MEAN WELL DDR-120B-12 120W 12V 10A DIN Rail

Part numberDDR-120B-12
Output voltage 12 V
Rated current 10 A
Rated power 120 W
$108.64Excluding tax and shipping
Ships in 3–5 business daysLead time is the time from order to dispatch, and does not include transit time.
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DDR-120 model selection table DDR Series
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Key specifications

Complete technical specifications
Output
Output voltage 12 V
Rated current 10 A
Rated power 120 W
Typical efficiency 89 %
Mechanical
Operating temperature -40 to 70 °C
Dimensions (L × W × H) 32 × 125.2 × 102 mm

Is this model right for you?

Within the DDR-120 series, the DDR-120B-12 lists 12 V, 10 A, 120 W, 16.8 ~ 33.6VDC input, 89%. By comparison DDR-120A-12 lists 12 V, 8.3 A, 99.6 W, 9 ~ 18VDC input, 88.5%; DDR-120A-24 lists 24 V, 4.2 A, 100.8 W, 9 ~ 18VDC input, 88.5%; DDR-120A-48 lists 48 V, 2.1 A, 100.8 W, 9 ~ 18VDC input, 88.5%; DDR-120B-24 lists 24 V, 5 A, 120 W, 16.8 ~ 33.6VDC input, 89.5%, and 7 further models. Select the model whose output voltage, output current, rated power, and input range match the installation.

Product overview

The DDR-120B-12 belongs to the MEAN WELL DDR-120 series and is classified as a DC/DC DIN Rail product. Its dimensions are 32 × 125.2 × 102 mm and its net weight is 510 g. The operating temperature range is -40 to 70 °C, and the humidity range is 5 to 95 %.

Where this model fits

The DDR-120B-12 is used in Industrial Automation. Its operating temperature range is -40 to 70 °C and its humidity range is 5 to 95 %. The product measures 32 × 125.2 × 102 mm and weighs 510 g.

Complete technical specifications

Rev. 2026-03-31
Output
Output voltage 12 V
Rated current 10 A
Rated power 120 W
Input
AC input range 16.8 ~ 33.6VDC
DC input range 16.8–33.6 VDC
Typical efficiency 89 %
Protection
Overload Protected
Over voltage Protected
Reverse polarity Protected
Shut down o/p voltage, re-power on to recover
Environmental
Operating temperature -40 to 70 °C
Storage temperature -40 to 85 °C
Operating humidity 5–95 % RH
Vibration Component:10 ~ 500Hz, 5G 10min./1cycle, 60min. each along X, Y, Z axes; Mounting: Compliance to IEC61373
Mechanical
Dimensions (L × W × H) 32 × 125.2 × 102 mm
Net weight 510.0 g
Safety & compliance
Safety standards IEC 62368-1, UL 62368-1, EAC TP TC 004, AS/NZS 62368.1 approved; Design refer to UL508

These approvals are recorded for the series as a whole. Where a line names particular models or ratings, it applies only to those — read it against this part number, and ask us for the certificate if your approval process needs it.

Identification
Part number DDR-120B-12
Brand MEAN WELL
Category DC/DC DIN Rail
Series DDR-120

Approvals and compliance

From the manufacturer's datasheet for this series

United States

  • UL

    UL Listing or Recognition means UL Solutions tested samples against the applicable UL safety standard and audits the factory that builds them. A UL file number is the usual evidence an inspector or specifier asks for in North America.

Eurasian Economic Union

  • EAC

    Conformity with the Eurasian Economic Union technical regulations, covering Russia, Belarus, Kazakhstan, Armenia and Kyrgyzstan. TP TC 004 is the low-voltage regulation and TP TC 020 the electromagnetic-compatibility one, so which number appears tells you what was assessed.

Isolation and electromagnetic compatibility
Withstand voltage I/P-O/P:4KVdc I/P-FG:2.5KVdc O/P-FG:2.5KVdc

Standards certified against

  • AS/NZS 62368.1
  • IEC 62368-1
  • UL 62368-1

Designed to reference

The datasheet lists these as design references. The series was built to them but has not been certified to them, so do not treat them as approvals.

UL508

Read the datasheet's exact wording

IEC 62368-1, UL 62368-1, EAC TP TC 004, AS/NZS 62368.1 approved; Design refer to UL508

Reproduced unedited from the manufacturer's datasheet. Where an approval covers only some models, the wording says so. Ask us for the certificate itself if your approval process needs it.

Certificates

Certificate copy supplied with this model.

  • CE · R50453592

    100%
    CE certificate R50453592

    CE · Certificate number R50453592

Ordering & shipping information

Order and delivery terms
Part number DDR-120B-12
Minimum order quantity 1
Country of origin China
Typical packed weight 696 g
Unit weight 510 g

Downloads

DDR-120 model comparison

View all models
ModelOutput voltageRated currentRated powerPriceAvailability
DDR-120A-2424 V4.2 A100.8 W$108.64
Ships in 3–5 business days
DDR-120D-1212 V10 A120 W$108.64
Ships in 3–5 business days
DDR-120B-12 12 V10 A120 W$108.64
Ships in 3–5 business days

DDR-120B-12: 12 V output; 4 other models: 24 V; 4 other models: 48 V.

DDR-120B-12: 10 A output current; the rest of the series runs 2.1 A to 8.3 A.

DDR-120B-12: 120 W rated power; DDR-120A-24 and DDR-120A-48: 101 W; DDR-120A-12: 99.6 W.

DDR-120B-12: 89% typical efficiency; the rest of the series runs 88.5% to 92%.

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Technical data source

Primary source
MEAN WELL
Datasheet revision
2026-03-31
Last verified

View the manufacturer datasheet How we source and verify product data

Specifications are transcribed from the manufacturer datasheet and are subject to change without notice. The current manufacturer datasheet governs in case of any discrepancy.