Image shown is a representation only. Exact specifications should be obtained from the product datasheet.

Mean Well MPS-45-12 Power Supply 45W 12V 3.7A

SKU MPS-45-12

Log in to see price Trade pricing & online ordering for account holders

End of Life, Succeeded by RPS-45-12

Available to order

Overview

MPS-45-12 is the 12V output model of this series: rated current 3.7A, rated power 44.4W, typical efficiency 76%.

Features

Universal AC input / Full range
Low leakage current <250μA
Protections: Short circuit / Overload / Over voltage
Cooling by free air convection
Medical safety approved (2 x MOPP between primary to secondary)
100% full load burn-in test
Fixed switching frequency at 45KHz
3 years warranty

Specifications

MPS-45-12Specifications from the official datasheet (2021-09-15 edition)

OUTPUT

DC VOLTAGE: 12V
RATED CURRENT: 3.7A
CURRENT RANGE: 0 ~ 4.4A
RATED POWER: 44.4W
OUTPUT POWER (max.): 52W(+3.3V:35W)with 18CFM min. Forced air convection
RIPPLE & NOISE (max.)^Note.2: 100mVp-p
VOLTAGE ADJ. RANGE: 10.8 ~ 13.2V
VOLTAGE TOLERANCE^Note.3: ±2.0%
LINE REGULATION: ±1.0%
LOAD REGULATION: ±2.0%
SETUP, RISE TIME: 800ms, 30ms/230VAC 1200ms, 30ms/115VAC at full load
HOLD UP TIME (Typ.): 50ms/230VAC 16ms/115VAC at full load

INPUT

VOLTAGE RANGE: 90 ~ 264VAC 127 ~ 370VDC
FREQUENCY RANGE: 47 ~ 63Hz
EFFICIENCY(Typ.): 76%
AC CURRENT (Typ.): 1.2A/115VAC 0.7A/230VAC
INRUSH CURRENT (Typ.): COLD START 17A/115VAC 40A/230VAC
LEAKAGE CURRENT^Note.7: Earth leakage current < 250 μA/264VAC , Touch current < 60 μA/264VAC

PROTECTION

OVERLOAD: 53 ~ 75W (3.3V:36 ~ 55W) rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE: 13.8 ~ 16.2V Protection type : Hiccup mode, recovers automatically after fault condition is removed

ENVIRONMENT

WORKING TEMP.: -10 ~ +60℃ (Refer to "Derating Curve")
WORKING HUMIDITY: 20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY: -20 ~ +85℃, 10 ~ 95% RH
TEMP. COEFFICIENT: ±0.04%/℃ (0 ~ 50℃))
VIBRATION: 10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes

SAFETY & EMC (Note 4)

SAFETY STANDARDS: ANSI/AAMI ES60601-1, TUV EN60601-1, IEC60601-1 approved
ISOLATION LEVEL: Primary-Secondary: 2xMOPP, Primary-Earth:1xMOPP
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: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, medical level, criteria A

OTHERS

MTBF: 366.1Khrs min. MIL-HDBK-217F (25℃)
DIMENSION: 127*76*28mm (L*W*H)
PACKING: 0.18Kg; 72pcs/15.1Kg/1.28CUFT

Test conditions and notes7

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. 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 http://www.meanwell.com)
5. Mounting holes M1 and M2 should be grounded for EMI purposes.
6. Heat Sink HS1,HS2 can not be shorted.
7. Touch current was measured from primary input to DC output.

Technical drawings

MPS-45-12 Mechanical Specification — Mechanical Specification

MPS-45-12 Derating Curve — Derating Curve

Downloads

Catalogues1

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the MPS-45-12 for a small 12V industrial control panel or relay cabinet?

Yes, it is a constant-voltage 12V supply rated for 44.4W and 3.7A, which fits small 12V control loads that stay within those limits. Its 90-264VAC input also suits facilities that need a wide AC input range.

Is this power supply suitable for 12V embedded systems or HMI accessories?

It can be suitable for 12V embedded equipment that requires a regulated 12V constant-voltage source and draws no more than 3.7A or 44.4W. Buyers should match the load to the 12V output and stay within the published current and power rating.

Can I use this 12V model for low-power automation sensors, indicators, or small actuators?

For 12V automation devices, this model fits lower-power applications rated at 44.4W and 3.7A output current. That makes it more appropriate for smaller 12V loads than higher-demand 12V equipment.

Is the MPS-45-12 rated for outdoor or harsh wet locations?

The published specs list an operating temperature of -10°C to +60°C, but they do not list any IP rating. Based on the provided data, it is not specified here for direct outdoor weather exposure or washdown environments.

How does the MPS-45-12 compare with other MPS series power supplies?

This version is 44.4W at 12V and 3.7A. The other models on the MPS-45 sheet are MPS-45-3.3 26.4W 3.3V 8A, MPS-45-5 40W 5V 8A, MPS-45-7.5 40.5W 7.5V 5.4A, MPS-45-13.5 44.55W 13.5V 3.3A, MPS-45-15 45W 15V 3A, MPS-45-24 45.6W 24V 1.9A, MPS-45-27 45.9W 27V 1.7A, and MPS-45-48 48W 48V 1A. All share the 90-264VAC input, medical safety approvals and the 127*76*28mm size, so the main differences are output voltage, current and power.

Payment & Security

Payment methods

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Model	Power	Voltage	Current
Mean Well MPS-45-7.5 Power Supply 45W 7.5V 5.4A	40.5W	7.5V	5.4A	View
Mean Well MPS-45-5 Power Supply 45W 5V 8A	40W	5V	8A	View
Mean Well MPS-45-48 Power Supply 45W 48V 1A	48W	48V	1A	View
Mean Well MPS-45-3.3 Power Supply 45W 3.3V 8A	26.4W	3.3V	8A	View
Mean Well MPS-45-27 Power Supply 45W 27V 1.7A	45.9W	27V	1.7A	View
Mean Well MPS-45-24 Power Supply 45W 24V 1.9A	45.6W	24V	1.9A	View
Mean Well MPS-45-15 Power Supply 45W 15V 3A	45W	15V	3A	View
Mean Well MPS-45-13.5 Power Supply 45W 13.5V 3.3A	44.55W	13.5V	3.3A	View

Please log in to write a review.

{ "id":8430812463403, "variants" :[{ "context":"default", "variant_id": 45664083509547, "sku":"MPS-45-12", "inventory_qty" : 0, "customer" :false, "custom_html" :"\u003ca class=\"text-current logged-out-price logged-out\" href=\"https:\/\/wellforces.co.nz\/customer_authentication\/redirect?locale=en\u0026region_country=NZ\"\u003e\n \u003cspan \u003ePlease \u003c\/span\u003e \u003cspan class=\"login-text\"\u003eLogin\u003c\/span\u003e \u003cspan\u003e for Pricing\u003c\/span\u003e\n \u003c\/a\u003e", "volume_html" :"\u003cvolume-pricing class=\"parent-display inside_product_form\" id=\"volume-pricing-main\" \u003e\u003c\/volume-pricing\u003e" } ] }

Mean Well MPS-45-12 Power Supply 45W 12V 3.7A

Overview

Features

Specifications

OUTPUT

INPUT

PROTECTION

ENVIRONMENT

SAFETY & EMC (Note 4)

OTHERS

Technical drawings

Downloads

Catalogues1

FAQ

Payment & Security

Other MPS-45 Models

Write a review

Your cart

Mean Well MPS-45-12 Power Supply 45W 12V 3.7A

Features

Company Information

Services and Support

Choose options