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Mean Well

Mean Well MSP-450-24 Power Supply 451.2W 24V 18.8A

built-in active PFCmedical safety approvedhigh efficiencyno load power consumption < 0.5~0.8W
SKU MSP-450-24
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Select model — 6 in this family

MSP-450-24
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Overview

MSP-450-24 is the 24V output model of this series: rated current 18.8A, rated power 451.2W, typical efficiency 88%.

Features

  • Universal AC input / Full range
  • Built-in active PFC function, PF>0.95
  • High efficiency up to 89.5%
  • Withstand 300VAC surge input for 5 seconds
  • Protections: Short circuit / Overload / Over voltage / Over temperature
  • Built-in constant current limiting circuit
  • Medical safety approved (MOOP level)
  • Built-in cooling Fan ON-OFF control
  • Built-in DC OK signal
  • Built-in remote ON-OFF control
  • Stand by 5V@0.3A
  • Built-in remote sense function
  • No load power consumption<0.6W (Note.6)
  • 5 years warranty

Specifications

MSP-450-24Specifications from the official datasheet (2025-12-05 edition)

OUTPUT

DC VOLTAGE
24V
RATED CURRENT
18.8A
CURRENT RANGE
0 ~ 18.8A
RATED POWER
451.2W
RIPPLE & NOISE (max.)Note.2
150mVp-p
VOLTAGE ADJ. RANGE
21.6 ~ 28.8V
VOLTAGE TOLERANCENote.3
±1.0%
LINE REGULATION
±0.2%
LOAD REGULATION
±0.5%
SETUP, RISE TIME
1000ms, 100ms/230VAC 2500ms, 100ms/115VAC at full load
HOLD UP TIME (Typ.)
16ms/230VAC 16ms/115VAC at full load

INPUT

VOLTAGE RANGENote.4
85 ~ 264VAC 120 ~ 370VDC
FREQUENCY RANGE
47 ~ 63Hz
POWER FACTOR (Typ.)
PF>0.95/230VAC PF>0.99/115VAC at full load
EFFICIENCY (Typ.)
88%
AC CURRENT (Typ.)
5A/115VAC 2.4A/230VAC
INRUSH CURRENT (Typ.)
35A/115VAC 70A/230VAC
LEAKAGE CURRENT
Earth leakage current < 300μA/264VAC , Touch leakage current < 100μA/264VAC

PROTECTION

OVERLOAD
105 ~ 135% rated output power Protection type : Constant current limiting, recovers automatically after fault condition is removed
OVER VOLTAGE
30 ~ 34.8V Protection type : Shut down o/p voltage, re-power on to recover
OVER TEMPERATURE
Shut down o/p voltage, recovers automatically after temperature goes down

FUNCTION

5V STANDBY
5VSB : 5V@0.3A ; tolerance±5%, ripple : 50mVp-p(max.)
DC OK SIGNAL
PSU turn on : 3.3 ~ 5.6V ; PSU turn off : 0 ~ 1V
REMOTE CONTROL
RC+ / RC-: 4 ~ 10V or open = power on ; 0 ~ 0.8V or short = power off
FAN CONTROL (Typ.)
Load 20±10% or RTH2≧50℃ Fan on

ENVIRONMENT

WORKING TEMP.
-40 ~ +70℃ (Refer to "Derating Curve")
WORKING HUMIDITY
20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY
-40 ~ +85℃, 10 ~ 95% RH non-condensing
TEMP. COEFFICIENT
±0.03%/℃ (0 ~ 50℃)
VIBRATION
10 ~ 500Hz, 5G 10min./1cycle, 60min. each along X, Y, Z axes

SAFETY & EMC

SAFETY STANDARDS
IEC 60601-1:2005+A1+A2, ANSI/AAMI ES60601-1:2005+A2, CAN/CSA C22.2 No. 60601-1:2014+A2 EAC TP TC 004 approved;Design refer to BS EN/EN60335-1, BS EN/EN 62368-1(by request)
ISOLATION LEVEL
Primary-Secondary: 2×MOOP, Primary-Earth: 1×MOOP, Secondary-Earth: 1×MOOP
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, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION
Compliance to BS EN/EN55011 (CISPR11) Class B, BS EN/ EN61000-3-2,-3, EAC TP TC 020
EMC IMMUNITY
Compliance to BS EN/ EN61000-4-2,3,4,5,6,8,11, BS EN/ EN60601-1-2 , EAC TP TC 020

OTHERS

MTBF
159.3K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
218*105*41mm (L*W*H)
PACKING
1.19Kg; 12pcs/15.3Kg/0.81CUFT
Test conditions and notes9
  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 0.1μF & 47μF parallel capacitor.
  3. 3. Tolerance : includes set up tolerance, line regulation and load regulation.
  4. 4. Derating may be needed under low input voltages. Please check the derating curve for more details.
  5. 5. Length of set up time is measured at first cold start. Turning ON/OFF the power supply may lead to increase of the set up time.
  6. 6. No load power consumption<0.5W when RC- & RC+ (CN100 pin1,2) 0 ~ 0.8V or short.
  7. 7. When the input voltage is less than 40VAC, the SPS may exhibit degradation of performance. The final product manufacturers must re-confirm this deviation that does not affect basic safety or essential performance.
  8. 8. 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 https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )
  9. 9. 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

MSP-450-24 Mechanical Specification
Mechanical Specification
MSP-450-24 Block Diagram
Block Diagram
MSP-450-24 Derating Curve
Derating Curve
MSP-450-24 Function Manual
Function Manual

Downloads

FAQ

Can I use the MSP-450-24 for a 24V industrial automation cabinet?

Yes, this model is a constant voltage 24V supply rated for 451.2W and 18.8A. That makes it suitable for industrial automation systems and control cabinets built around a 24V DC power bus.

Is the MSP-450-24 suitable for PLC, sensor, and control loads that run on 24V?

It can be a fit when the combined load requires a regulated 24V output and stays within 451.2W and 18.8A. Those ratings align with many control and automation systems that standardize on 24V DC.

Can the MSP-450-24 power 24V HMI or embedded equipment in a machine build?

Yes, as long as the equipment is specified for 24V constant voltage input, this supply can deliver up to 18.8A. Its 451.2W capacity is useful when several 24V subsystems are fed from one centralized supply.

Does the MSP-450-24 work for cold or high-temperature indoor industrial spaces?

The specified operating range is -40°C to +70°C, with output derating at higher ambient temperatures per the derating curve. No IP rating is listed in the provided specs, so it should be used in protected locations rather than exposed outdoor environments.

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Mean Well MSP-450-24 Power Supply 451.2W 24V 18.8A
Mean Well

Mean Well MSP-450-24 Power Supply 451.2W 24V 18.8A

Log in to see price

MSP-450-24 is the 24V output model of this series: rated current 18.8A, rated power 451.2W, typical efficiency 88%.

Features

  • Universal AC input / Full range
  • Built-in active PFC function, PF>0.95
  • High efficiency up to 89.5%
  • Withstand 300VAC surge input for 5 seconds
  • Protections: Short circuit / Overload / Over voltage / Over temperature
  • Built-in constant current limiting circuit
  • Medical safety approved (MOOP level)
  • Built-in cooling Fan ON-OFF control
  • Built-in DC OK signal
  • Built-in remote ON-OFF control
  • Stand by 5V@0.3A
  • Built-in remote sense function
  • No load power consumption<0.6W (Note.6)
  • 5 years warranty

Model

  • 100W 24V
  • 1000W 24V
  • 200W 24V
  • 300W 24V
  • 450W 24V
  • 600W 24V
View product

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