# AC/DC Enclosed Power Supply (PSU), Medical, 1 Outputs, 450 W, 12 VDC, 37.5 A
**URL**: https://novapart.co/products/MSP-450-12/ac-dc-enclosed-power-supply-psu-medical-1-outputs
**SKU**: MSP-450-12
**Manufacturer**: MEAN WELL
**Category**: Power & Line Protection || Power Supplies || AC / DC Converters || AC / DC Enclosed Power Supplies
**Price**: €151.5800
**Stock**: 10+
**Lead Time**: 134 days (indicative)
## Specifications
| Parameter | Value |
|---|---|
| Svhc | No SVHC (25-Jun-2025) |
| Product Range | MSP-450 Series |
| No. Of Outputs | 1Outputs |
| Output Power Max | 450W |
| Current, Output 4 | - |
| Input Voltage Vac | 85V AC to 264V AC |
| Power Supply Output Type | Adjustable, Fixed |
| Output Current - Output 1 | 37.5A |
| Output Current - Output 2 | - |
| Output Current - Output 3 | - |
| Output Voltage - Output 1 | 12VDC |
| Output Voltage - Output 2 | - |
| Output Voltage - Output 3 | - |
| Output Voltage - Output 4 | - |
| Power Supply Applications | Medical |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:3253406/)
**MSP - 450 series**
MEAN WELL 450W Single Output Medical Type **- series** ~~eee~~
## | ■ 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.7) •5 years warranty
## **SPECIFICATION**
|**SPECIFICATION**|**SPECIFICATION**|||||||||
|---|---|---|---|---|---|---|---|---|---|
|**MODEL**||**MSP-450-3.3**|**MSP-450-5**|**MSP-450-7.5**|**MSP-450-12**|**MSP-450-15**|**MSP-450-24**|**MSP-450-36**|**MSP-450-48**|
|**OUTPUT**|**DC VOLTAGE**|3.3V|5V|7.5V|12V|15V|24V|36V|48V|
||**RATED CURRENT**|90A|90A|60A|37.5A|30A|18.8A|12.5A|9.5A|
||**CURRENT RANGE**|0 ~ 90A|0 ~ 90A|0 ~ 60A|0 ~ 37.5A|0 ~ 30A|0 ~ 18.8A|0 ~ 12.5A|0 ~ 9.5A|
||**RATED POWER**|297W|450W|450W|450W|450W|451.2W|450W|456W|
||**RIPPLE & NOISE (max.)Note.2**|80mVp-p|80mVp-p|100mVp-p|120mVp-p|150mVp-p|150mVp-p|240mVp-p|240mVp-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 TOLERANCENote.3**|±2.0%|±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, 100ms/230VAC 2500ms, 100ms/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%|83%|86.5%|88%|89%|88%|89%|89.5%|
||**AC CURRENT (Typ.)**|5A/115VAC 2.4A/230VAC||||||||
||**INRUSH CURRENT (Typ.)**|35A/115VAC 70A/230VAC||||||||
||**LEAKAGE CURRENT**|Earth leakage current < 300 A/264VAC , Touch leakage current < 100 A/264VAC
μ
μ||||||||
|**ENVIRONMENT**
**SAFETY &**
**FUNCTION**
**EMC**
**(Note 4)**
**OTHERS**
**PROTECTION**|**OVERLOAD**|105 ~ 135% rated outputpower||||||||
|||Protection type :Constant current limiting, recovers automatically after fault condition is removed||||||||
||**OVER VOLTAGE**|3.96 ~ 4.62V|6 ~ 7V|9.4 ~ 10.9V|14.4 ~ 16.8V|18.8 ~ 21.8V|30 ~ 34.8V|41.4 ~ 48.6V|57.6 ~ 67.2V|
|||Protection type : Shut down o/pvoltage,re-power on to recover||||||||
||**OVER TEMPERATURE**|95
5
for 5V ; 90
5
for 3.3V,7.5V,12V,15V ; 85
5
for 24V,36V,48V(TSW1)detect on heatsink of power transistor
℃± ℃
℃± ℃
℃± ℃||||||||
|||95
5
for 3.3V,5V,7.5V ; 90
5
for 12V,15V ; 80
5
for 24V,36V,48V(TSW2)detect on mainpower output choke
℃± ℃
℃± ℃
℃± ℃||||||||
|||Protection type : Shut down o/p voltage, recovers automatically after temperature goes down||||||||
||**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
±
≧
℃||||||||
||**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 STANDARDS**|ANSI/AAMI ES60601-1,IEC60601-1 approved||||||||
||**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 EN55011 (CISPR11) Class B, EN61000-3-2,-3||||||||
||**EMC IMMUNITY**|Compliance to EN61000-4-2,3,4,5,6,8,11, EN60601-1-2||||||||
||**MTBF**|159.3K hrs min. MIL-HDBK-217F(25
)
℃||||||||
||**DIMENSION**|218*105*41mm (L*W*H)||||||||
||**PACKING**|1.19Kg; 12pcs/15.3Kg/0.82CUFT||||||||
|**NOTE**|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 0.1uf & 47uf parallel capacitor.
3. Tolerance : includes set up tolerance, line regulation and load regulation.
4. The power supply is considered a component which will be installed into a final equipment. 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. Derating may be needed under low input voltages. Please check the derating curve for more details.
6. 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.
7. No load power consumption<0.5W when RC- & RC+ (CN100 pin1,2) 0 ~ 0.8V or short.
8. 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 safetyor essentialperformance.|||||||||
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. Tolerance : includes set up tolerance, line regulation and load regulation.
4. The power supply is considered a component which will be installed into a final equipment. 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. Derating may be needed under low input voltages. Please check the derating curve for more details.
6. 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.
7. No load power consumption<0.5W when RC- & RC+ (CN100 pin1,2) 0 ~ 0.8V or short.
8. 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.
_File Name:MSP-450-SPEC 2013-10-21_
**MSP - 450 series**
450W Single Output Medical Type
**==> picture [483 x 314] intentionally omitted <==**
**----- Start of picture text -----**
Mechanical Specification Case No. 995A Unit:mm
152.4 32.8
O/P
1
2
Air flow
direction FAN 3
4
I/P 5
1 6
2
3 4-M4 L=5 1 7
2 8
218
152.4 32.8
18max.
12max.
8-M4 L=4 (Both Sides)
AC Input Terminal Pin No. DC Output Terminal Pin No. Connector Pin No. Assignment(CN100) : HRS DF11-8DP-2DS or equivalent
Assignment Assignment Pin No. Assignment Pin No. Assignment Mating Housing Terminal
Pin No. Assignment Pin No. Assignment 1 RC+ 5 DC-OK
1 AC/L 1~3 -V 2 RC- 6 GND HRS DF11-8DS HRS DF11-**SC
2 AC/N 4~6 +V 3 AUX 7 +S or equivalent or equivalent
3 FG 4 AUXG 8 -S
**----- End of picture text -----**
**==> picture [482 x 320] intentionally omitted <==**
**----- Start of picture text -----**
Block Diagram PMW fosc : 70KHz
RECTIFIERS
AUX AUX
&
POWER AUXG
FILTER
+S
EMI INRUSHACTIVE RECTIFIERS POWER RECTIFIERS +V
I/P FILTER CURRENTLIMITING PFC& SWITCHING FILTER& -V
-S
DETECTION
O.T.P. O.L.P. CIRCUIT DC OK
FG
O.T.P.
PFC PWM O.V.P.
CONTROL CONTROL
REMOTE RC+
CONTROL RC-
Derating Curve Output Derating VS Input Voltage
125 100
90
100
80
80
70
50 60
50
20 40
-40 0 10 20 30 40 50 60 70 (HORIZONTAL) 85 100 125 135 155 264
AMBIENT TEMPERATURE ( ℃ ) INPUT VOLTAGE (V) 60Hz
**----- End of picture text -----**
_File Name:MSP-450-SPEC 2013-10-21_
**MSP - 450 series**
450W Single Output Medical Type
## **Function Description of CN100**
**==> picture [481 x 613] intentionally omitted <==**
**----- Start of picture text -----**
Pin No. Function Description
1 RC+ Turns the output on and off by electrical or dry contact between pin 2 (RC-), Short: Power OFF, Open: Power ON.
2 RC- Remote control ground.
Auxiliary voltage output, 4.75~5.25V, referenced to pin 4(AUXG). The maximum load current is 0.3A. This output has the built-in oring
3 AUX
diodes and is not controlled by the "remote ON/OFF control".
4 AUXG Auxiliary voltage output ground. The signal return is isolated from the output terminals (+V & -V).
5 DC-OK DC-OK Signal is a TTL level signal, referenced to pin6(DC-OK GND). High when PSU turns on.
6 GND This pin connects to the negative terminal(-V). Return for DC-OK signal output.
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
7 +S
minimize noise pick-up effect. The maximum line drop compensation is 0.5V.
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
8 -S
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. CN100
CN100
2 RC- RC+ 1
AUXG AUX
2 1
8 7 GND DC-OK
8 7
-S +S
+ -
+S -S
(Pin7) LOAD (Pin8)
Sense lines should
Fig 1. 1 be twisted in pairs
2.DC-OK Signal
DC-OK signal is a TTL level signal. High when PSU turns on.
CN100
Between DC-OK(pin5) and GND(pin6) Output Status
CN100
3.3 ~ 5.6V ON 2 RC- RC+ 1
0 ~ 1V OFF AUXG AUX
2 1
8 7 GND DC-OK
8 -S +S 7
Fig 2. 1
3.Remote Control
The PSU can be turned ON/OFF by using the
"Remote Control" function. CN100
2 1
CN100
Between RC+(pin1) and RC-(pin2) Output Status RC- RC+
SW ON (Short) OFF AUXG AUX
2 1
SW OFF (Open) ON 8 7 GND DC-OK
8 -S +S 7
SW
**----- End of picture text -----**
Fig 3. 1
_File Name:MSP-450-SPEC 2013-10-21_
## Links
- [View this product on Novapart](https://novapart.co/products/MSP-450-12/ac-dc-enclosed-power-supply-psu-medical-1-outputs)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/mean-well/msp-450-12/power-supply-ac-dc-12v-37-5a/dp/3253406)
---
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