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Mean Well

Mean Well PT-4503 Power Supply 45W 5V 5V 12V 4A

low leakage current < 0.5mAsmall and compact
SKU PT-4503
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End of Life, Succeeded by PT-6503
Available to order
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Overview

PT-4503 is the CH1: 3.3V / CH2: 5V / CH3: 12V output model of this series: rated current CH1: 4A / CH2: 4A / CH3: 1A, rated power Total power max. 45.2W(CH1+CH2 max. 35W), typical efficiency 72%.

Features

  • Universal AC input / Full range
  • Protections: Short circuit / Overload / Over voltage
  • Cooling by free air convection
  • 100% full load burn-in test
  • Fixed switching frequency at 65KHz
  • 2 years warranty

Specifications

PT-4503Specifications from the official datasheet (2021-09-15 edition)

OUTPUT

OUTPUT NUMBER
CH1 / CH2 / CH3
DC VOLTAGE
CH1: 3.3V / CH2: 5V / CH3: 12V
RATED CURRENT
CH1: 4A / CH2: 4A / CH3: 1A
CURRENT RANGE
CH1: 0 ~ 5A / CH2: 0.2 ~ 7A / CH3: 0 ~ 1.2A
RATED POWER
Total power max. 45.2W(CH1+CH2 max. 35W)
RIPPLE & NOISE (max.)Note.2
CH1: 50mVp-p / CH2: 50mVp-p / CH3: 100mVp-p
VOLTAGE ADJ. RANGE
CH1: 3 ~ 3.6V
VOLTAGE TOLERANCENote.3
CH1: ±2.0% / CH2: +4,-2% / CH3: ±8.0%
LINE REGULATION
CH1: ±1.0% / CH2: ±1.0% / CH3: ±2.0%
LOAD REGULATION
CH1: ±2.0% / CH2: ±2.0% / CH3: ±8.0%
SETUP, RISE TIME
800ms, 50ms at full load
HOLD UP TIME (Typ.)
60ms at full load

INPUT

VOLTAGE RANGE
90 ~ 264VAC 127 ~ 370VDC [DC input operation possible by connecting AC/N(-), AC/L(+)]
FREQUENCY RANGE
47 ~ 63Hz
EFFICIENCY (Typ.)
72%
AC CURRENT (Typ.)
1.2A/115VAC 0.7A/230VAC
INRUSH CURRENT (Typ.)
COLD START 20A/115V 40A/230V
LEAKAGE CURRENT
<1mA / 240VAC

PROTECTION

OVERLOAD
120 ~ 160% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE
5.75 ~ 6.75V on +5V 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
±0.03%/℃ (0 ~ 50℃)
VIBRATION
10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes

SAFETY & EMC (Note 4)

SAFETY STANDARDS
UL62368-1, TUV EN62368-1, EAC TP TC 004 approved
WITHSTAND VOLTAGE
I/P-O/P:3KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC 1min.
ISOLATION RESISTANCE
I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION
Compliance to EN55032 (CISPR32) Class B, EN61000-3-2,-3, EAC TP TC 020
EMC IMMUNITY
Compliance to EN61000-4-2,3,4,5,6,11, light industry level, criteria A, EAC TP TC 020

OTHERS

MTBF
220.9Khrs min. MIL-HDBK-217F (25℃)
DIMENSION
127*76*28mm (L*W*H)
PACKING
0.23Kg; 72pcs/17.6Kg/1.28CUFT
Test conditions and notes7
  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 0.1uf & 47uf 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. 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. 5. Mounting holes M1 and M2 should be grounded for EMI purposes.
  6. 6. Heat Sink HS1,HS2 can not be shorted.
  7. 7. 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

PT-4503 Mechanical Specification
Mechanical Specification
PT-4503 Block Diagram
Block Diagram
PT-4503 Derating Curve
Derating Curve

Downloads

FAQ

What are the main output ratings of the Mean Well PT-4503 power supply?

The Mean Well PT-4503 is a 45W open frame AC/DC power supply. The provided product data lists a 3.3V output voltage and 4.0A rated current for CH1, along with 5V/4A and 12V/1A outputs. It is designed for applications that need a compact multiple-output internal power supply.

What protections are included on the PT-4503?

This model includes short circuit, overload, and over-voltage protection. The description also states overload protection at 120% to 160% of rated output power and over-voltage protection at 5.75 ~ 6.75V on the +5V rail. These built-in protections help support reliable operation in commercial and industrial equipment.

What input range does the Mean Well PT-4503 support?

The PT-4503 supports universal AC input with a full range of 90 to 264VAC. It also supports 127 to 370VDC input per the provided specifications. That makes it suitable for equipment intended for use across different standard power environments.

What operating temperature range is specified for the PT-4503?

The listed operating temperature range for this model is -10°C to 60°C. The unit is cooled by free air convection, so no fan is specified in the provided data. Buyers selecting a power supply for warmer enclosures should confirm their application stays within this stated range.

Is the PT-4503 a good fit for embedded OEM or industrial equipment?

Yes, this model is generally suited to embedded OEM and industrial use where an internal open frame AC/DC supply is needed. Its 45W rating, universal input range, convection cooling, and built-in protection features make it relevant for many B2B equipment applications. It is best matched to designs that require the output configuration associated with the PT-4503 model.

What warranty is provided for the Mean Well PT-4503?

The provided product data lists a 2-year warranty for the PT-4503. The description also explicitly states a 2 years warranty. This can be a useful differentiator for buyers comparing standard open frame power supplies in the same class.

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Mean Well PT-4503 Power Supply 45W 5V 5V 12V 4A
Mean Well

Mean Well PT-4503 Power Supply 45W 5V 5V 12V 4A

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PT-4503 is the CH1: 3.3V / CH2: 5V / CH3: 12V output model of this series: rated current CH1: 4A / CH2: 4A / CH3: 1A, rated power Total power max. 45.2W(CH1+CH2 max. 35W), typical efficiency 72%.

Features

  • Universal AC input / Full range
  • Protections: Short circuit / Overload / Over voltage
  • Cooling by free air convection
  • 100% full load burn-in test
  • Fixed switching frequency at 65KHz
  • 2 years warranty
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