AC/DC Power Supplies

Delta Electronics MEB-750A Series Medical / Industrial AC/DC Power Supply

The Delta Electronics MEB-750A series are enclosed AC/DC power supplies designed for medical and industrial applications requiring high-density, high-power output with a dedicated 5 V / 2 A standby rail. Available in 12 Vdc, 24 Vdc and 48 Vdc output configurations, the series delivers up to 750 W continuous power (700 W for 12 V models) and up to 1200 W peak on the 48 V model — all within a compact 177.8 × 101.6 × 40 mm (7" × 4" × 1.575") enclosed package.

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Features

Input voltage range: 85-264Vac nominal operation.
Output voltage: main 24Vdc output with 5V / 2A standby output.
Output current: main output 0-31.25A, standby output 2A.
Output power: 750W maximum.
Efficiency: 92% typ. at 115Vac and 94% typ. at 230Vac for the 24V model.
2 x MOPP isolation and suited for Type BF medical products.

Specifications

INPUT RATINGS/CHARACTERISTICS
Nominal Input Voltage		100-240 Vac
Input Voltage Range		85-264 Vac
Nominal Input Frequency		50-60 Hz
Input Frequency Range		47-63 Hz
Input Current (max)		9 A
Full load Efficiency (typ.) (Exclude fan power)	For 12 V output Model For 24 V output Model For 48 V output Model	88% @ 115 Vac / 60 Hz 90.5% @ 230 Vac / 50 Hz, Reference Fig. 1 92% @ 115 Vac / 60 Hz 94% @ 230 Vac / 50 Hz Reference Fig. 2 91.5% @ 115 Vac / 60 Hz 94% @ 230 Vac / 50 Hz Reference Fig. 3
Inrush Current (max)		40 A @ 264 Vac, cold start
Input-PE (protective earth) leakage current (typ.)		0.3 mA @ NC, 1 mA @ SFC¹
Output-PE (protective earth) leakage current for Type BF application (max)		0.1 mA @ NC, 0.5 mA @ SFC¹
Power Factor (min)		0.95 @ 115 V / 50 Hz, 230 V / 50 Hz, full load
1. NC: normal condition, SFC: single fault condition

LEAKAGE CURRENT
Input-PE Leakage Current	100 Vac/60 Hz(Typ)	264 Vac/60 Hz(Typ)	Delta Limit	IEC60601-1 Limit
Normal Condition	108.5 uA	289.3 uA	300 uA max	5000 uA max
Single Fault Condition	211.4 uA	561.3 uA	1000 uA max	10000 uA max
Output-PE Leakage Current for Type BF application	-
Normal Condition	34 uA	89 uA	100 uA max	100 uA max
Single Fault Condition	70 uA	185 uA	500 uA max	500 uA max

OUTPUT RATINGS/CHARACTERISTICS
Total Regulation		± 3%
Output Power (max)	For 12 V output Model For 24 V/ 48 V output Model For 48 V output Model	700 W 750 W 1200 W peak for 0.5 sec, 0-25 A, Slew rate 0.1 A/ms, above 100 Vac
Line Regulation (max)		1%
Load Regulation (max)		2%
Ripple & Noise (typ.)		1% pk-pk Vrated@ rated load, Reference Fig. 4
Voltage Trimming Range	For 12 V output Model For 24 V/ 48 V output Model	12-14V ± 10% Vrated
Dynamic Response (Overshoot & Undershoot O/P Voltage)		± 5% @ with 50% load change
Start-up Time (max)		2000 ms with AC turn on
Hold-up Time (min)		12 ms@ 100% load, with nominal input range
Capacitive load (max)		6000 uF
Rise time (max)		<50 ms
Remote Sense		Up to 500 mV compensation for voltage drop across external wire connections to load. Short and reverse connection protected.
Nominal Output Voltage of standby output (Vrated)¹		5 V
Nominal Output Current of standby output		2 A
Total Regulation of standby output		± 3%
Ripple & Noise of standby output		100 mV max
1) 5V standby output is always on when AC is present

MECHANICAL
Package	Enclosed
Dimensions (L x W x H)	177.8 x 101.6 x 40 mm (7 x 4 x 1.575 inch)
Unit Weight	1.1 kg (2.4 lb)

ENVIRONMENT
Surrounding Air Temperature	Operating Storage	Absolute Maximum/Minimum Rating. -20°C to +70°C. Linear power derate from 100% load at 50°C, to 50% load at 70°C Note: see power de-rating curves below -40°C to +85°C
Operating Humidity		5-95% RH (Non-Condensing)
Operating Altitude		Up to 5,000 meters (up to 16,400 feet or 106-54 kPa)
Non-Operating Altitude		Up to 5,575 meters (up to 18,290 feet or 106-50 kPa)
Shock Test (Non-Operating)		50 G, 11 ms, 3 shocks for each direction
Vibration (Non-Operating)		5-500 Hz, 2 Grms, 15 minute for each three axis
Acoustic Noise (Typical)		45 dB test with 80% of rated load under 30°C²
2) Acoustic Noise test set up according to ISO-7779

PROTECTIONS (For both main output and 5 Volt Standby outputs, unless otherwise indicated)
Overvoltage (max)	Main output 145% of rated normal voltage, Latch Mode Standby 125% of rated voltage, Latch Mode
Over load / Over current (max)	Main output 130% max of rated current for over 750 ms max Standby 3.2 A max with Hiccup Mode(Non-Latching, Auto-Recovery)
Over Temperature	Latch Mode for Main output
Short Circuit	Hiccup Mode for Main output and Standby (Non-Latching, Auto-Recovery)

RELIABILITY DATA
MTBF (Minimum) at 115 Vac, 750 W (700 W for 12 V) , 35 °C	500 Khrs based on Telecordia SR-332
Operating life(Minimum) at 115 Vac, 750 W (700 W for 12 V), 25°C	26,280 hrs

SAFETY STANDARDS/DIRECTIVES
Medical Safety		IEC 60601-1 CB report TUV EN 60601-1 ANSI/AAMI ES 60601-1+CAN/CSA-C22.2 No.60601-1
ITE Safety		IEC 60950-1 CB report IEC 62368-1 CB report TUV EN 62368-1 TUV EN 60950-1 UL 62368-1 and CAN/CSA C22.2 No. 62368-1 CCC GB 17625.1; GB 4943.1; GB/T 9254.1 (for 24 V / 48 V model) KC/KCC (for 24V)
Home Appliance		IEC 60335-1 CB report (for 12 V / 24 V model) IEC 61558-1 CB report (for 12 V / 24 V model) IEC 61558-2-16 CB report (for 12 V / 24 V model) TUV EN 60335-1 (for 12 V / 24 V model) TUV EN 61558-1 (for 12 V / 24 V model) TUV EN 61558-2-16 (for 12 V / 24 V model)
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 Electromagnetic Compatibility Regulations 2016 and Electrical Equipment (Safety) Regulations 2016, Medical Devices Regulations 2002 (UK MDR 2002)
Galvanic Isolation	Input to/Output (2XMOPP) Input to/Ground (1XMOPP) Output to/Ground (1XMOPP)	4000 Vac 1500 Vac 1500 Vac (Type BF application rated)

EMC
EMC / Emissions		EN/BS EN 55011/EN/BS EN 55032: Class B
Harmonic Current Emissions	IEC 61000-3-2	Meet Class D limit
Voltage Flicker	IEC 61000-3-3
Immunity to
Electrostatic Discharge	IEC 61000-4-2	Level 4 Criteria A¹⁾ ⁵⁾ 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 Level 2 Criteria A ¹⁾ ⁵⁾ 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⁾ ⁵⁾ 150 kHz-80 MHz, 3 Vrms, 6 Vrms, 20 Vrms at ISM bands and Amateur radio bands
Power Frequency Magnetic Fields	IEC 61000-4-8	Criteria A¹⁾ ⁵⁾ Magnetic field strength 30 A/m
Voltage Dips	IEC 61000-4-11	30% 10 ms Criteria A¹⁾ 60% 100 ms Criteria B²⁾ 100% 5000 ms Criteria B²⁾
Voltage Dips ⁵⁾	IEC 60601-1-2	Criteria A ¹⁾ @ 650 W 0% UT, 0.5 cycle (10 ms) (0°,45°,90°,135°,180°,225°,270°,315°,360°) Criteria B ²⁾,can meet Criteria A with 400 W or lower load 0% UT, 1 cycle (20 ms), 0° Criteria B ²⁾ Can meet Criteria A with 500 W or lower load 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 restored to normal operation after test. 3) Asymmetrical: Common mode (Line to earth) 4) Symmetrical: Differential mode (Line to line) 5) Compliant with IEC60601-1-2 4th Edition

Selection Table

MODEL NUMBER	INPUT VOLTAGE	OUTPUT VOLTAGE	OUTPUT CURRENT
MEB-750A12B MEB-750A12T	85 Vac 90-264 Vac	12 Vdc	0-52.08 A 0-58.4 A
MEB-750A24B MEB-750A24T	85 Vac 90-264 Vac	24 Vdc	0-26.04 A 0-31.25 A
MEB-750A48B MEB-750A48T	85 Vac 90-264 Vac	48 Vdc	0-13.02 A 0-15.63 A

Technical Illustrations

Downloads

Datasheet_MEB-750A.pdf

INPUT RATINGS/CHARACTERISTICS
Nominal Input Voltage		100-240 Vac
Input Voltage Range		85-264 Vac
Nominal Input Frequency		50-60 Hz
Input Frequency Range		47-63 Hz
Input Current (max)		9 A
Full load Efficiency (typ.) (Exclude fan power)	For 12 V output Model For 24 V output Model For 48 V output Model	88% @ 115 Vac / 60 Hz 90.5% @ 230 Vac / 50 Hz, Reference Fig. 1 92% @ 115 Vac / 60 Hz 94% @ 230 Vac / 50 Hz Reference Fig. 2 91.5% @ 115 Vac / 60 Hz 94% @ 230 Vac / 50 Hz Reference Fig. 3
Inrush Current (max)		40 A @ 264 Vac, cold start
Input-PE (protective earth) leakage current (typ.)		0.3 mA @ NC, 1 mA @ SFC¹
Output-PE (protective earth) leakage current for Type BF application (max)		0.1 mA @ NC, 0.5 mA @ SFC¹
Power Factor (min)		0.95 @ 115 V / 50 Hz, 230 V / 50 Hz, full load
1. NC: normal condition, SFC: single fault condition

LEAKAGE CURRENT
Input-PE Leakage Current	100 Vac/60 Hz(Typ)	264 Vac/60 Hz(Typ)	Delta Limit	IEC60601-1 Limit
Normal Condition	108.5 uA	289.3 uA	300 uA max	5000 uA max
Single Fault Condition	211.4 uA	561.3 uA	1000 uA max	10000 uA max
Output-PE Leakage Current for Type BF application	-
Normal Condition	34 uA	89 uA	100 uA max	100 uA max
Single Fault Condition	70 uA	185 uA	500 uA max	500 uA max

OUTPUT RATINGS/CHARACTERISTICS
Total Regulation		± 3%
Output Power (max)	For 12 V output Model For 24 V/ 48 V output Model For 48 V output Model	700 W 750 W 1200 W peak for 0.5 sec, 0-25 A, Slew rate 0.1 A/ms, above 100 Vac
Line Regulation (max)		1%
Load Regulation (max)		2%
Ripple & Noise (typ.)		1% pk-pk Vrated@ rated load, Reference Fig. 4
Voltage Trimming Range	For 12 V output Model For 24 V/ 48 V output Model	12-14V ± 10% Vrated
Dynamic Response (Overshoot & Undershoot O/P Voltage)		± 5% @ with 50% load change
Start-up Time (max)		2000 ms with AC turn on
Hold-up Time (min)		12 ms@ 100% load, with nominal input range
Capacitive load (max)		6000 uF
Rise time (max)		<50 ms
Remote Sense		Up to 500 mV compensation for voltage drop across external wire connections to load. Short and reverse connection protected.
Nominal Output Voltage of standby output (Vrated)¹		5 V
Nominal Output Current of standby output		2 A
Total Regulation of standby output		± 3%
Ripple & Noise of standby output		100 mV max
1) 5V standby output is always on when AC is present

MECHANICAL
Package	Enclosed
Dimensions (L x W x H)	177.8 x 101.6 x 40 mm (7 x 4 x 1.575 inch)
Unit Weight	1.1 kg (2.4 lb)

ENVIRONMENT
Surrounding Air Temperature	Operating Storage	Absolute Maximum/Minimum Rating. -20°C to +70°C. Linear power derate from 100% load at 50°C, to 50% load at 70°C Note: see power de-rating curves below -40°C to +85°C
Operating Humidity		5-95% RH (Non-Condensing)
Operating Altitude		Up to 5,000 meters (up to 16,400 feet or 106-54 kPa)
Non-Operating Altitude		Up to 5,575 meters (up to 18,290 feet or 106-50 kPa)
Shock Test (Non-Operating)		50 G, 11 ms, 3 shocks for each direction
Vibration (Non-Operating)		5-500 Hz, 2 Grms, 15 minute for each three axis
Acoustic Noise (Typical)		45 dB test with 80% of rated load under 30°C²
2) Acoustic Noise test set up according to ISO-7779

PROTECTIONS (For both main output and 5 Volt Standby outputs, unless otherwise indicated)
Overvoltage (max)	Main output 145% of rated normal voltage, Latch Mode Standby 125% of rated voltage, Latch Mode
Over load / Over current (max)	Main output 130% max of rated current for over 750 ms max Standby 3.2 A max with Hiccup Mode(Non-Latching, Auto-Recovery)
Over Temperature	Latch Mode for Main output
Short Circuit	Hiccup Mode for Main output and Standby (Non-Latching, Auto-Recovery)

RELIABILITY DATA
MTBF (Minimum) at 115 Vac, 750 W (700 W for 12 V) , 35 °C	500 Khrs based on Telecordia SR-332
Operating life(Minimum) at 115 Vac, 750 W (700 W for 12 V), 25°C	26,280 hrs

SAFETY STANDARDS/DIRECTIVES
Medical Safety		IEC 60601-1 CB report TUV EN 60601-1 ANSI/AAMI ES 60601-1+CAN/CSA-C22.2 No.60601-1
ITE Safety		IEC 60950-1 CB report IEC 62368-1 CB report TUV EN 62368-1 TUV EN 60950-1 UL 62368-1 and CAN/CSA C22.2 No. 62368-1 CCC GB 17625.1; GB 4943.1; GB/T 9254.1 (for 24 V / 48 V model) KC/KCC (for 24V)
Home Appliance		IEC 60335-1 CB report (for 12 V / 24 V model) IEC 61558-1 CB report (for 12 V / 24 V model) IEC 61558-2-16 CB report (for 12 V / 24 V model) TUV EN 60335-1 (for 12 V / 24 V model) TUV EN 61558-1 (for 12 V / 24 V model) TUV EN 61558-2-16 (for 12 V / 24 V model)
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 Electromagnetic Compatibility Regulations 2016 and Electrical Equipment (Safety) Regulations 2016, Medical Devices Regulations 2002 (UK MDR 2002)
Galvanic Isolation	Input to/Output (2XMOPP) Input to/Ground (1XMOPP) Output to/Ground (1XMOPP)	4000 Vac 1500 Vac 1500 Vac (Type BF application rated)

EMC
EMC / Emissions		EN/BS EN 55011/EN/BS EN 55032: Class B
Harmonic Current Emissions	IEC 61000-3-2	Meet Class D limit
Voltage Flicker	IEC 61000-3-3
Immunity to
Electrostatic Discharge	IEC 61000-4-2	Level 4 Criteria A¹⁾ ⁵⁾ 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 Level 2 Criteria A ¹⁾ ⁵⁾ 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⁾ ⁵⁾ 150 kHz-80 MHz, 3 Vrms, 6 Vrms, 20 Vrms at ISM bands and Amateur radio bands
Power Frequency Magnetic Fields	IEC 61000-4-8	Criteria A¹⁾ ⁵⁾ Magnetic field strength 30 A/m
Voltage Dips	IEC 61000-4-11	30% 10 ms Criteria A¹⁾ 60% 100 ms Criteria B²⁾ 100% 5000 ms Criteria B²⁾
Voltage Dips ⁵⁾	IEC 60601-1-2	Criteria A ¹⁾ @ 650 W 0% UT, 0.5 cycle (10 ms) (0°,45°,90°,135°,180°,225°,270°,315°,360°) Criteria B ²⁾,can meet Criteria A with 400 W or lower load 0% UT, 1 cycle (20 ms), 0° Criteria B ²⁾ Can meet Criteria A with 500 W or lower load 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 restored to normal operation after test. 3) Asymmetrical: Common mode (Line to earth) 4) Symmetrical: Differential mode (Line to line) 5) Compliant with IEC60601-1-2 4th Edition

MODEL NUMBER	INPUT VOLTAGE	OUTPUT VOLTAGE	OUTPUT CURRENT
MEB-750A12B MEB-750A12T	85 Vac 90-264 Vac	12 Vdc	0-52.08 A 0-58.4 A
MEB-750A24B MEB-750A24T	85 Vac 90-264 Vac	24 Vdc	0-26.04 A 0-31.25 A
MEB-750A48B MEB-750A48T	85 Vac 90-264 Vac	48 Vdc	0-13.02 A 0-15.63 A

Datasheet_MEB-750A.pdf

Find the Right Model

Model Number	Input Voltage (Vac)	Output Voltage (Vdc)	Output Current (A)
MEB-750A12B	85 Vac	12 Vdc	0-52.08 A	Powerbox Website Product Enquiry Fill out the form below and one of our Powerbox specialists will be in contact with you shortly. First Name Last Name Phone Email Company Name Country State NSW VIC QLD SA WA NT ACT TAS Not applicable Please indicate the nature of your product enquiry: (You may select more than one) Pricing & Availability Technical Support / Application Guidance Product Documentation Other Industry Product you're enquiring about Product Model Need assistance MEB-750A12B MEB-750A12T MEB-750A24B MEB-750A24T MEB-750A48B MEB-750A48T Message (optional) Enquire Now
MEB-750A12T	90-264 Vac	12 Vdc	0-58.4 A	Powerbox Website Product Enquiry Fill out the form below and one of our Powerbox specialists will be in contact with you shortly. First Name Last Name Phone Email Company Name Country State NSW VIC QLD SA WA NT ACT TAS Not applicable Please indicate the nature of your product enquiry: (You may select more than one) Pricing & Availability Technical Support / Application Guidance Product Documentation Other Industry Product you're enquiring about Product Model Need assistance MEB-750A12B MEB-750A12T MEB-750A24B MEB-750A24T MEB-750A48B MEB-750A48T Message (optional) Enquire Now
MEB-750A24B	85 Vac	24 Vdc	0-26.04 A	Powerbox Website Product Enquiry Fill out the form below and one of our Powerbox specialists will be in contact with you shortly. First Name Last Name Phone Email Company Name Country State NSW VIC QLD SA WA NT ACT TAS Not applicable Please indicate the nature of your product enquiry: (You may select more than one) Pricing & Availability Technical Support / Application Guidance Product Documentation Other Industry Product you're enquiring about Product Model Need assistance MEB-750A12B MEB-750A12T MEB-750A24B MEB-750A24T MEB-750A48B MEB-750A48T Message (optional) Enquire Now
MEB-750A24T	90-264Vac	24 Vdc	0-31.25 A	Powerbox Website Product Enquiry Fill out the form below and one of our Powerbox specialists will be in contact with you shortly. First Name Last Name Phone Email Company Name Country State NSW VIC QLD SA WA NT ACT TAS Not applicable Please indicate the nature of your product enquiry: (You may select more than one) Pricing & Availability Technical Support / Application Guidance Product Documentation Other Industry Product you're enquiring about Product Model Need assistance MEB-750A12B MEB-750A12T MEB-750A24B MEB-750A24T MEB-750A48B MEB-750A48T Message (optional) Enquire Now
MEB-750A48B	85 Vac	48 Vdc	0-13.02 A	Powerbox Website Product Enquiry Fill out the form below and one of our Powerbox specialists will be in contact with you shortly. First Name Last Name Phone Email Company Name Country State NSW VIC QLD SA WA NT ACT TAS Not applicable Please indicate the nature of your product enquiry: (You may select more than one) Pricing & Availability Technical Support / Application Guidance Product Documentation Other Industry Product you're enquiring about Product Model Need assistance MEB-750A12B MEB-750A12T MEB-750A24B MEB-750A24T MEB-750A48B MEB-750A48T Message (optional) Enquire Now
MEB-750A48T	90-264 Vac	48 Vdc	0-15.63 A	Powerbox Website Product Enquiry Fill out the form below and one of our Powerbox specialists will be in contact with you shortly. First Name Last Name Phone Email Company Name Country State NSW VIC QLD SA WA NT ACT TAS Not applicable Please indicate the nature of your product enquiry: (You may select more than one) Pricing & Availability Technical Support / Application Guidance Product Documentation Other Industry Product you're enquiring about Product Model Need assistance MEB-750A12B MEB-750A12T MEB-750A24B MEB-750A24T MEB-750A48B MEB-750A48T Message (optional) Enquire Now

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Delta Electronics MEB-750A Series Medical / Industrial AC/DC Power Supply

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Delta Electronics MEB-750A Series Medical / Industrial AC/DC Power Supply

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Powerbox Website Product Enquiry

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Powerbox Website Product Enquiry

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Powerbox Website Product Enquiry

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