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Mean Well MPS-45-48 Power Supply 45W 48V 1A

SKU MPS-45-48

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End of Life, Succeeded by RPS-45-48

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Overview

MPS-45-48 is the 48V output model of this series: rated current 1A, rated power 48W, typical efficiency 78%.

Features

Universal AC input / Full range
Low leakage current <250μA
Protections: Short circuit / Overload / Over voltage
Cooling by free air convection
Medical safety approved (2 x MOPP between primary to secondary)
100% full load burn-in test
Fixed switching frequency at 45KHz
3 years warranty

Specifications

MPS-45-48Specifications from the official datasheet (2021-09-15 edition)

OUTPUT

DC VOLTAGE: 48V
RATED CURRENT: 1A
CURRENT RANGE: 0 ~ 1.1A
RATED POWER: 48W
OUTPUT POWER (max.): 52W(+3.3V:35W)with 18CFM min. Forced air convection
RIPPLE & NOISE (max.)^Note.2: 100mVp-p
VOLTAGE ADJ. RANGE: 43.2 ~ 52.8V
VOLTAGE TOLERANCE^Note.3: ±2.0%
LINE REGULATION: ±1.0%
LOAD REGULATION: ±2.0%
SETUP, RISE TIME: 800ms, 30ms/230VAC 1200ms, 30ms/115VAC at full load
HOLD UP TIME (Typ.): 50ms/230VAC 16ms/115VAC at full load

INPUT

VOLTAGE RANGE: 90 ~ 264VAC 127 ~ 370VDC
FREQUENCY RANGE: 47 ~ 63Hz
EFFICIENCY(Typ.): 78%
AC CURRENT (Typ.): 1.2A/115VAC 0.7A/230VAC
INRUSH CURRENT (Typ.): COLD START 17A/115VAC 40A/230VAC
LEAKAGE CURRENT^Note.7: Earth leakage current < 250 μA/264VAC , Touch current < 60 μA/264VAC

PROTECTION

OVERLOAD: 53 ~ 75W (3.3V:36 ~ 55W) rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE: 55.2 ~ 64.8V Protection type : Hiccup mode, recovers automatically after fault condition is removed

ENVIRONMENT

WORKING TEMP.: -10 ~ +60℃ (Refer to "Derating Curve")
WORKING HUMIDITY: 20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY: -20 ~ +85℃, 10 ~ 95% RH
TEMP. COEFFICIENT: ±0.04%/℃ (0 ~ 50℃))
VIBRATION: 10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes

SAFETY & EMC (Note 4)

SAFETY STANDARDS: ANSI/AAMI ES60601-1, TUV EN60601-1, IEC60601-1 approved
ISOLATION LEVEL: Primary-Secondary: 2xMOPP, Primary-Earth:1xMOPP
WITHSTAND VOLTAGE: I/P-O/P:4KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC
ISOLATION RESISTANCE: I/P-O/P, I/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION: Compliance to EN55011 (CISPR11) Class B, EN61000-3-2,-3
EMC IMMUNITY: Compliance to EN61000-4-2,3,4,5,6,8,11, EN60601-1-2, medical level, criteria A

OTHERS

MTBF: 366.1Khrs min. MIL-HDBK-217F (25℃)
DIMENSION: 127*76*28mm (L*W*H)
PACKING: 0.18Kg; 72pcs/15.1Kg/1.28CUFT

Test conditions and notes7

1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.
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. 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. All the EMC tests are been executed by mounting the unit on a 360mm*360mm metal plate with 1mm of thickness. 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 http://www.meanwell.com)
5. Mounting holes M1 and M2 should be grounded for EMI purposes.
6. Heat Sink HS1,HS2 can not be shorted.
7. Touch current was measured from primary input to DC output.

Technical drawings

MPS-45-48 Mechanical Specification — Mechanical Specification

MPS-45-48 Derating Curve — Derating Curve

Downloads

Catalogues1

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the MPS-45-48 for 48V industrial communication or control equipment?

Yes, if the equipment is designed for constant 48V DC input and draws no more than 1A or 48W. That makes it suitable for lower-power 48V industrial communication hardware, interface modules, and control devices that need a regulated 48V rail. The 90-264VAC input also supports use across a wide range of AC supply conditions.

Is this a good fit for small 48V automation loads in a control cabinet?

It can be a fit for compact 48V automation loads when the total demand stays within 1A and 48W. This is most relevant for smaller control, signaling, or communications equipment that runs from a constant-voltage 48V supply. It is not intended for loads that require more than its 1A rated current.

Can the MPS-45-48 power a 48V embedded or telecom-style device?

It can, provided the device expects 48V constant voltage and its power draw remains at or below 48W. That makes it relevant for many compact 48V embedded systems and telecom-style electronics with modest current demand. Buyers should match both the 48V output and the 1A rated current to the load requirements.

Can this power supply be used in outdoor equipment?

The operating temperature is specified as -10°C to +60°C, but no IP rating is listed. Because ingress protection is not stated, outdoor or exposed use should not be assumed from the product specs alone. It is better suited to protected indoor environments or sealed enclosures that handle dust and moisture protection separately.

How does the MPS-45-48 compare with other 48V MPS models?

The MPS-45 sheet lists only one 48V model: the MPS-45-48, rated at 48W and 1A, the highest power in the MPS-45 series. The other MPS-45 versions cover 3.3V to 27V, from the MPS-45-3.3 at 26.4W and 8A to the MPS-45-27 at 45.9W and 1.7A. All share the same 90-264VAC input and 127*76*28mm size, so the main differences are output voltage and current.

Payment & Security

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Model	Power	Voltage	Current
Mean Well MPS-45-7.5 Power Supply 45W 7.5V 5.4A	40.5W	7.5V	5.4A	View
Mean Well MPS-45-5 Power Supply 45W 5V 8A	40W	5V	8A	View
Mean Well MPS-45-3.3 Power Supply 45W 3.3V 8A	26.4W	3.3V	8A	View
Mean Well MPS-45-27 Power Supply 45W 27V 1.7A	45.9W	27V	1.7A	View
Mean Well MPS-45-24 Power Supply 45W 24V 1.9A	45.6W	24V	1.9A	View
Mean Well MPS-45-15 Power Supply 45W 15V 3A	45W	15V	3A	View
Mean Well MPS-45-13.5 Power Supply 45W 13.5V 3.3A	44.55W	13.5V	3.3A	View
Mean Well MPS-45-12 Power Supply 45W 12V 3.7A	44.4W	12V	3.7A	View

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Mean Well MPS-45-48 Power Supply 45W 48V 1A

Overview

Features

Specifications

OUTPUT

INPUT

PROTECTION

ENVIRONMENT

SAFETY & EMC (Note 4)

OTHERS

Technical drawings

Downloads

Catalogues1

FAQ

Payment & Security

Other MPS-45 Models

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Mean Well MPS-45-48 Power Supply 45W 48V 1A

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