MEAN WELL MSP-450-12 Enclosed Power Supply, 12 V, 37.5 A, 450 W

At a glance

Output Voltage: 12 V
Rated Output Current: 37.5 A
Rated Output Power: 450 W
Input Voltage Range: 85 to 264 V AC, 120 to 370 V DC
Efficiency (typ.): 88%
Operating Temperature: -40 to +70 °C

Model MSP-450-12Current model

MEAN WELL MSP-450-12 Enclosed Power Supply, 12 V, 37.5 A, 450 W

Price on request

At a glance

Output Voltage: 12 V
Rated Output Current: 37.5 A
Rated Output Power: 450 W
Input Voltage Range: 85 to 264 V AC, 120 to 370 V DC
Efficiency (typ.): 88%
Operating Temperature: -40 to +70 °C

Medical type enclosed supply built into medical and other sensitive equipment that needs low leakage and strong isolation from the mains. 450 W enclosed power supply with a 12 V DC output rated at 37.5 A, for 85 to 264 V AC, 120 to 370 V DC input.

Output voltage

12 V15 V 24 V 48 V

Part of the MEAN WELL MSP-450 series. Compare all 4 models

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WarrantyManufacturer warranty under MEAN WELL's terms: 5 years. Warranty claims
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Overview

What it is

The MEAN WELL MSP-450-12 is a 450 W enclosed power supply from the MSP-450 series (450 W Single Output Medical Type). It provides a 12 V DC output with up to 37.5 A of rated current.

What it is used for

Enclosed supplies like this are mounted inside control panels, machines, LED signage and security equipment racks where a fixed DC rail is needed from mains power. MEAN WELL describes this series as a medical type; confirm the medical safety approvals for your equipment in the datasheet.

Key Specifications

Input range: 85 to 264 V AC, 120 to 370 V DC.
Output: 12 V, 37.5 A rated current, 450 W rated power.
Output voltage adjustable over 10.2 to 13.8 V.
Typical efficiency: 88%.
Operating temperature: -40 to +70 °C (see derating curve in datasheet).
Dimensions: 218 x 105 x 41 mm (L x W x H).

Buying considerations

Choose a rated current with headroom above the total load of the connected devices, and check the derating curve in the datasheet if the supply will run hot or at low input voltage. Other output voltages and power ratings in the same series are listed on this page.

Installation considerations

MEAN WELL treats this unit as a component to be installed inside final equipment, so approvals and EMC performance should be confirmed for the complete installation. Wiring, safety and EMC details are in the official datasheet linked below.

Features

MEAN WELL MSP-450-12 Enclosed Power Supply, 12 V, 37.5 A, 450 W, dimension drawing — Check the datasheet for tolerances.

Size and fit

Dimensions: 218 x 105 x 41 mm (L x W x H)
Weight: 1.19 kg
Mounting: Enclosed

Technical specifications

Key facts

What is it?: Enclosed power supplyBrand MEAN WELL, model MSP-450-12
What does it output?: 12 V, 37.5 A, 450 W
What input does it accept?: 85 to 264 V AC, 120 to 370 V DC
How does it mount?: Enclosed
Which documents are available?: Datasheet, certificate Open documents

Output

Output Voltage: 12 V
Rated Output Current: 37.5 A
Output Current Range: 0 to 37.5 A
Rated Output Power: 450 W
Output Voltage Adjustment Range: 10.2 to 13.8 V
Output Voltage Tolerance: ±1.0%
Ripple and Noise (max.): 120 mVp-p
Line Regulation: ±0.3%
Load Regulation: ±0.5%
Efficiency (typ.): 88%
Hold Up Time (typ.): 16 ms/230 V AC, 16 ms/115 V AC at full load

Input

Input Voltage Range: 85 to 264 V AC, 120 to 370 V DC
Input Frequency Range: 47 to 63 Hz
Power Factor (typ.): PF>0.95/230 V AC PF>0.99/115 V AC at full load

Protection

Withstand Voltage: I/P-O/P: 4 kV AC, I/P-FG: 2 kV AC, O/P-FG: 0.5 kV AC

Environment

Operating Temperature: -40 to +70 °C (see derating curve in datasheet)
Operating Humidity: 20 to 90% RH non-condensing

Physical

Dimensions: 218 x 105 x 41 mm (L x W x H)
Weight: 1.19 kg
Mounting: Enclosed

Approvals

MTBF: 159.3K hrs min. MIL-HDBK-217F (25 °C)

Other

Series: MSP-450

Warranty: Manufacturer warranty under MEAN WELL's terms: 5 years. How claims work

Product attributes and shipping details

Brand	MEAN WELL
Power Output	450 W

Wiring overview

Installation must be done by a qualified person, following the datasheet.

Downloads

Documentation

MSP-450 series datasheetPublicDatasheet · Family · meanwell.com
Download

Certificate and compliance document (1)

MSP-450 CE declaration of conformityPublicCertificate · Family · meanwell.com
Download

Series documents can differ from your exact model. Report a wrong or missing file

Questions about this product

What input voltage does the MSP-450-12 accept?

MEAN WELL lists an input range of 85 to 264 V AC, 120 to 370 V DC for the MSP-450 series.

Can the output voltage of the MSP-450-12 be adjusted?

Yes. The datasheet gives an adjustment range of 10.2 to 13.8 V.

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