A, MDR-40-12 at 12V, 40W and 3.33A, and MDR-40-48 at 48V, 39.8W and 0.83A. All share the 85-264VAC input, convection cooling, DC OK relay and the 40 x 90 x 100 mm DIN rail housing.

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Mean Well MDR-40-24 Single Output Industrial Power Supply 40W 24V 1.7A - DIN Rail
Mean Well

Mean Well MDR-40-24 Single Output Industrial Power Supply 40W 24V 1.7A - DIN Rail

Log in to see price

MDR-40-24 is the 24V output model of this series: rated current 1.7A, rated power 40.8W, typical efficiency 88%.

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
  • Class I, Div 2 Hazardous Locations T4
  • LED indicator for power on
  • DC OK relay contact
  • No load power consumption<0.75W
  • 100% full load burn-in test
  • 3 years warranty

Model

  • 10W 24V
  • 100W 24V
  • 20W 24V
  • 40W 24V
  • 60W 24V
View product

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