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Mean Well MSP-450-48 Power Supply 456W 48V 9.5A
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Mean Well MSP-450-48 Power Supply 456W 48V 9.5A
Overview
MSP-450-48 is the 48V output model of this series: rated current 9.5A, rated power 456W, typical efficiency 89.5%.
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
OUTPUT
- DC VOLTAGE
- 48V
- RATED CURRENT
- 9.5A
- CURRENT RANGE
- 0 ~ 9.5A
- RATED POWER
- 456W
- RIPPLE & NOISE (max.)Note.2
- 240mVp-p
- VOLTAGE ADJ. RANGE
- 40.8 ~ 55.2V
- 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.)
- 89.5%
- 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
- 57.6 ~ 67.2V 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. 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. Derating may be needed under low input voltages. Please check the derating curve for more details.
- 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. No load power consumption<0.5W when RC- & RC+ (CN100 pin1,2) 0 ~ 0.8V or short.
- 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. 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. 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
Downloads
Datasheet1
Certificates3
Test reports1
Catalogues1
FAQ
Can I use the MSP-450-48 for 48V telecom or network power applications?
Yes, this model provides a constant 48V output at up to 9.5A and 456W. That specification is aligned with equipment designed for a regulated 48V DC supply in telecom or network environments.
Is the MSP-450-48 appropriate for 48V industrial control systems?
It is a fit for industrial control systems that require a constant voltage 48V rail and stay within 456W total load. The 9.5A output supports moderate-to-high power 48V equipment on a single supply.
Would the MSP-450-48 work for embedded or communications racks that run on 48V DC?
Yes, it can suit embedded or communications hardware built for 48V DC input, with available output up to 9.5A. The wide 85-264VAC input range also helps when the same platform is used in different regions.
Can this 48V power supply be used for centralized DC distribution in automation equipment?
It can be used where the downstream equipment is designed for 48V constant voltage distribution and the total demand remains within 456W. Its regulated 48V output is intended for fixed-voltage DC loads rather than lower-voltage rails.
Is the MSP-450-48 rated for outdoor service?
The unit is specified for operation from -40°C to +70°C, with output derating at higher ambient temperatures per the derating curve. However, no IP rating is listed in the provided specs, so the product data does not identify it as outdoor-rated.
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