Best Price Mean Well GSM40A12-P1J Power Supply - 40W 12V, High Efficiency

Name: Mean Well GSM40A12-P1J Power Supply 40W 12V 3.34A
Brand: Mean Well
SKU: GSM40A12-P1J
Price: 25.7 USD
Availability: InStock

Overview

GSM40A12-P1J is the 12V output model of this series: rated current 3.34A, typical efficiency 88%.

GSM40A is a highly reliable, 40W single-output green medical adaptor series. This product is a class I power unit(with FG), equipped with a standard IEC320-C14 AC inlet and adopting the input range from 80VAC to 264VAC. The entire series supplies different models with output voltages between 5VDC and 48VDC that can satisfy the demands for various types of medical electrical devices. The circuitry design meets the international medical standards (2*MOPP), having an ultra low leakage current (<100μA), fitting the medical devices in direct electrical contact with the patients. With the efficiency up to 91% and the extremely low no-load power consumption below 0.15W, GSM40A is compliant with USA EISA 2007/DoE ,Canada NRCan,Australia and New Zealand MEPS, EU ErP,and meet Code of Conduct (CoC) Version 5.The supreme feature allows the adaptor to save the energy when it is either under the operating mode or the standby mode. The entire series utilizes the 94V-0 flame retardant plastic case.GSM40A is certified for the international medical safety regulations.

Features

3 pole AC inlet IEC320-C14, ClassⅠpower unit
Medical safety approved (2 x MOPP) according to ANSI/AAMI ES60601-1 and IEC/BS EN/EN60601-1
Extremely low leakage current
No load power consumption<0.15W
Energy efficiency level VI and meet CoC Version 5 (Except 5~9V for Level V)
-30~+70℃ wide range working temperature
Protections: Short circuit / Overload / Over voltage
LED indicator for power on
Lifetime > 90 K hours
Various DC plug quick adapter accessory available (Plug kit sold sperately,please refer to : https://www.meanwell.com/upload/pdf/DC_plug.pdf)
3 years warranty

Specifications

GSM40A12-P1JSpecifications from the official datasheet (2026-05-09 edition)

OUTPUT

SAFETY MODEL NO.: GSM40A12
DC VOLTAGE^Note.2: 12V
RATED CURRENT: 3.34A
CURRENT RANGE: 0.1 ~ 3.34A
RATED POWER (max.): 40W
RIPPLE & NOISE (max.)^Note.3: 100mVp-p
VOLTAGE TOLERANCE^Note.4: ±3.0%
LINE REGULATION^Note.5: ±1.0%
LOAD REGULATION: ±3.0%
SETUP, RISE TIME^Note.6: 1000ms, 30ms / 230VAC 1500ms, 30ms / 115VAC at full load
HOLD UP TIME (Typ.): 50ms / 230VAC 24ms / 115VAC at full load

INPUT

VOLTAGE RANGE^Note.7: 80 ~ 264VAC
FREQUENCY RANGE: 47 ~ 63Hz
EFFICIENCY (Typ.): 88%
AC CURRENT (Typ.): 1A / 115VAC 0.5A / 230VAC
INRUSH CURRENT (Typ.): Cold start 30A/115VAC 60A / 230VAC
LEAKAGE CURRENT(max.): Earth leakage current < 100μA/264VAC , Touch current < 100μA/264VAC

PROTECTION

OVERLOAD: 105 ~ 160% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE: 12.6 ~ 16.2V Protection type : Shut down o/p voltage, re-power on to recover

ENVIRONMENT

WORKING TEMP.: -30 ~ +70℃ (Refer to "Derating Curve")
WORKING HUMIDITY: 20% ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY: -40 ~ +85℃, 10 ~ 95% RH non-condensing
TEMP. COEFFICIENT: ±0.03% / ℃ (0~50℃ )
VIBRATION: 10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes
OPERATING ALTITUDE^Note.8: 3000 meters

SAFETY & EMC (Note 9)

SAFETY STANDARDS: IEC 60601-1:2005+A1+A2, TUV BS EN/ EN 60601-1:2006+A1+A12+A2, ANSI/AAMI ES60601-1:2005+A2,CAN/CSA C22.2 No. 60601-1:2014+A2, EAC TP TC 004 approved
ISOLATION LEVEL: Primary-Secondary: 2xMOPP, Primary-Earth:1xMOPP
WITHSTAND VOLTAGE: I/P-O/P:4KVAC I/P-FG:2KVAC O/P-FG:SHORT
ISOLATION RESISTANCE: I/P-O/P, I/P-FG:100M Ohms / 500VDC / 25℃ / 70% RH
EMC EMISSION: Parameter Standard Test Level

Conducted emission BS EN/EN55011 (CISPR11), FCC PART 15 / CISPR22 Class B
Radiated emission BS EN/EN55011 (CISPR11), FCC PART 15 / CISPR22 Class B
Harmonic current BS EN/EN61000-3-2 Class A
Voltage flicker BS EN/EN61000-3-3
EMC IMMUNITY: BS EN/EN60601-1-2, BS EN/EN61204-3

Parameter Standard Test Level

ESD BS EN/EN61000-4-2 Level 4, 15KV air; Level 4, 8KV contact
RF field susceptibility BS EN/EN61000-4-3 Level 3, 10V/m( 80MHz~2.7GHz ) Table 9, 9~28V/m( 385MHz~5.78GHz )
EFT bursts BS EN/EN61000-4-4 Level 3, 2KV
Surge susceptibility BS EN/EN61000-4-5 Level 3, 1KV/Line-Line , 2KV/Line-FG
Conducted susceptibility BS EN/EN61000-4-6 Level 3, 10V
Magnetic field immunity BS EN/EN61000-4-8 Level 4, 30A/m
Voltage dip, interruption BS EN/EN61000-4-11 100% dip 1 periods, 30% dip 25 periods, 100% interruptions 250 periods

Parameter	Standard	Test Level
Conducted emission	BS EN/EN55011 (CISPR11), FCC PART 15 / CISPR22	Class B
Radiated emission	BS EN/EN55011 (CISPR11), FCC PART 15 / CISPR22	Class B
Harmonic current	BS EN/EN61000-3-2	Class A
Voltage flicker	BS EN/EN61000-3-3

Parameter	Standard	Test Level
ESD	BS EN/EN61000-4-2	Level 4, 15KV air; Level 4, 8KV contact
RF field susceptibility	BS EN/EN61000-4-3	Level 3, 10V/m( 80MHz~2.7GHz ) Table 9, 9~28V/m( 385MHz~5.78GHz )
EFT bursts	BS EN/EN61000-4-4	Level 3, 2KV
Surge susceptibility	BS EN/EN61000-4-5	Level 3, 1KV/Line-Line , 2KV/Line-FG
Conducted susceptibility	BS EN/EN61000-4-6	Level 3, 10V
Magnetic field immunity	BS EN/EN61000-4-8	Level 4, 30A/m
Voltage dip, interruption	BS EN/EN61000-4-11	100% dip 1 periods, 30% dip 25 periods, 100% interruptions 250 periods

OTHERS

MTBF: 3613.2K hrs min. Telcordia SR-332 (Bellcore) ; 740.7K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 125*50*31.5mm (L*W*H)
PACKING: 0.25Kg; 40pcs/ 12Kg/1.04CUFT

CONNECTOR

PLUG: See page 4~5 ; Other type available by customer requested
CABLE: See page 4~5 ; Other type available by customer requested

Test conditions and notes9

1. All parameters are specified at 230VAC input, rated load, 25℃ 70% RH ambient.
2. DC voltage: The output voltage set at point measure by plug terminal & 50% load.
3. Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1μF & 47μF capacitor.
4. Tolerance: includes set up tolerance, line regulation, load regulation.
5. Line regulation is measured from low line to high line at rated load.
6. Length of set up time is measured at first cold start. Turning ON/OFF the power supply may lead to increase of the set up time.
7. Derating may be needed under low input voltages. Pleas check the derating curve for more details.
8. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).
9. The power supply is considered as an independent unit, but the final equipment still need to re-confirm that the whole system complies with the EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.” (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )

Technical drawings

GSM40A12-P1J Derating Curve — Derating Curve

GSM40A12-P1J Mechanical Specification — Mechanical Specification

GSM40A12-P1J DC output plug — DC output plug

Typical applications

Mobile clinical workstation
Oral irrigator
Portable hemodialysis machine
Breath Machine
Medical computer monitor

Downloads

Datasheet1

GSM40A12-P1J datasheetGSM40A-SPEC.PDF · 2026-05-09 edition PDF Download

Certificates7

EMC Certificate (ELG-75)(EN) PDF Download

CB Certificate(GSM40A)(EN) PDF Download

TUV Certificate(GSM40A)(EN) PDF Download

EMC Certificate(GSM40A)(EN) PDF Download

FCC Certificate(GSM40A)(EN) PDF Download

NRCan Certificate(GSM40A)(EN) PDF Download

UL Certificate(GSM40A)(EN) PDF Download

Catalogues3

Mean Well Medical Catalog PDF Download

Mean Well Adaptor Catalog PDF Download

Mean Well Catalog (Industrial) PDF Download

FAQ

What output does the Mean Well GSM40A12-P1J provide?

The GSM40A12-P1J is a 40W AC-DC medical adaptor with a regulated 12V DC output. It is rated for up to 3.34A output current. This makes it suitable for equipment that requires a 12V supply within that power range.

Is the GSM40A12-P1J approved for medical applications?

Yes. This model is medical safety approved and specified as providing 2 x MOPP isolation between primary and secondary. It also lists compliance with medical safety standards including IEC 60601-1, ANSI/AAMI ES60601-1 and EN 60601-1.

What AC input range does this power supply support?

The GSM40A12-P1J has a universal input range of 80 to 264VAC at 47 to 63Hz. That wide range helps it fit international mains environments. It uses an IEC320-C14 AC inlet.

What DC plug type comes standard on the GSM40A12-P1J?

The standard output plug for this model is the P1J type. It is specified as 2.1 mm inner diameter by 5.5 mm outer diameter by 11 mm length, center positive, tuning fork type. Buyers should match that plug format to their device requirements.

What protection features are included in this model?

This power supply includes overload and over voltage protection. The overload protection is specified at 105% to 160% of rated output power and uses hiccup mode with auto-recovery, while over voltage protection (12.6 to 16.2V) shuts down the output until the unit is re-powered.

What operating environment is the GSM40A12-P1J designed for?

The specified working temperature range is -30°C to +70°C, with reference to the output derating curve. Working humidity is 20% to 90% RH non-condensing, and the unit includes a power LED indicator. It is rated for operating altitudes up to 3000 meters.

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Mean Well GSM40A12-P1J Power Supply 40W 12V 3.34A

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Overview

Features

Specifications

OUTPUT

INPUT

PROTECTION

ENVIRONMENT

SAFETY & EMC (Note 9)

OTHERS

CONNECTOR

Technical drawings

Typical applications

Downloads

Datasheet1

Certificates7

Catalogues3

FAQ

Payment & Security

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Mean Well GSM40A12-P1J Power Supply 40W 12V 3.34A

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