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Mean Well MSP-300-3.3 Power Supply 198W 3.3V 60A

built-in active PFCmedical safety approvedhigh efficiencyno load power consumption < 0.5~0.8W
SKU MSP-300-3.3
$129.06 USD
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Model

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MSP-300-3.3
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Overview

MSP-300-3.3 is the 3.3V output model of this series: rated current 60A, rated power 198W, typical efficiency 80%.

Features

  • Universal AC input / Full range
  • Built-in active PFC function, PF>0.95
  • High efficiency up to 89%
  • Withstand 300VAC surge input for 5 seconds
  • Protections: Short circuit / Overload / Over voltage / Over temperature
  • Built-in constant current limiting circuit
  • 1U low profile 41mm
  • Medical safety approved (MOOP level)
  • Built-in cooling fan ON-OFF control
  • Built-in DC OK signal
  • Built-in remote ON-OFF control
  • Standby 5V@0.3A
  • Built-in remote sense function
  • No load power consumption<0.5W (Note.6)
  • 5 years warranty

Specifications

MSP-300-3.3Specifications from the official datasheet (2026-02-09 edition)

OUTPUT

DC VOLTAGE
3.3V
RATED CURRENT
60A
CURRENT RANGE
0 ~ 60A
RATED POWER
198W
RIPPLE & NOISE (max.)Note.2
80mVp-p
VOLTAGE ADJ. RANGE
2.8 ~ 3.8V
VOLTAGE TOLERANCENote.3
±2.5%
LINE REGULATION
±0.5%
LOAD REGULATION
±1.0%
SETUP, RISE TIME
1000ms, 50ms/230VAC 2500ms, 50ms/115VAC at full load
HOLD UP TIME (Typ.)
16ms/230VAC 16ms/115VAC at full load

INPUT

VOLTAGE RANGENote.5
85 ~ 264VAC 120 ~ 370VDC
FREQUENCY RANGE
47 ~ 63Hz
POWER FACTOR (Typ.)
PF>0.95/230VAC PF>0.99/115VAC at full load
EFFICIENCY (Typ.)
80%
AC CURRENT (Typ.)
4.5A/115VAC 2.25A/230VAC
INRUSH CURRENT (Typ.)
35A/115VAC 70A/230VAC
LEAKAGE CURRENT
Earth leakage current < 450μA/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
3.96 ~ 4.62V 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 turns on : 3.3 ~ 5.6V ; PSU turns off : 0 ~ 1V
REMOTE CONTROL
RC+ / RC-: 4 ~ 10V or open = power on ; 0 ~ 0.8V or short = power off
FAN CONTROL (Typ.)
Load 35±15% 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
TEMP. COEFFICIENT
±0.03%/℃ (0 ~ 50℃)
VIBRATION
10 ~ 500Hz, 5G 10min./1cycle, 60min. each along X, Y, Z axes

SAFETY & EMC (Note 4)

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
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/ EN55035, BS EN/ EN60601-1-2 , EAC TP TC 020

OTHERS

MTBF
1337.5K hrs min. Telcordia SR-332 (Bellcore) ; 175.8K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
199*105*41mm (L*W*H)
PACKING
0.95Kg;15pcs/15.3Kg/0.83CUFT
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 0.1μF & 47μF 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 https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )
  5. 5. Derating may be needed under low input voltages. Please check the derating curve for more details.
  6. 6. No load power consumption<0.5W when RC- & RC+ (CN100 pin4,6) 0 ~ 8V or short.
  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

MSP-300-3.3 Mechanical Specification
Mechanical Specification
MSP-300-3.3 Block Diagram
Block Diagram
MSP-300-3.3 Derating Curve
Derating Curve
MSP-300-3.3 M S P - 3 0 0 series
M S P - 3 0 0 series
MSP-300-3.3 2.DC-OK Signal
2.DC-OK Signal
MSP-300-3.3 3.Remote Control
3.Remote Control

Downloads

FAQ

Can I use the MSP-300-3.3 for a 3.3V logic or processor rail in embedded equipment?

Yes, this model provides constant voltage 3.3V output rated at 198W and 60A. It is appropriate for high-current 3.3V embedded loads that require a regulated low-voltage rail.

Is the MSP-300-3.3 suitable for FPGA, memory, or backplane-style 3.3V loads?

It can be used where the equipment needs a stable 3.3V supply and the total demand stays within 198W and 60A. Its 60A rating, shared only with the MSP-300-5, is the highest output current in the MSP-300 series.

Can this unit support a 3.3V industrial controller or communications board assembly?

Yes, if the system is designed for constant voltage 3.3V input and remains within 60A and 198W. It also accepts 85-264VAC input, which helps when the AC source varies across installations.

Is the MSP-300-3.3 intended for outdoor use?

The operating temperature range is -40°C to +70°C, with output derating required per the datasheet's derating curve, but no IP rating is listed in the provided specifications. Based on that information, temperature tolerance is defined, while outdoor exposure protection is not.

How does the MSP-300-3.3 compare with the rest of the MSP-300 range?

In the MSP-300 lineup, the outputs are MSP-300-3.3 at 198W, 3.3V, 60A; MSP-300-5 at 300W, 5V, 60A; MSP-300-7.5 at 300W, 7.5V, 40A; MSP-300-12 at 324W, 12V, 27A; MSP-300-15 at 330W, 15V, 22A; MSP-300-24 at 336W, 24V, 14A; MSP-300-36 at 324W, 36V, 9A; and MSP-300-48 at 336W, 48V, 7A. This version is the lowest-voltage option and one of the highest-current options in that group.

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Other MSP-300 Models

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Mean Well MSP Series Power Supply 3.3V(100~600W) -  - powersupplymall.com
Mean Well

Mean Well MSP-300-3.3 Power Supply 198W 3.3V 60A

$129.06 USD

MSP-300-3.3 is the 3.3V output model of this series: rated current 60A, rated power 198W, typical efficiency 80%.

Features

  • Universal AC input / Full range
  • Built-in active PFC function, PF>0.95
  • High efficiency up to 89%
  • Withstand 300VAC surge input for 5 seconds
  • Protections: Short circuit / Overload / Over voltage / Over temperature
  • Built-in constant current limiting circuit
  • 1U low profile 41mm
  • Medical safety approved (MOOP level)
  • Built-in cooling fan ON-OFF control
  • Built-in DC OK signal
  • Built-in remote ON-OFF control
  • Standby 5V@0.3A
  • Built-in remote sense function
  • No load power consumption<0.5W (Note.6)
  • 5 years warranty

Model

  • 100W 3.3V
  • 200W 3.3V
  • 300W 3.3V
  • 450W 3.3V
  • 600W 3.3V
View product