CUS150M-12

AC/DC Open Frame Power Supply (PSU), ITE & Medical, 1 Output, 150W, 120 W, 85V AC to 264V AC

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

Manufacturer: TDK-LAMBDA
Product type: AC / DC Open Frame Power Supplies
SVHC: No SVHC (15-Jan-2018)
Product Range: CUS150M Series
No. of Outputs: 1 Output
Input Voltage VAC: 85V AC to 264V AC
Power Supply Output Type: Fixed
Output Current - Output 1: 10A
Output Current - Output 2: -
Output Current - Output 3: -
Output Current - Output 4: -
Output Voltage - Output 1: 12VDC
Output Voltage - Output 2: -
Output Voltage - Output 3: -
Output Voltage - Output 4: -
Power Supply Applications: ITE & Medical
Power Rating (Forced Cooling): 150W
Power Rating (Convection Cooling): 120W

Delivery and price
Units per pack	50
Price	58.27 €
Current stock	10+
Lead time	30 days

Datasheet

CUS150M Series 

2 x 4” 150W AC-DC Power Supplies 

https://product.tdk.com/en/power/cus-m www.emea.lambda.tdk.com/cus150m 

The compact CUS150M is packaged in the industry standard 2x4” footprint.  The series can deliver 150W with forced air in ambient temperatures of up to 50[o] C or 120W convection cooled at 40[o] C. Conduction cooled, the CUS150M can deliver 150W at 50[o] C, 100W at 70[o] C and 50W at 80[o] C.  With Medical & ITE certifications, the unit can be used in both Class I & Class II (no ground wire) applications, and meets Class B Conducted and Radiated EMI. Enclosure options include baseplate, U channel, cover or top fan construction. 

|**Features**|**Benefits**|
|---|---|
|• Up to 150W Utilizing Convection or Conduction Cooling|• Quiet Operation|
|• Operation in Ambient Temperatures of up to 85°C|• Suitable for High Ambient Temperature Environments|
|• Medical Certifications (2 x MOPP)|• Suitable for B and BF Type Medical Equipment|
|• Class B Conducted and Radiated EMI|• Easier System EMC Compliance|
|• Suitable for Class I and Class II installations|• Flexible Utilisation|
|• Compact 2 x 4 x 1.24” Size|• Space Saving in End Equipment|
|• Enclosure & Cooling Options|• Versatile Application|



|**Model Selector**||||||||
|---|---|---|---|---|---|---|---|
||Nominal|Factory Set(1)|Fan|Maximum|Maximum|Maximum|Maximum|
|Model|Output|Output Voltage|Supply|Current|Current|Power|Power|
||Voltage (V)|Capability (V)|(V)|Convection (A)(2)|Forced Air (A)|Convection (W)(2)|Forced Air (W)|
|CUS150M-12 or /B|12|12 - 13.2|11.6|10|12.5|120|150|
|CUS150M-12/A or /U|12|12 - 13.2|11.6|12.5|12.5|150|150|
|CUS150M-12/F|12|-|11.6|12.5|Internal fan|150|Internal fan|
|CUS150M-15 or /B|15|15 - 16.5|9.8|8|10|120|150|
|CUS150M-15/A or /U|15|15 - 16.5|9.8|10|10|150|150|
|CUS150M-15/F|15|-|9.8|10|Internal fan|150|Internal fan|
|CUS150M-18 or /B|18|18 - 19.8|11.6|6.66|8.33|120|150|
|CUS150M-18/A or /U|18|18 - 19.8|11.6|8.33|8.33|150|150|
|CUS150M-18/F|18|-|11.6|8.33|Internal fan|150|Internal fan|
|CUS150M-24 or /B|24|24 - 26.4|11.6|5|6.25|120|150|
|CUS150M-24/A or /U|24|24 - 26.4|11.6|6.25|6.25|150|150|
|CUS150M-24/F|24|-|11.6|6.25|Internal fan|150|Internal fan|
|CUS150M-28 or /B|28|28 - 30.8|10.8|4.28|5.35|120|150|
|CUS150M-28/A or /U|28|28 - 30.8|10.8|5.35|5.35|150|150|
|CUS150M-28/F|28|-|10.8|5.35                       Internal fan|5.35                       Internal fan|150|Internal fan|
|CUS150M-36 or /B|36|36 - 39.6|11.6|3.33|4.16|120|150|
|CUS150M-36/A or /U|36|36 - 39.6|11.6|4.16|4.16|150|150|
|CUS150M-36/F|36|-|11.6|4.16|Internal fan|150|Internal fan|
|CUS150M-48 or /B|48|48 - 50|11.6|2.5|3.12|120|150|
|CUS150M-48/A or /U|48|48 - 50|11.6|3.12|3.12|150|150|
|CUS150M-48/F|48|-|11.6|3.12|Internal fan|150|Internal fan|



CUS150M Series 

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**==> picture [517 x 34] intentionally omitted <==**

|**CUS150M-**|**12**|**12**|**/**|||**U**|**U**||||**E**|**E**|||**M**|**M**||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|||||||||||||||||||
|Output voltage 12, 15, 18, 24, 28,||36, 48|||blank<br>U|open frame<br>U channel||||blank<br>E(3)|dual fuses<br>single input fuse in line||||blank JST connectors<br>M(3)Molex connectors|||
||||||A|U channel with cover||||||||||||
||||||B|baseplate||||||||||||
||||||F|U channel, cover and||||||||||||
|||||||top mounted fan||||||||||||



Examples: CUS150M-24/UE CUS150M-12V5/A. 

|**Specifcations**|**Specifcations**|**Specifcations**|
|---|---|---|
|Model<br>CUS150M|||
|**Input**|||
|Input Voltage range|Vac|85 - 264(4)|
|Input Frequency|Hz|47 - 63(5)|
|Input Current (100Vac)|A|2.2|
|Inrush Current at 230Vac (Cold Start)|A|<65|
|Leakage Current|uA|<250 at 230Vac 63Hz|
|Touch Current (Enclosure Leakage)|uA|<100|
|Power Factor (115/230Vac)|-|>0.98 / 0.92 (100% load)|
|Harmonic Compliance|-|Meets IEC61000-3-2 Class A, Class C >120W output|
|No Load Power Consumption|W|<0.5 (230Vac)|
|Hold Up Time<br>|ms|>18|
|Effciency<br>|%|Up to 94|
|Average Effciency|%|>91 Measured at 25%, 50%, 75% and 100% load conditions|
|Conducted & Radiated EMI|-|EN55032/EN55011-B (See application notes for conditions)|
|Immunity|-|Compliant with EN60601-1-2;2015 (Ed4), see immunity table|
|Insulation Class<br>|-|Construction suitable for Class I or Class II installation|
|Safety Certifcations and Markings|-|IEC/EN/UL/CSA62368-1, 60950-1, IEC/EN60601-1, ES60601-1, CE Mark and UKCA Mark<br>Designed to meet IEC61010-1 and EN60335-1 compliant versions are available(3)|



CUS150M Series 

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**==> picture [516 x 34] intentionally omitted <==**

|**Immunity**|**Immunity**|**Immunity**|**Immunity**|**Immunity**|
|---|---|---|---|---|
||||||
|Test|Standard|Test Level|Criteria|Notes (the power stated below is total power (main power + fan output))|
|ESD|EN61000-4-2|4|A|-<br>|
|Radiated Susceptibility|EN61000-4-3|3|A|Includes proximity feld requirements of EN60601-1-2:2015|
|Electrical Fast Transient Burst|EN61000-4-4|4|A|(AC Port, 5kHz and 100kHz)|
|Surge|EN61000-4-5|3|A|-|
|Conducted Susceptibility<br>|EN61000-4-6|3|A|-|
|Magnetic felds|EN61000-4-8|4|A|-|
|Voltage Dips and<br>Input Interuptions|EN61000-4-11<br>Class 3 Industrial,<br>incl EN55024<br>(100Vac)|0% for 1/2 cycle<br>0% for 1 cycle<br>40% for 10/12 cycles<br>70% for 25/30 cycles<br>80% for 250/300 cycles<br>0% for 250/300 cycles|A<br>A/B<br>B<br>A<br> <br>A<br>B|-<br>A up to 125W, B above 125W<br>-<br>-<br>-<br>-|
||EN61000-4-11<br>Class 3 Industrial,<br>incl EN55024<br>(240Vac)|<br>0% for 1/2 cycle<br>0% for 1 cycle<br>40% for 10/12 cycles<br>70% for 25/30 cycles<br>80% for 250/300 cycles<br>0% for 250/300 cycles|A<br>A/B<br>A/B<br>A<br> <br>A<br>B|-<br>A up to 125W, B above 125W<br>A up to 120W, B above 120W<br>-<br>-<br>-|
||EN60601-1-2:2015<br>(100Vac)|<br>0% for 1/2 cycle<br>0% for 1 cycle<br>70% for 25/30 cycles<br>0% for 250/300 cycles|A<br>A/B<br>A<br>B|-<br>A up to 125W, B above 125W<br>-<br>-|
||EN60601-1-2:2015<br>(240Vac)|<br>0% for 1/2 cycle<br>0% for 1 cycle<br>70% for 25/30 cycles<br>0% for 250/300 cycles|A<br>A/B<br>A<br>B|-<br>A up to 125W, B above 125W<br>-<br>-|
|Ringwave Test|EN61000-4-12|3|A|-|
|Voltage Fluctuations|EN61000-4-14|Class 3|A|-|
|SEMI F47 Line Dip|SEMI F47|-|-|Consult factory|



CUS150M Series 

3 

**==> picture [516 x 34] intentionally omitted <==**

|**Specifcations**|**Specifcations**|**Specifcations**|
|---|---|---|
|Model<br>CUS150M|||
|**Output**|||
|Line Regulation|%|<0.5 (90 - 264VAC)|
|Load Regulation|%|<1(0 - 100% load)|
|Ripple & Noise<br>|%|<1 of nominal output for operating temperatures above 0°C<br>At -20°C: 12V model <4, 15V & 18V model <3, other models <2|
|Temperature Coeffcient|%/°C|±0.02|
|Minimum Load|-|No minimum load required|
|Overcurrent Protection|%|110 to 170. Hiccup mode, automatic recovery|
|Overvoltage Protection|-|115-140% of standard output voltage for each model, 48V model max 60V.<br>Latching (unit shutdown), cycle AC input to reset|
|Remote Sense|-|None|
|Fan Supply|-|10 - 12V (see model selector), 0.5A, +14/-6% regulation|
|Parallel Operation|-|Not possible|
|Series Operation|-|Please contact Technical Sales for guidance|
|**Environmental**|||
|Operating Temperature (-30°C start-up)|°C|-20 to +85 (70 maximum for fan version /F), see derating curves below|
|Storage Temperature|°C|-40 to +85 (70 maximum for fan version /F)|
|Operating Humidity (non condensing)|%RH|5 - 95 (15 - 90 for /F fan version)|
|Cooling|-|Convection, conduction or forced air cooling. See derating curves below|
|Altitude|m|5,000|
|Withstand Voltage (For 1 minute)|Vac|Input to Ground 1,500 (1xMOPP), Input to Output 4,000 (2xMOPP),<br>Output to Ground 1,500 (1xMOPP)|
|Isolation Resistance|MΩ|>100 at 25°C, 70%RH & 500VDC|
|Vibration (non operating)|-|2G, 10-500Hz for 1 hour|
|Shock (non operating)|-|30G, 11ms half sine|
|**Other**|||
|Weight|g|Open frame: 185, /A: 260, /B: 225, /F: 270, /U: 245|
|Size (WxLxH)|mm|Open frame version: 50.8 x 101.6 x 31.5|
|Size (WxLxH)|Inches|Open frame version: 2 x 4 x 1.24|
|Connectors|-|Input: JST B2P3-VH, Output: JST B6P-VH, Fan: Molex 22-04-1021|
|Warranty|yrs|5|



Notes: See website for detailed specifications, test methods and installation manual. Specification parameters apply at 25°C ambient temperature unless otherwise stated. 

(1) Output voltage is factory set and not user adjustable.  Not applicable for /F (internal fan) version. Non-standard output versions may be subject to minimum order quantities and variations to specification. For all non-standard output voltage settings please consult Sales. 

(2) Please see curves below for ambient temperature ratings. 

(3) Subject to Minimum Order Quantities. Please contact Sales 

(4) Derate linearly to 90% load from 90 to 85VAC input. 

(5) For operation at 440Hz please consult Technical Sales. 

CUS150M Series 

4 

## **Outline Drawing CUS150M Open Frame Unit** 

CUS150M Series 

5 

## **Outline Drawing CUS150M/U (U Channel) Option** 

CUS150M Series 

6 

**==> picture [239 x 12] intentionally omitted <==**

**----- Start of picture text -----**<br>
Outline Drawing CUS150M/B (Baseplate) Option<br>**----- End of picture text -----**<br>


CUS150M Series 

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## **Outline Drawing CUS150M/A (U Channel with Cover) Option** 

CUS150M Series 

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**==> picture [396 x 12] intentionally omitted <==**

**----- Start of picture text -----**<br>
Outline Drawing CUS150M/F (U Channel with Cover & Top Mounted Fan) Option<br>**----- End of picture text -----**<br>


CUS150M Series 

9 

## **Output Power vs Ambient Temperature (Open Frame & /B Units)** 

Note (*1) 50mm above surface, see instruction manual for maximum component temperatures. 

## **Output Power vs Ambient Temperature (/U, /A and /B versions)** 

Note (*4) 50mm above surface, orientation A, no additional cold plate. See application note. Note (*5) U chassis or Baseplate fixed on a cold plate (system chassis). See application note. 

## **Output Power vs Ambient Temperature (/F version and Open Frame with Airflow)** 

Note (*2) Limited by fan specification to maximum of 70°C. Note (*3) See application note. 

CUS150M Series 

10 

## **CUS150M E-Cap Life vs Ambient Temperature** 

All models: Conduction cooling 150W, 100Vac, measured at 50˚C, other points are calculated 

**CUS150M E-Cap Life vs Ambient Temperature 12V model: Additional Cooling Options** 

Notes: CONV: Convection Cooling, CND: Conduction Cooling 

**CUS150M E-Cap Life vs Ambient Temperature 12, 15, 24, 36, 48: conv 110W, 75W, 18, 28: conv 120W, 75W** 

CUS150M Series 

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## **CUS150M Efficiency Graph** 

## **Critical component maximum allowable temperature table** 

|**Circuit reference**|**Description**|**Maximum temperature (˚C)**|
|---|---|---|
|1|Common mode choke|110 (130)|
|L2|PFC choke|125 (130)|
|L3|Differential mode choke|125 (130)|
|C1|Film capacitor|105|
|C2, C110|Electrolytic capacitors|86 (105)|
|C6, C102, C104, C105|Electrolytic capacitors|92 (105)|
|C3|X capacitor|100|
|C5, C100, C101, C103|Y capacitor|105|
|TX100|Transformer winding|110|
|XU101, XU102|Opto-coupler|100 (110)|
|XD8|Diode|130|
|J1|Input connector|105|
|J100|Output connector|105|



CUS150M Series 

12 

## **TDK-Lambda France SAS** 

Tel: +33 1 60 12 71 65 tlf.fr-powersolutions@tdk.com www.emea.lambda.tdk.com/fr 

## **Italy Sales Office** 

Tel +39 02 61 29 38 63 tlf.it-powersolutions@tdk.com www.emea.lambda.tdk.com/it 

## **Netherlands** 

tlf.nl-powersolutions@tdk.com www.emea.lambda.tdk.com/nl 

## **TDK-Lambda Europe GmbH** 

Tel: +49 7841 666 0 tlg.powersolutions@tdk.com www.emea.lambda.tdk.com/de 

## **Austria Sales Office** 

Tel: +43 2256 655 84 tlg.at-powersolutions@tdk.com www.emea.lambda.tdk.com/at 

## **Switzerland Sales Office** 

Tel: +41 44 850 53 53 tlg.ch-powersolutions@tdk.com www.emea.lambda.tdk.com/ch 

## **TDK-Lambda Americas** 

Tel:  +1 800-LAMBDA-4 or 1-800-526-2324 tla.powersolutions@tdk.com www.us.lambda.tdk.com 

## **TDK Electronics do Brasil Ltda** 

Tel: +55 11 3289-9599 sales.br@tdk-electronics.tdk.com www.tdk-electronics.tdk.com/en 

## **TDK-Lambda Corporation** 

Tel: +81-3-6778-1113 www.jp.lambda.tdk.com 

## **TDK-Lambda (China) Electronics Co. Ltd.** 

Tel: +86 21 6485-0777 tlc.powersolutions@tdk.com www.lambda.tdk.com.cn 

## **TDK-Lambda Singapore Pte Ltd.** 

Tel: +65 6251 7211 tls.marketing@tdk.com www.sg.lambda.tdk.com 

## **TDK India Private Limited, Power Supply Division** 

Tel:   +91 80 4039-0660 mathew.philip@tdk.com www.sg.lambda.tdk.com 

## **TDK-Lambda Europe GmbH** 

Tel: Tel. +45 3222 8086 tlg.dk-powersolutions@tdk.com www.emea.lambda.tdk.com/dk 

## **TDK-Lambda UK Ltd.** 

Tel: +44 (0) 12 71 85 66 66 tlu.powersolutions@tdk.com www.emea.lambda.tdk.com/uk 

## **TDK-Lambda Ltd.** 

Tel: +9 723 902 4333 tli.powersolutions@tdk.com www.emea.lambda.tdk.com/il-en 

For Additional Information, please visit ~~a~~ https://product.tdk.com/en/power/ 

CUS150M_260407 May 29th, 2025 V15 

CUS150M Series 

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Updated at April 27, 2026

TDK-Lambda is globally recognized as a premier manufacturer of highly reliable power supply solutions and power management equipment. With a strong engineering heritage, the company is a trusted partner for mission-critical applications across the industrial, medical, telecommunications, and test and measurement sectors, delivering components that meet stringent international performance and safety standards. Our extensive portfolio of TDK-Lambda products is heavily focused on comprehensive power and line protection, highlighted by a vast selection of industry-leading AC/DC converters. Engineered to deliver exceptional efficiency and stable performance in demanding environments, these power supplies form the backbone of our offering and are built to support the rigorous power demands of modern electronic infrastructure. To complement these primary power solutions, we also offer a targeted range of high-performance DC/DC converters designed for precise, board-level voltage regulation. Furthermore, to ensure the optimal performance and longevity of these power systems, our catalog includes specialized cooling and thermal management components, such as natural convection heat sinks, providing complete thermal stability for your most critical designs.

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