AC/DC Power Supplies

Delta Electronics MEB-500A24F AA Medical AC/DC Power Supply

Name: MEB-500A24F AA Delta Electronics MEB-500A24F AA Medical AC/DC Power Supply
SKU: MEB-500A24F AA

The Delta MEB-500A24F AA is an internal panel mount AC-DC power supply designed for medical applications requiring regulated 24Vdc output from a universal 90-264Vac input. It delivers 24Vdc at up to 21A for 504W output power, with a 5V / 1A standby output and a 12V / 0.5A fan output for system use. This model provides 2 x MOPP isolation, Type BF...

This model provides 2 x MOPP isolation, Type BF patient access leakage current performance, built-in remote on/off, and compliance with IEC 60601-1-2 4th Edition requirements. Datasheet-supported features include built-in fan cooling, 21.6-26.4V output adjustment range, high power density, medical and ITE safety approvals, and EMC-compliant to IEC 60601-1-2 4th Edition requirements.

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Features

Input voltage range: 90-264Vac.
Output voltage: 24Vdc main output with 21.6-26.4V adjustment range, plus 5V / 1A standby and 12V / 0.5A fan output.
Output current: 21A main output.
Output power: 504W.
Efficiency: 92% typ. at 230Vac.
2 x MOPP isolation and Type BF patient access leakage current performance.
Built-in Remote On/Off.
Built-in fan cooling.
Medical and ITE safety approvals.
Compliant with IEC 60601-1-2 4th Edition requirements.
High power density.

Specifications

INPUT RATINGS/CHARACTERISTICS
Nominal Input Voltage		100-240 Vac¹⁾
Input Voltage Range		90-264 Vac
Nominal Input Frequency		50-60 Hz
Input Frequency Range		47-63 Hz
Input Current (Rated Output Current)		5 A typ.@ 120 Vac , 2.6 A typ. @ 230 Vac
Input Surge Voltage (max)		300 Vac for 100 ms
Efficiency		92% typ. @ 230 Vac
Standby Power (max)		0.5 W (only standby working with Inhibit signal high) @ 115 Vac/60 Hz, 230 Vac/50 Hz
Inrush Current		40 A typ. @ 230 Vac, Cold start, @ 25°C
Power Factor		0.98 typ. @ 115 Vac, 0.96 typ. @ 230 Vac
Input-PE (protective earth) leakage current (max)		0.25 mA @ NC, 0.5 mA @ SFC²⁾
Output-PE (protective earth) leakage current for Type BF application (max)		0.1 mA @ NC, 0.3 mA @ SFC²⁾
1) 100-120V, 200-240V safety approval 2) NC: normal condition, SFC: single fault condition, @264Vac

OUTPUT RATINGS/CHARACTERISTICS
Nominal Output Voltage	24 Vdc
Factory Set Point Tolerance	24 Vdc ± 1%@ No Load
Output voltage adjustment range	21.6 V~26.4 V
Rated Output Current	21 A
Output Power	504 W
Static Line Regulation	96 mv max.
Static Load Regulation	150 mv max.
PARD* (20 MHz)	< 300 mVpp @ 0~+50°C < 360 mVpp @ -20~0°C
Rise Time	50 ms max
Start-up Time	800 ms max
Hold-up Time	16 ms typ. @ 120 Vac (100% load)
Dynamic Response (Overshoot & Undershoot O/P Voltage)	±10% @50-100% load (Slew Rate: 0.1 A/μS, 50% duty cycle @ 100 Hz)
Start-up with Capacitive Loads	8,800 μF Max
*PARD is measured with an AC coupling mode, and in parallel to end terminal with 0.1 μF ceramic capacitor & 22 μF electrolytic capacitor.

OUTPUT RATINGS / CHARACTERISTICS - STANDBY OUTPUT
Nominal Output Voltage of Standby output **	5 V
Nominal Output Current of Standby output	1 A
Total Regulation of Standby output	± 5%
PARD* (20 MHz) of Standby output	300 mV max
PARD is measured with an AC coupling mode, and in parallel to end terminal with 0.1 μF ceramic capacitor & 22 μF electrolytic capacitor. *Recommend to add external capacitor 680 uF on this pin

OUTPUT RATINGS / CHARACTERISTICS - FAN OUTPUT
Nominal Output Voltage of Fan output	12 V
Nominal Output Current of Fan output	0.5 A
Total Regulation of Fan output	± 5%
PARD* (20 MHz) of Fan output	300 mV max
*PARD is measured with an AC coupling mode, and in parallel to end terminal with 0.1 μF ceramic capacitor & 22 μF electrolytic capacitor.

MECHANICAL
Casing		Aluminum
Dimensions (L x W x H)		165.3 × 85.2 × 41 mm (6.5 × 3.35 × 1.61 inch)
Unit Weight		0.66 kg (1.455 lb)
Cooling System		Built-in Fan
Terminal	Input Output CN600	M3.5 x 3 Pins (Rated 300 Vac/20 A) M4 x 2 Pins (Rated 300 Vac/25 A) Connector: JST S8B-PHDSS(LF)(SN) Mating connector: Crimp Terminal: SPHD-002T-P0.5 (#28 to #24 AWG) or equivalent SPHD-001T-P0.5 (#26 to #22 AWG) or equivalent Housing: PHDR-08VS
Wire		AWG 22-12
Noise (1 Meter from power supply)		Sound Pressure Level (SPL) < 60 dBA

ENVIRONMENT
Surrounding Air Temperature	Operating Storage	-20°C to +70°C 30°C to +80°C
AC De-rating		< 115 V de-rate power by 0.8% / V
Power De-rating		> 50°C de-rate power by 2.5% / °C
Operating Humidity		20 to 90% RH (Non-Condensing)
Operating Altitude		0 to 3,000 Meters (9,840 ft.) - IEC 60601-1 0 to 5,000 Meters (16,400 ft.) - IEC 60950-1 & IEC 62368-1
Shock Test	Operating	IEC60068-2-27, Half Sine Wave: 10 G for a duration of 11 ms, 3 shocks for each 3 directions
Vibration	Operating	IEC60068-2-6, Sine Wave: 10 Hz to 55 Hz@19.6 m/s2(2G peak); 10 min per cycle, 60 min per axis for all X,Y,Z direction
Pollution Degree		2

PROTECTIONS
Overvoltage	115-140% (27.6 – 33.6 V) 105-150% (5.25 – 7 V) Protection mode: Latch OFF
Overload / Over current	>105% rated full load current, Hiccup Mode, Non-Latching (Auto-Recovery when the fault is removed)
Over Temperature	Protection mode: Latch OFF
Short Circuit	Hiccup Mode, Non-Latching (Auto-Recovery when the fault is removed)
Protection Against Shock	Class I with PE* connection
*PE: Primary Earth

RELIABILITY DATA
MTBF	> 700,000 Hrs. Based on Telecordia SR-332 I/P: 115 Vac, O/P: 100% load, Ta: 25°C
Expected Cap Life Time	3 years (115 Vac, 100% load @ 50°C)

SAFETY STANDARDS/DIRECTIVES
Medical Safety		IEC 60601-1 CB report TUV EN 60601-1 UL 60601-1 + ANSI/AAMI ES60601-1 + CAN/CSA 60601-1
ITE Safety		IEC 60950-1 & IEC 62368-1 CB report TUV 60950-1 UL 60950-1 + CAN/CSA 60950-1 CCC GB 17625.1; GB 4943.1; GB/T 9254.1
CE		In conformance with EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU EN 60601-1: 2006 + A11: 2011 + A1: 2013 + A12: 2014 & EN 60601-1-2: 2015
UKCA		In conformance with Electrical Equipment (Safety) Regulations 2016, and Electromagnetic Compatibility Regulations 2016, Medical Devices Regulations 2002(UK MDR 2002)
Galvanic Isolation	Input to Output (2XMOPP) Input to Earth (1XMOPP) Output to Earth (1XMOPP)	4.0 KVac 1.5 KVac¹⁾ 1.5 KVac (Type BF application rated)
1) PSU can support Primary to FG 2500 Vac test condition according to IEC 62368-1.

EMC
Emissions (CE & RE)		EN/BS EN 55011 & compliant with EN/BS EN 55032, FCC Title 47: Class B
Harmonic Current Emissions	IEC 61000-3-2	Meet Class A limit
Immunity
Electrostatic Discharge	IEC 61000-4-2	Level 4 Criteria A¹⁾ Air Discharge: 15 kV Contact Discharge: 8 kV
Radiated Field	IEC 61000-4-3	Criteria A¹⁾ 80 MHz-2700 MHz, 10 V/m AM modulation 385 MHz-5785 MHz, 28 V/m Pulse mode and other Modulation
Electrical Fast Transient / Burst	IEC 61000-4-4	Level 3 Criteria A¹⁾ 2 kV
Surge	IEC 61000-4-5	Level 3 Criteria A¹⁾ ⁵⁾ Common Mode³⁾: 2 kV Differential Mode⁴⁾: 1 kV
Conducted	IEC 61000-4-6	Level 2 Criteria A¹⁾ 150 kHz-80 MHz, 3 Vrms, 6 Vrms at ISM bands
Power Frequency Magnetic Fields	IEC 61000-4-8	Criteria A¹⁾ Magnetic field strength 30 A/m
Voltage Dips	IEC 61000-4-11	Criteria A ¹⁾ 0% UT, 0.5 cycle(10 ms) 0°/45°/90°/135°/180°/225°/270°/315°/360° Criteria B ²⁾ 0% UT, 1 cycle (20 ms), 0° Criteria B ²⁾ 70% U T, 25 cycle (500 ms) , 0° Criteria B ²⁾ 0% U T, 250 cycle (5000 ms) , 0°
1) Criteria A: Normal performance within the specification limits 2) Criteria B: Output out of regulation, or shuts down during test. Automatically restore to normal operation after test. 3) Asymmetrical: Common mode (Line to earth) 4) Symmetrical: Differential mode (Line to line)

Technical Drawings

Downloads

Datasheet_MEB-500A24F_AA.pdf

Warranty & Returns

Warranty periods vary by product. Please refer to the Powerbox Warranty Policy for the applicable coverage period against manufacturing defects from date of purchase. For returns and RMA requests, please visit our RMA support page or contact our support team directly.

FAQs

Is the MEB-500A24F AA certified for medical equipment?

Yes, it's certified to IEC 60601-1 (with CB report), TUV EN 60601-1, and UL 60601-1 / ANSI/AAMI ES60601-1 / CAN/CSA 60601-1, making it suitable for use in medical devices and equipment.

What outputs does the MEB-500A24F AA provide?

It provides a main 24Vdc output (adjustable 21.6–26.4V) at up to 21A for 504W total, plus a 5V/1A standby output and a 12V/0.5A fan output for system auxiliary use.

What patient safety isolation does this power supply provide?

It provides 2 x MOPP (Means of Patient Protection) isolation with Type BF patient access leakage current compliance, meeting the safety requirements for equipment that may have patient contact.

What input voltage range does the MEB-500A24F AA accept?

It accepts a universal 90-264Vac input, suitable for use across different regional mains supplies without configuration.

How efficient is the MEB-500A24F AA?

It achieves approximately 92% typical efficiency at 230Vac, helping reduce heat generation and operating costs in continuous-use medical equipment.

Is this power supply also certified for non-medical industrial use?

Yes, in addition to the medical certifications it also holds IEC 60950-1 / IEC 62368-1 CB reports and UL 60950-1 certification, alongside CE, UKCA, and CCC marks for broader industrial and international compliance.

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