MSP-300-3.3

AC/DC Enclosed Power Supply (PSU), 120 to 370VDC, Medical, 1 Outputs, 198 W, 3.3 VDC, 60 A

⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.

Manufacturer: MEAN WELL
Product type: AC / DC Enclosed Power Supplies
SVHC: No SVHC (25-Jun-2025)
Product Range: MSP-300 Series
No. of Outputs: 1Outputs
Output Power Max: 198W
Input Voltage VAC: 85V AC to 264V AC
Power Supply Output Type: Adjustable, Fixed
Output Current - Output 1: 60A
Output Current - Output 2: -
Output Current - Output 3: -
Output Current - Output 4: -
Output Voltage - Output 1: 3.3VDC
Output Voltage - Output 2: -
Output Voltage - Output 3: -
Output Voltage - Output 4: -
Power Supply Applications: Medical

Delivery and price
Units per pack	1
Price	105.61 €
Current stock	10+
Lead time	30 days

Datasheet

**MSP - 300 series** 

300W Single Output Medical Type MEAN WELL ~~Cee~~ 

■ 

## **SPECIFICATION** 

|**SPECIFICATION**<br>"eyewear<br>@® Whis<br>CBC€ FAL<br>C<br>US|**SPECIFICATION**<br>"eyewear<br>@® Whis<br>CBC€ FAL<br>C<br>US|||"eyewear|"eyewear|@®|@® Whis<br>C|Whis<br>CBC<br>US|CBC€ FAL|
|---|---|---|---|---|---|---|---|---|---|
|**MSP-300-3.3**<br>**MSP-300-5**<br>**MSP-300-7.5**<br>**MSP-300-12**<br>**MSP-300-15**<br>**MSP-300-24**<br>**MSP-300-36**<br>**MSP-300-48**<br>**MODEL**<br>**DC VOLTAGE**<br>**RATED CURRENT**<br>**CURRENT RANGE**<br>**RATED POWER**<br>**RIPPLE & NOISE (max.) Note.2**<br>**OUTPUT**<br>**VOLTAGE ADJ. RANGE**<br>**VOLTAGE TOLERANCE Note.3**<br>**LINE REGULATION**<br>**LOAD REGULATION**<br>**SETUP, RISE TIME**<br>**HOLD UP TIME (Typ.)**<br>**VOLTAGE RANGE**<br>**Note.5**<br>**FREQUENCY RANGE**<br>**POWER FACTOR (Typ.)**<br>**EFFICIENCY (Typ.)**<br>**INPUT**<br>**ENVIRONMENT**<br>**INRUSH CURRENT (Typ.)**<br>**LEAKAGE CURRENT**<br>**OVER TEMPERATURE**<br>**SAFETY STANDARDS**<br>**SAFETY &**<br>**EMC**<br>**(Note 4)**<br>**WITHSTAND VOLTAGE**<br>**ISOLATION RESISTANCE**<br>**WORKING TEMP.**<br>**DC OK SIGNAL**<br>**REMOTE CONTROL**<br>**WORKING HUMIDITY**<br>**STORAGE TEMP., HUMIDITY**<br>**TEMP. COEFFICIENT**<br>**VIBRATION**<br>**MTBF**<br>**DIMENSION**<br>**OTHERS**<br>**NOTE**<br>**PACKING**<br>**OVERLOAD**<br>**OVER VOLTAGE**<br>**PROTECTION**<br>**AC CURRENT (Typ.)**<br>3.3V<br>5V<br>7.5V<br>12V<br>15V<br>24V<br>36V<br>48V<br>60A<br>60A<br>40A<br>27A<br>22A<br>14A<br>9A<br>7A<br>0 ~ 60A<br>0 ~ 60A<br>0 ~ 40A<br>0 ~ 27A<br>0 ~ 22A<br>0 ~ 14A<br>0 ~ 9A<br>0 ~ 7A<br>198W<br>300W<br>300W<br>324W<br>330W<br>336W<br>324W<br>336W<br>80mVp-p<br>90mVp-p<br>100mVp-p<br>120mVp-p<br>150mVp-p<br>150mVp-p<br>250mVp-p<br>250mVp-p<br>2.8 ~ 3.8V<br>4.3 ~ 5.8V<br>6.8 ~ 9V<br>10.2 ~ 13.8V<br>13.5 ~ 18V<br>21.6 ~ 28.8V<br>28.8 ~ 39.6V<br>40.8 ~ 55.2V<br>±2.5%<br>±2.0%<br>±2.0%<br>±1.0%<br>±1.0%<br>±1.0%<br>±1.0%<br>±1.0%<br>±0.5%<br>±0.5%<br>±0.5%<br>±0.3%<br>±0.3%<br>±0.2%<br>±0.2%<br>±0.2%<br>±1.0%<br>±1.0%<br>±1.0%<br>±0.5%<br>±0.5%<br>±0.5%<br>±0.5%<br>±0.5%<br>1000ms, 50ms/230VAC          2500ms, 50ms/115VAC at full load<br>16ms/230VAC          16ms/115VAC at full load<br>85 ~ 264VAC          120 ~ 370VDC<br>47 ~ 63Hz<br>PF>0.95/230VAC          PF>0.99/115VAC at full load<br>80%<br>82%<br>6 ~ 7V<br>9.4 ~ 10.9V<br>14.4 ~ 16.8V<br>18.8 ~ 21.8V<br>30 ~ 34.8V<br>41.4 ~ 48.6V<br>57.6 ~ 67.2V<br>86%<br>88%<br>88%<br>87%<br>88%<br>89%<br>4.5A/115VAC        2.25A/230VAC<br>35A/115VAC          70A/230VAC<br>105 ~ 135% rated output power<br>3.96 ~ 4.62V<br>Protection type : Constant current limiting, recovers automatically after fault condition is removed<br>Protection type : Shut down o/p voltage, re-power on to recover<br>Shut down o/p voltage, recovers automatically after temperature goes down<br>ANSI/AAMI ES60601-1, IEC60601-1<br>approved<br>,EAC TP TC 004<br>Compliance to EN55011 (CISPR11) Class B, EN61000-3-2,-3, EAC TP TC 020<br>Compliance to EN61000-4-2,3,4,5,6,8,11, EN60601-1-2, EAC TP TC 020<br>I/P-O/P:4KVAC     I/P-FG:2KVAC     O/P-FG:0.5KVAC<br>I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25<br>/ 70% RH<br>℃<br>-40 ~ +70<br>(Refer to "Derating Curve")<br>℃<br>RC+ / RC-: 4 ~ 10V or open = power on ; 0 ~ 0.8V or short = power off<br>PSU turns on : 3.3 ~ 5.6V ; PSU turns off : 0 ~ 1V<br>20 ~ 90% RH non-condensing<br>-40 ~ +85<br>, 10 ~ 95% RH<br>℃<br>±<br>℃<br>℃<br>0.03%/<br>(0 ~ 50<br>)<br>10 ~ 500Hz, 5G 10min./1cycle, 60min. each along X, Y, Z axes<br>176Khrs min.      MIL-HDBK-217F (25<br>)<br>℃<br>199*105*41mm (L*W*H)<br>℃<br>℃<br>℃<br>**FUNCTION**<br>0.95Kg;15pcs/15.3Kg/0.69CUFT<br>**5V STANDBY**<br>5VSB : 5V@0.3A ; tolerance<br>5%, ripple : 50mVp-p(max.)<br>±<br>**FAN CONTROL (Typ.)**<br>Load 35<br>15% or RTH2<br>50<br>Fan on<br>±<br>≧<br>℃<br>**EMC IMMUNITY**<br>**EMC EMISSION**<br>Earth leakage current < 450 A/264VAC , Touch leakage current < 100 A/264VAC<br>μ<br>μ<br>**ISOLATION LEVEL**<br>Primary-Secondary: 2×MOOP, Primary-Earth: 1×MOOP<br>1. All parameters NOT specially mentioned are measured at230VAC input, rated load and 25 __ of ambient temperature.<br>2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor.<br>3. Tolerance: includes set up tolerance, line regulation and load regulation.<br>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<br>a360mm*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<br>perform these EMC tests, please refer to “EMI testing of component power supplies.” (as available on http://www.meanwell.com)<br>5. Derating may be needed under low input voltages. Please check the derating curve for more details.<br>6. No load power consumption<0.5W when RC- & RC+ (CN100 pin4,6) 0 ~ 8V or short.<br>7. The ambient temperature derating of 3.5<br>/1000m with fanless models and of<br>5<br>/1000m with fan models for operating altitude higher than 2000m(6500ft)||**MSP-300-3.3**|**MSP-300-5**|**MSP-300-7.5**|**MSP-300-12**|**MSP-300-15**|**MSP-300-24**|**MSP-300-36**|**MSP-300-48**|
||**DC VOLTAGE**|3.3V|5V|7.5V|12V|15V|24V|36V|48V|
||**RATED CURRENT**|60A|60A|40A|27A|22A|14A|9A|7A|
||**CURRENT RANGE**|0 ~ 60A|0 ~ 60A|0 ~ 40A|0 ~ 27A|0 ~ 22A|0 ~ 14A|0 ~ 9A|0 ~ 7A|
||**RATED POWER**|198W|300W|300W|324W|330W|336W|324W|336W|
||**RIPPLE & NOISE (max.) Note.2**|80mVp-p|90mVp-p|100mVp-p|120mVp-p|150mVp-p|150mVp-p|250mVp-p|250mVp-p|
||**VOLTAGE ADJ. RANGE**|2.8 ~ 3.8V|4.3 ~ 5.8V|6.8 ~ 9V|10.2 ~ 13.8V|13.5 ~ 18V|21.6 ~ 28.8V|28.8 ~ 39.6V|40.8 ~ 55.2V|
||**VOLTAGE TOLERANCE Note.3**|±2.5%|±2.0%|±2.0%|±1.0%|±1.0%|±1.0%|±1.0%|±1.0%|
||**LINE REGULATION**|±0.5%|±0.5%|±0.5%|±0.3%|±0.3%|±0.2%|±0.2%|±0.2%|
||**LOAD REGULATION**|±1.0%|±1.0%|±1.0%|±0.5%|±0.5%|±0.5%|±0.5%|±0.5%|
||**SETUP, RISE TIME**|1000ms, 50ms/230VAC          2500ms, 50ms/115VAC at full load||||||||
||**HOLD UP TIME (Typ.)**|16ms/230VAC          16ms/115VAC at full load||||||||
||**VOLTAGE RANGE**<br>**Note.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%|82%|86%|88%|88%|87%|88%|89%|
||**AC CURRENT (Typ.)**|4.5A/115VAC        2.25A/230VAC||||||||
||**INRUSH CURRENT (Typ.)**|35A/115VAC          70A/230VAC||||||||
||**LEAKAGE CURRENT**|Earth leakage current < 450 A/264VAC , Touch leakage current < 100 A/264VAC<br>μ<br>μ||||||||
||**OVERLOAD**|105 ~ 135% rated output power<br>Protection type : Constant current limiting, recovers automatically after fault condition is removed||||||||
||**OVER VOLTAGE**|6 ~ 7V<br>9.4 ~ 10.9V<br>14.4 ~ 16.8V<br>18.8 ~ 21.8V<br>30 ~ 34.8V<br>41.4 ~ 48.6V<br>57.6 ~ 67.2V<br>3.96 ~ 4.62V<br>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||||||||
||**5V STANDBY**|5VSB : 5V@0.3A ; tolerance<br>5%, ripple : 50mVp-p(max.)<br>±||||||||
||**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<br>15% or RTH2<br>50<br>Fan on<br>±<br>≧<br>℃||||||||
||**WORKING TEMP.**|-40 ~ +70<br>(Refer to "Derating Curve")<br>℃||||||||
||**WORKING HUMIDITY**|20 ~ 90% RH non-condensing||||||||
||**STORAGE TEMP., HUMIDITY**|-40 ~ +85<br>, 10 ~ 95% RH<br>℃||||||||
||**TEMP. COEFFICIENT**|±<br>℃<br>℃<br>0.03%/<br>(0 ~ 50<br>)||||||||
||**VIBRATION**|10 ~ 500Hz, 5G 10min./1cycle, 60min. each along X, Y, Z axes||||||||
||**SAFETY STANDARDS**|ANSI/AAMI ES60601-1, IEC60601-1<br>approved<br>,EAC TP TC 004||||||||
||**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<br>/ 70% RH<br>℃||||||||
||**EMC EMISSION**|Compliance to EN55011 (CISPR11) Class B, EN61000-3-2,-3, EAC TP TC 020||||||||
||**EMC IMMUNITY**|Compliance to EN61000-4-2,3,4,5,6,8,11, EN60601-1-2, EAC TP TC 020||||||||
||**MTBF**|176Khrs min.      MIL-HDBK-217F (25<br>)<br>℃||||||||
||**DIMENSION**|199*105*41mm (L*W*H)||||||||
||**PACKING**|0.95Kg;15pcs/15.3Kg/0.69CUFT||||||||
||℃<br>℃<br>℃<br>1. All parameters NOT specially mentioned are measured at230VAC input, rated load and 25 __ of ambient temperature.<br>2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor.<br>3. Tolerance: includes set up tolerance, line regulation and load regulation.<br>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<br>a360mm*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<br>perform these EMC tests, please refer to “EMI testing of component power supplies.” (as available on http://www.meanwell.com)<br>5. Derating may be needed under low input voltages. Please check the derating curve for more details.<br>6. No load power consumption<0.5W when RC- & RC+ (CN100 pin4,6) 0 ~ 8V or short.<br>7. The ambient temperature derating of 3.5<br>/1000m with fanless models and of<br>5<br>/1000m with fan models for operating altitude higher than 2000m(6500ft)|||||||||



℃ /1000m with fanless models and of 5 ℃ /1000m with fan models for operating altitude higher than 2000m(6500ft) _File Name:MSP-300-SPEC   2018-01-12_ 

## 300W Single Output Medical Type 

## **MSP - 300 series** 

**==> picture [511 x 668] intentionally omitted <==**

**----- Start of picture text -----**<br>
Mechanical Specification Case No.980A Unit:mm<br>4-M4 L=6<br>168.5 12.25<br>199<br>168.5 12.25<br>120 42.5<br>1<br>Terminal Pin No. Assignment 2 4-M4 L=5<br>Pin No. Assignment Pin No. Assignment 3<br>12 AC/NAC/L 46,7,5 DC OUTPUT -VDC OUTPUT +V 45 FAN Air flow<br>direction<br>3 FG 6<br>7<br>Connector Pin No. Assignment (CN100) : LED<br>CN100<br>HRS DF11-8DP-2DS or equivalent SVR<br>Pin No. Assignment Mating Housing Terminal<br>1 AUX<br>167.5 12.25<br>2 AUXG<br>3 DC-OK 167.5 12.25<br>4 RC- HRS DF11-8DS HRS DF11-**SC<br>17max.<br>5 GND or equivalent or equivalent<br>6 RC+<br>7 +S<br>8 -S 4-M4 L=6<br>Block Diagram PWM   fosc : 70KHz<br>AUX RECTIFIERS AUX<br>&<br>POWER AUXG<br>FILTER<br>+S<br>I/P FILTEREMI CURRENTLIMITINGINRUSHACTIVE RECTIFIERSPFC& SWITCHINGPOWER RECTIFIERSFILTER& +V-V<br>-S<br>O.T.P. O.L.P. DETECTION DC-OK<br>CIRCUIT<br>FG<br>O.V.P.<br>PFC PWM<br>CONTROL CONTROL<br>REMOTE RC+<br>CONTROL RC-<br>Derating Curve Output Derating VS Input Voltage<br>100<br>100<br>90<br>80<br>80<br>60 70<br>50<br>60<br>40<br>50<br>20<br>40<br>-40 0 10 20 30 40 50 60 70 (HORIZONTAL) 85 100 125 135 155 264<br>AMBIENT TEMPERATURE ( ℃ ) INPUT VOLTAGE (V) 60Hz<br>LOAD (%) LOAD(%)<br>12.5<br>18<br>11<br>9.2 75 105 125<br>15<br>18 41<br>12.5<br>2 1<br>8 7<br>**----- End of picture text -----**<br>


_File Name:MSP-300-SPEC   2018-01-12_ 

**MSP - 300 series** 

300W Single Output Medical Type 

## **Function Description of CN100** 

|**Pin No. **|**Function **|**Description**|
|---|---|---|
|1|AUX|Auxiliary voltage output, 4.75~5.25V, reference to pin 2(AUXG). The maximum load current is 0.3A. This output<br>not controlled by the "remote ON/OFF control".|
|2|AUXG|Auxiliary voltage output ground. The signal return is isolated from the output terminals (+V & -V).|
|3|DC-OK|DC-OK signal is a TTL level signal, referenced to pin5(DC-OK GND). High when PSU turns on.|
|4|RC-|Remote control ground.|
|5|GND|This pin connects to the negative terminal(-V). Return for DC-OK signal output.|
|6|RC+|Turns the output on and off by electrical or dry contact between pin 4 (RC-), Short: Power OFF, Open: Power ON.|
|7|+S|Positive sensing. The +S signal should be connected to the positive terminal of the load. The +S and -S leads should be twisted in pair to<br>minimize noise pick-up effect. The maximum line drop compensation is 0.5V.|
|8|-S|Negative sensing. The -S signal should be connected to the negative terminal of the load. The -S and +S leads should be twisted in pair to<br>minimize noise pick-up effect. The maximum line drop compensation is 0.5V.|



## **Function Manual** 

## **1.Remote Sense** 

The remote sensing compensates voltage drop on the 

load wiring up to 0.5V. 

**==> picture [462 x 316] intentionally omitted <==**

**----- Start of picture text -----**<br>
CN100<br>1 AUX DC-OK GND +S 7<br>1 2 3 4 5 6 7 CN100<br>2 AUXG RC- RC+ -S 8<br>1 7<br>2 8<br>-S LOAD +S Sense lines should<br>(Pin8) - + (Pin7) be twisted  in pairs<br>Fig 1.1<br>2.DC-OK Signal<br>DC-OK signal is a TTL level signal. High when PSU turns on.<br>Between DC-OK(pin6) and GND(pin4) Output Status<br>3.3 ~ 5.6V ON<br>0 ~ 1V OFF<br>CN100<br>1 AUX DC-OK GND +S 7<br>1 2 3 4 5 6 7 CN100<br>2 AUXG RC- RC+ -S 8<br>1 7<br>2 8<br>**----- End of picture text -----**<br>


## **2.DC-OK Signal** 

Fig 2.1 

_File Name:MSP-300-SPEC   2018-01-12_ 

**MSP - 300 series** 

## 300W Single Output Medical Type 

## **3.Remote Control** 

The PSU can be turned ON/OFF by using the "Remote 

ON/OFF" function 

**==> picture [275 x 191] intentionally omitted <==**

**----- Start of picture text -----**<br>
Between RC+(pin3) and RC-(pin5) Output Status<br>SW ON (Short) OFF<br>SW OFF (Open) ON<br>1 2 3 4 5 6 7 CN100<br>1 7<br>2 8<br>Fig 3.1<br>**----- End of picture text -----**<br>


**==> picture [94 x 70] intentionally omitted <==**

**----- Start of picture text -----**<br>
CN100<br>1 AUX DC-OK GND +S 7<br>2 AUXG RC- RC+ -S 8<br>SW<br>**----- End of picture text -----**<br>


_File Name:MSP-300-SPEC   2018-01-12_

Updated at June 6, 2026

About Novapart

Novapart is a B2B electronic component broker specialising in stock shortages and cost reduction. We source hard-to-find parts and identify compliant alternatives across a catalogue of 410,000+ components from 500+ manufacturers.

Learn more →

Stock Shortage Specialist

When a component is unavailable, discontinued or has an unacceptable lead time, we tap into our network of vetted European and Asian distributors to source what you need — without compromising on quality or traceability.

Request a quote →

Compliant Alternatives

We identify pin-to-pin, electrically equivalent substitutes that meet the same certifications (RoHS, AEC-Q100, REACH) as your original specification — validated against datasheets, not just part numbers. Often at a lower cost.

BOM Analysis service →