AC/DC Power Supplies

Delta Electronics MEB-1K5A Series 1500W Medical / Industrial AC/DC Power Supply

The Delta MEB-1K5A series is an enclosed medical and industrial AC/DC power supply family with up to 1500 W output power and a built-in 5 V / 2 A standby output. The series accepts 90–264 Vac input and includes 24 Vdc and 48 Vdc terminal-input variants for high-power system applications. The Delta MEB-1K5A features include current sharing, confo...

The Delta MEB-1K5A features include current sharing, conformal coating, Class B conducted and radiated EMI, remote on/off control, analog voltage trimming, green LED indicator, and intelligent fan speed control. The series operates from -20°C to +70°C with derating above 50°C, supported by active fan cooling.

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Features

Input voltage range: 90-264Vac.
Output voltage: available in 24Vdc and 48Vdc variants, with 5V / 2A standby output.
Output current: 24V model 50.0A @ 115Vac / 62.5A @ 230Vac; 48V model 25.0A @ 115Vac / 31.25A @ 230Vac.
Output power: 1200W @ 115Vac and 1500W @ 230Vac.
Efficiency: 24V model 88% @ 115Vac and 91% @ 230Vac; 48V model 89% @ 115Vac and 92% @ 230Vac.
Current sharing supported for up to six power supplies in parallel.
Conformal coating.
Remote on/off control.
Analog voltage trimming up to ±10% of rated output.
Built-in intelligent fan speed control.
Green LED indicator.
Class B conducted and radiated EMI.

Specifications

INPUT RATINGS/CHARACTERISTICS
Model Number		MEB-1K5A24T AAA	MEB-1K5A48T AAA
Nominal Input Voltage		100-240 Vac
Input Voltage Range		90-264 Vac
Nominal Input Frequency		50-60 Hz
Input Frequency Range		47-63 Hz
Input Current (max)		15 A
Input Surge Voltage (max)		300 Vac for 500 ms
Efficiency (typ)	115 Vac 230 Vac	88% 91%	89% 92%
Inrush Current (typ)		40 A @ 264 Vac, cold start
Earth Leakage Current (Input to PE) (max)		0.5 mA @ NC, 1.0 mA @ SFC⁽⁵⁾ 0.2 mA @ NC, 0.4 mA @ SFC⁽⁶⁾	0.5 mA @ NC, 1.0 mA @ SFC⁽⁵⁾ 0.15 mA @ NC, 0.30 mA @ SFC⁽⁶⁾
Touch Current (Output to PE) (max)		0.1 mA @ NC, 0.5 mA @ SFC⁽⁵⁾ 0.1 mA @ NC, 0.2 mA @ SFC⁽⁶⁾
Power Factor (typ)		0.99 @ 115 V/60 Hz, full load 0.98@ 230 V/50 Hz, full load
(5) NC: normal condition, SFC: single fault condition, Label Rev.00 (6) NC: normal condition, SFC: single fault condition, Label Rev.01 and above

OUTPUT RATINGS/CHARACTERISTICS
Total Regulation		± 3%
Output Power (max)	115 Vac 230 Vac	1200 W 1500 W
Peak Power ( for MEB-1K5A48T AAA )		Output voltage >45 V @ 2200 W power boost for 300ms (Slew rate 0.1 A/ms, load change 1 A-45.83 A@ 230 Vac)
Line Regulation (max)		1%
Load Regulation (max)		2%
Ripple & Noise (typ.)	25°C	1% pk-pk Vrated@ rated load
Voltage Trimming		± 10% Vrated
Dynamic Response (Overshoot & Undershoot O/P Voltage)		± 10% @ with 5-100% load change
Start-up Time (typ)		1000 ms @ 115 Vac 500 ms @ 230 Vac
Hold-up Time (min)		16 ms @ 1200 W load, 115 Vac 12 ms @ 1500 W load, 230 Vac
Capacitive load (max)		6000 uF
Rise time (max)		<50 ms
Nominal Output Voltage of standby output (Vrated)		5 V
Nominal Output Current of standby output		2 A
Total Regulation of standby output		± 5%
Ripple & Noise of standby output		100 mV max

MECHANICAL
Package		Enclosed
Dimensions (W x L x H)		127 x 204 x 40.5 mm (5x8.03x1.59 inch)
Unit Weight		1.5 kg±0.2 kg (3.3 ±0.44 lb)
Indicator		Green LED
Terminal	INPUT OUTPUT	M4.0 x 3 Pins (Rated 300 V/25 A) M3.5 x 4 Pins (Rated 300 V/32 A)
Wire		10 ~ 12 AWG⁽⁷⁾ (2X) (FOR 48 V model) 8 AWG * (2X) (FOR 24 V model)
(7) Only use wire that can withstand operating temperature of more than 105°C.

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		20-90% 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 (Operating)		5-500 Hz, 2 Grms, 15 minute for each three axis
Acoustic Noise⁽⁸⁾ (typ) @ 10% load, 25°C Acoustic Noise (typ) @ 80% load, 25°C		30 dB 45 dB
(8) 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
Over load / Over current (max)	Main output 135% of rated current, constant current (for 24 V) Main output 145% of rated current (for 48V) Standby 4.0 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, 1200 W, 35 °C	500 Khrs based on Telecordia SR-332
Operating life(Minimum) at 115 Vac, 1000 W, 25°C	26,280 hrs

SAFETY STANDARDS/DIRECTIVES
Medical Safety	CB scheme TUV Bauart UL/cUL	IEC60601-1 3rd+A1+A2 edition CB report EN/ BS EN 60601-1:2006 ANSI/AAMI ES 60601-1+CAN/CSA-C22.2 No.60601-1: (Ed.3.2005)
ITE Safety	CB scheme CB scheme TUV Bauart UL/cUL CCC	IEC62368-1 CB report IEC60950-1 CB report EN/ BS EN 62368-1 UL62368-1+CAN/CSA62368-1 GB4943.1-2022, GB9254-2021, GB17625.1-2012
Household (for MEB-1K5A24T AAA)	CB scheme TUV Bauart	IEC 60335-1 CB report IEC 61558-1/ -2-16 CB report EN/ BS EN 60335-1 EN/ BS EN 61558-1 / -2-16
CE		In conformance with EN 60601-1: 2006 + A11: 2011 + A1: 2013 + A12: 2014& EN 60601-1-2: 2015
UKCA		In conformance with Electromagnetic Compatibility Regulations 2016 and Medical Devices Regulations 2002 (UK MDR 2002)
Galvanic Isolation	Input to/Output Input to/Ground Output to/Ground	4000 Vac 1500 Vac 1500 Vac

EMC
EMC / Emissions		EN / BS EN 55011, BS EN / EN/ BS EN 55032 : Class B EN/ BS EN 55014-1 ( for MEB-1K5A24T AAA) CISPR 11, CISPR 32 : Class B KS C 9832 Compliance to FCC Title 47 Class
Immunity to		BS EN / EN 55035, KS C 9835, EN/ BS EN 55014-2 ( for MEB-1K5A24T AAA)
Electrostatic Discharge	IEC 61000-4-2	Level 4 Criteria A⁽⁹⁾⁽¹³⁾ Air Discharge: 15 kV Contact Discharge: 8 kV
Radiated Field	IEC 61000-4-3	Criteria A⁽⁹⁾ 80 MHz-2700 MHz, 10 V/m AM modulation Level 2 Criteria A ⁽⁹⁾⁽¹³⁾ 385 MHz-5785 MHz, 28 V/m Pulse mode and other Modulation
Electrical Fast Transient / Burst	IEC 61000-4-4	Level 3 Criteria A⁽⁹⁾ 2 kV
Surge	IEC 61000-4-5	Level 3 Criteria A⁽⁹⁾⁽¹³⁾ Common Mode⁽¹¹⁾: 2 kV Differential Mode⁽¹²⁾: 1 kV
Conducted	IEC 61000-4-6	Level 2 Criteria A⁽⁹⁾⁽¹³⁾ 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 A⁽⁹⁾⁽¹³⁾ Magnetic field strength 30 A/m
Voltage Dips	IEC 61000-4-11	30% 10 ms Criteria A⁽⁹⁾ 60% 100 ms Criteria B⁽¹⁰⁾ 100% 5000 ms Criteria B⁽¹⁰⁾
Voltage Dips ⁵⁾	IEC 60601-1-2	Criteria A⁽⁹⁾ @1200 W 0% UT, 0.5 cycle(10 ms) (0°,45°,90°,135°,180°,225°,270°,315°,360°) Criteria B⁽¹⁰⁾,can meet Criteria A with 1000 W or lower load 0% UT, 1 cycle (20 ms), 0° Criteria B⁽¹⁰⁾ 70% U T, 25 cycle (500 ms) , 0° Criteria B⁽¹⁰⁾ 0% U T, 250 cycle (5000 ms), 0° Criteria B⁽¹⁰⁾
Harmonic Current Emissions	IEC/EN/BS EN 61000-3-2	Meet Class A limit
Voltage Fluctuation and Flicker	IEC/EN/BS EN 61000-3-3
(9) Criteria A: Normal performance within the specification limits (10) Criteria B: Output out of regulation, or shuts down during test. Automatically restored to normal operation after test. (11) Asymmetrical: Common mode (Line to earth) (12) Symmetrical: Differential mode (Line to line) (13) Compliant with IEC60601-1-2 4th Edition

Selection Table

MODEL NUMBER	INPUT VOLTAGE	OUTPUT VOLTAGE	OUTPUT CURRENT
MEB-1K5A24T	90-264 Vac⁽⁴⁾	24 Vdc	62.5 A
MEB-1K5A48T	90-264 Vac⁽⁴⁾	48 Vdc	31.25 A
(4) Derating is needed under low AC input, please refer to derating curve for more details.

Technical Drawings

Downloads

Datasheet_MEB-1K5A.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

What output specifications does the Delta MEB-1K5A Series provide?

The MEB-1K5A is available in 24Vdc (62.5A) and 48Vdc (31.25A) models at 1500W continuous output with approximately 92% efficiency — the highest-power model in the Delta MEB series. Universal 90–264Vac single-phase input with active PFC.

What certifications does the MEB-1K5A hold for medical and industrial applications?

Certified to IEC 60601-1 and UL 60601-1 / ANSI/AAMI ES60601-1 / CAN/CSA C22.2 No. 60601-1 for medical electrical equipment safety, and IEC 62368-1 for information and communication technology and audio/video equipment — making it dual-certified for both medical and industrial deployment.

How does the MEB-1K5A compare to the MEB-1K2A, and when should I choose it?

The MEB-1K5A (1500W) delivers 25% more output power than the MEB-1K2A (1200W). Both offer 24Vdc and 48Vdc outputs, PMBus interface, parallel operation, and the same enclosed panel-mount format with intelligent fan. Choose the MEB-1K5A when the load power budget exceeds approximately 1100W continuously or where growth headroom above the MEB-1K2A's rating is needed.

What digital control and monitoring capabilities does the MEB-1K5A include?

PMBus v1.3 digital interface for voltage adjustment, output monitoring, and fault reporting. Analogue ±10% voltage adjustment. Active current sharing for N+1 parallel redundancy or combined power scaling. Remote ON/OFF control in both normal and inverted logic — useful for interlock systems and sequenced power-up in complex equipment.

What is the medical isolation rating of the MEB-1K5A, and what does 2×MOPP mean?

The MEB-1K5A provides 2×MOPP (Means of Patient Protection) input-to-output isolation per IEC 60601-1 3rd edition. This requires leakage current levels low enough for devices that may be used on or near patients — a mandatory requirement for Class I medical devices under Australian TGA and IEC60601-1 compliance.

What efficiency and cooling does the MEB-1K5A use?

Approximately 92% typical efficiency at full load, 230Vac. Cooling is via an intelligent variable-speed fan that adjusts speed based on load and temperature — minimising audible noise under partial load while maintaining thermal performance at full power. Contact Powerbox at sales@powerbox.com.au for pricing, availability, and integration guidance.