MEAN WELL GSM40B12 40W 12V 3.34A Adaptor

Part numberGSM40B12-P1J Model: GSM40B12
Output voltage 12 V
Rated current 3.34 A
Rated power 40 W
$33.79Excluding 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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GSM40B model selection table Desktop (Level VI) — Medical
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Key specifications

Complete technical specifications
Output
Output voltage 12 V
Rated current 3.34 A
Rated power 40 W
AC input range 80–264 VAC
Typical efficiency 88 %
Mechanical
Operating temperature -30 to 70 °C

Is this model right for you?

The GSM40B12 lists 80 ~ 264VAC input, the same as the other models in the GSM40B series. They are distinguished by details this page does not carry; the datasheet lists them in full.

Product overview

The GSM40B12 is a MEAN WELL AC/DC Adaptor in the Desktop (Level VI) — Medical family, part of the GSM40B series. It accepts an input voltage range of 80 ~ 264VAC at a frequency range of 47 ~ 63Hz. The product has a net weight of 270 g. Vibration specification: 10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes.

Where this model fits

The GSM40B12 is used in Security & Surveillance applications. Its input voltage range is 80 ~ 264VAC at 47 ~ 63Hz, and its net weight is 270 g.

Complete technical specifications

Rev. 2026-05-09
Output
Output voltage 12 V
Rated current 3.34 A
Rated power 40 W
Input
AC input range 80–264 VAC
Frequency range 47–63 Hz
Typical efficiency 88 %
Environmental
Operating temperature -30 to 70 °C
Storage temperature -40 to 85 °C
Vibration 10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes
Mechanical
Net weight 270.0 g
Safety & compliance
Safety standards IEC 60601-1:2005+A1+A2; IEC 60601-1-11:2015+A1, TUV BS EN/ EN 60601-1:2006+A1+A12+A2; BS EN/ EN 60601-1-11:2015+A1 ANSI/AAMI ES60601-1:2005+A2; ANSI/AAMI HA60601-1-11+A1, CAN/CSA C22.2 No. 60601-1:2014+A2; CSA C22.2 NO. 60601-1-11:2015+A1, PSE J60950-1(48V only); EAC TP TC 004; KC K60950-1(48V only) approved

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 GSM40B12
Brand MEAN WELL
Category AC/DC Adaptor
Series GSM40B

Approvals and compliance

From the manufacturer's datasheet for this series

Canada

  • CSA

    Certification to a CSA C22.2 standard, the Canadian counterpart of the UL series. Datasheets cite the specific C22.2 number, which is how you tell a power-supply certificate from a luminaire-controlgear one.

Europe

  • TÜV

    A TÜV certificate is third-party testing against the European EN standard. It is the evidence behind a CE declaration rather than a replacement for it: CE remains the manufacturer's own declaration, and the TÜV report is what makes that declaration defensible.

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.

South Korea

  • KC

    Korea Certification, mandatory for electrical equipment in scope. The KC number mirrors the IEC standard it is based on, so KC 62368-1 is assessment against the Korean adoption of IEC 62368-1.

Japan

  • PSE

    Conformity with Japan's Electrical Appliance and Material Safety Act. Japanese datasheets cite a J-prefixed standard such as J62368-1, which is the Japanese deviation-adjusted version of the IEC text.

Isolation and electromagnetic compatibility
Withstand voltage I/P-O/P:4KVAC

Standards certified against

  • ANSI/AAMI ES60601-1
  • EN 60601-1
  • EN 60601-1-11
  • IEC 60601-1
  • IEC 60601-1-11
  • J60950-1
  • K60950-1
Read the datasheet's exact wording

IEC 60601-1:2005+A1+A2; IEC 60601-1-11:2015+A1, TUV BS EN/ EN 60601-1:2006+A1+A12+A2; BS EN/ EN 60601-1-11:2015+A1 ANSI/AAMI ES60601-1:2005+A2; ANSI/AAMI HA60601-1-11+A1, CAN/CSA C22.2 No. 60601-1:2014+A2; CSA C22.2 NO. 60601-1-11:2015+A1, PSE J60950-1(48V only); EAC TP TC 004; KC K60950-1(48V only) approved

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 GSM40B12
SKU GSM40B12-P1J
Minimum order quantity 1
Country of origin China
Typical packed weight 445 g
Unit weight 270 g

Downloads

GSM40B model comparison

View all models
ModelOutput voltageRated currentRated powerPriceAvailability
GSM40B1818 V2.22 A40 W$33.79
Ships in 3–5 business days
GSM40B12 12 V3.34 A40 W$33.79
Ships in 3–5 business days
GSM40B4848 V0.84 A40 W$33.79
Ships in 3–5 business days

GSM40B12: 12 V output; the rest of the series runs 5 V to 48 V.

GSM40B12: 3.34 A output current; the rest of the series runs 0.84 A to 5.34 A.

GSM40B12: 40 W rated power; GSM40B05 and GSM40B05-P1J: 25 W.

GSM40B12: 88% typical efficiency; the rest of the series runs 81% to 91%.

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Technical data source

Primary source
MEAN WELL
Datasheet revision
2026-05-09
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.