NFM-10-12 - Charger Mean Well - Free user manual and instructions

Product Type	Open Frame (PCB) Switching Power Supply
Model	NFM-10-12
Output Voltage	12 VDC
Output Current	0.83 A
Output Power	10 W
Input Voltage	85-264 VAC (universal)
Input Frequency	47-63 Hz
Efficiency	Typ. 76%
Protections	Short Circuit, Over Voltage, Over Load
Cooling Method	Free Air Convection
Operating Temperature	-20°C to +70°C (derating above 50°C)
Storage Temperature	-40°C to +85°C
Dimensions (L x W x H)	45.7 x 27.9 x 21.5 mm
Weight	27 g (approx.)
Mounting	PCB mount with M3 screws (4 pcs)
Insulation Distance	Min. 5 mm bottom, 10 mm general type around
Safety Standards	UL 62368, EN 62368, CB, CE
EMC Compliance	CISPR 32 Class B, EN 55032
Warranty	3 years
Application	Industrial, commercial, medical (with proper insulation)

Frequently Asked Questions - NFM-10-12 Mean Well

What is the input voltage range for the NFM-10-12?

The NFM-10-12 accepts a universal input voltage of 85-264 VAC at 47-63 Hz.

Can I use the NFM-10-12 for medical equipment?

Yes, but it requires proper insulation (15mm distance around the unit) and Mylar film at the bottom. The unit itself is designed for medical PCB applications, but you must verify EMC and safety with the end system.

How do I mount the NFM-10-12 power supply?

Mount using M3 screws on the PCB. Ensure at least 5mm insulation distance at the bottom (use Mylar film if needed) and 10mm clearance around the unit to avoid short circuits.

Does the NFM-10-12 have overvoltage protection?

Yes, it includes overvoltage protection (OVP) as well as short circuit and overload protections. The output voltage is clamped at approx. 13.8V.

What wire gauge should I use for the output?

For the NFM-10-12 (max 0.83A), AWG 18 wire is recommended. If using multiple wires, derate to 80% of the rated current per wire.

Can I operate the NFM-10-12 at 70°C ambient?

Yes, but the output current must be derated. Refer to the derating curve; typically, above 50°C you need to reduce load linearly.

What is the typical efficiency of the NFM-10-12?

The typical efficiency is 76% at full load and nominal input voltage.

How do I connect the ground?

Connect the FG (frame ground) terminal to earth ground. This is required for safety and EMC compliance.

Is the NFM-10-12 compliant with RoHS?

Yes, it is compliant with China RoHS and also meets EU RoHS requirements. The product does not contain hazardous substances above limits except lead in some components (exempted).

Where can I find detailed specifications?

Visit www.meanwell.com and search for NFM-10-12 for the full datasheet, including derating curves, EMC test reports, and mechanical drawings.

USER MANUAL NFM-10-12 Mean Well

● Type : Open Frame (PCB) Type Switching Power Supply

(Families: PM, NFM, IRM, MPS, MPD, MPT, MPQ, RPS, RPD, RPT, PS, PD, PT, PQ, PPS, PPT, PPQ, ASP, PID, LPS, LPP, EPS, ELP, EPP, MFM, MPM)

- Introduction

An open frame (PCB) type switching power supply is a power supply designed to be integrated or installed into a system enclosure. Mean Well's open frame (PCB) type power supplies include on board, general PCB, green PCB, and medical PCB types.

- Installation

(1) Before commencing any installation or maintenance work, please disconnect your system from the utility. Ensure that it cannot be re-connected inadvertently!
(2) At least 5mm insulation distance on the bottom of the unit should be kept and a Mylar film should be added between the unit and the system. In addition, keep enough insulation distance, 10mm for general type/15mm for medical type, around the unit.
(3) Power supplies greater than 120W may require a forced air/fan for cooling. Please refer to specifications to receive a minimum air intensity and air-flow direction.
(4) Allow good ventilation for the unit in use to prevent it from overheating. Also, a 10-15 cm clearance must be kept when the adjacent device is a heat source.
(5) Mounting orientations other than standard orientation or operate under high ambient temperature may increase the internal component temperature and will require a de-rating in output current. Please refer to the specification sheets to receive the optimum mounting position and information about the de-rating curve.
(6) Recommended wires are shown as below.

AWG	18		16	14		12
Rated Current of Equipment (Amp)	6A	6-10A	10-16A	16-25A	25-32A	1032-40A
Cross-section of Lead( mm^2 )	0.75	1.00	1.5		2.5	46
Note:Current each wire carries should be de-rated to 80% of the current suggested above when using 5 or more wires connected to the unit.

(7) For other information about the products, please refer to www.meanwell.com for details.

- Warning / Caution !!

(1) Risk of electrical shock and energy hazard. All failure should be examined by a qualified technician. Please do not try to fix the power supply by yourself!
(2) Please do not install power supplies in places with high moisture or near the water.
(3) Please do not install power supplies in places with high ambient temperature or near fire source. Please refer to the specifications about the maximum ambient temperature limitations.
(4) Output current and output wattage must not exceed the rated values on specifications.
(5) The ground (FG) must be connected to earth ground.
(6) All MW's PSUs are designed in accordance with EMC regulations and the related test reports are available by request. Since they are belong to component power supplies and will be installed inside system enclosure, when they are integrated into a system, the EMC characteristics of the end system must be re-verified again.

Manufacturer :

MEAN WELL ENTERPRISES Co., LTD.

No.28, Wuquan 3rd Rd., Wugu Dist.,

New Taipei City 24891, Taiwan

Tel: [phone]

Web: www.meanwell.com

Branch Office :

China

MEAN WELL (GUANGZHOU)

ENTERPRISES Co., LTD.

2F, A Building, Yuean Industry Park,

Huangcun, Dongpu Yown, Tianhe

District, Gungzhou, China

Post Code:510660

Tel: [phone]

Web: www.meanwell.com.cn

U.S.A.

MEAN WELL USA, INC.

44030 Fremont Blvd., Fremont,

CA 94538, U.S.A.

Tel: [phone]

Web: www.meanwellusa.com

Europe

MEAN WELL EUROPE B.V.

Langs de Werf 8, 1185XT

Amstelveen, The Netherlands

Tel: [phone]

Web: www.meanwell.eu

Declaration of China RoHS Conformity

In order to reduce the impacts on the environment and take the more responsibility for protecting the earth, MEAN WELL is confirming and announcing the conformity to China RoHS, an Administrative Measures for the Restriction of the Use of Hazardous Substances in Electrical and Electronic Products.

Environment Friendly Use Period Label

Observing SJT 11364-2014, Marking for the Restricted Use of Hazardous Substances in Electronic and Electrical ProductsObserving SJ/Z 11388-2009, General Guidelines of Environment-friendly Use Period of Electronic Information Products Appendix B, adopting table look-up to verify the Environment Friendly Use Period

Names and Contents of Hazardous Substances Lists

Part Name	Hazardous Substances
	Lead(Pb)	Mercury(Hg)	Cadmium(Cd)	Hexavalent chromium( Cr^6+ )	Polybrominated biphenyls(PBB)	Polybrominated diphenyl ethers(PBDE)
PCB and its components	X	O	X	O	O	O
Metal structure parts	X	O	O	O	O	O
Plastic structure parts	O	O	O	O	O	O
Accessories	O	O	O	O	O	O
Cables	X	O	O	O	O	O
O: The concentration of the hazardous substances within the homogeneous material of that product is less than the concentration limits set by GB/T 26572-2011.X: The concentration of the hazardous substances within the homogeneous material of that product is over the concentration limits set by GB/T 26572-2011; however, it follows the standard advised by 2011/65/EU.