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DIN rail power supply 120W 12V SDR-120-12

MEAN WELL power supplies are some of the most advanced and reliable devices on the market. MEAN WELL is a leader in the production of switching power supplies, DC/DC converters, inverters and battery chargers. MEAN WELL's offer includes power supplies for various applications, from industrial to medical, from LED to telecommunications.

SDR-120-12 is a switching power supply with a power of 120W and an output voltage of 12V. This is a DIN rail power supply, which means it can be easily mounted on a DIN rail in a switchboard cabinet or other location. This power supply is characterized by high efficiency up to 91%, low power consumption in the no-load state (less than 0.5 W) and a wide input voltage range from 85 to 264 VAC or from 120 to 370 VDC.

The MEAN WELL SDR-120-12 power supply belongs to the SDR series, which is characterized by high efficiency, long service life and resistance to overload up to 150% of the rated power. The MEAN WELL SDR-120-12 power supply has dimensions of 40 x 125.2 x 113.5 mm and weighs approximately 0.67 kg

The SDR-120-12 power supply has many protective functions, such as protection against overload, overvoltage, short circuit and overheating. This power supply is also shock and vibration resistant and meets the requirements of safety and electromagnetic compatibility standards. This power supply also has a built-in active PFC that improves power factor and reduces harmonic distortion.

The main features of the MEAN WELL SDR-120-12 power supply are:

- Output power 120 W and output voltage 12 V DC at 10 A current

- Possibility of overloading up to 150% of power (up to 3 sec) (7.5A)

- Active power factor correction (PFC) compliant with EN61000-3-2 PF>0.91

- Metal case with ultra-thin 40 mm width

- Universal input voltage AC 88 - 264 V or DC 124 - 370 V

- DC OK signal to monitor power status

- Protection against overload, overvoltage, short circuits and overheating

- UL, TUV, CB, CE and EMC safety certifications

- Manufacturer's warranty for 36 months


The SDR-120-12 power supply is ideal for applications requiring stable and safe power supply. You can use it to power electronic and industrial devices, automation, LED lighting, alarm and monitoring systems. This power supply has compact dimensions (63 x 125 x 113 mm) and is easily mounted on a DIN rail. The SDR-120-12 power supply meets safety and electromagnetic standards such as UL, TUV, CB, CE and EMC. The MEAN WELL SDR-120-12 power supply can be used to power devices with a power of up to 120 W and a voltage of 24V, such as PLC controllers, HMI panels, communication modules, frequency converters, fans, valves and many others. The MEAN WELL SDR-120-12 power supply provides stable and safe power supply for these devices, even in difficult operating conditions.


Output voltage:


Output power:


Output current:


Peak output current:


Output voltage regulation:

24 - 55V

Input voltage:

180 ~ 264VAC

Operating temperature: 

-25 - +70 C

Overload protection:

Yes (Hiccup)

Surge protection:

Yes (Hold & Restart)

Security certificates:

UL508, TUV EN62368-1 EAC TP TC 004 BSMI CNS14336-1 ;(meet BS EN/EN60204-1)

EMC standards

Compliance to EN55032 (CISPR32), EN61204-3 Class B, EN61000-3-2,-3, EAC TP TC 020, CNS13438 Class B


40 x 125.2 x 113.5mm




3 Years

20 Items

Data sheet

IP Level
3 Years