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Mean Well GST120A20-P1M Desktop AC Adapters 120W 20V 6A Level VI 2.5x5.5plug

Name: Mean Well GST120A20-P1M Desktop AC Adapters 120W 20V 6A Level VI 2.5x5.5plug
Brand: Mean Well
SKU: GST120A20-P1M
Price: 46.85 USD
Availability: InStock

Desktop AC Adapters 120W 20V 6A Level VI 2.5x5.5plug

SKU GST120A20-P1M

$46.85 USD

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Select model — 5 in this family

GST120A20-P1M

GST120A20-R7B 3 Pole Backorder$52.05 USD

GST120A20-P1M 3 Pole P1M Backorder$46.85 USD

GST160A20-R7B 3 Pole In stock$62.67 USD

GST220A20-R7B 3 Pole Low stock$86.13 USD

GST280A20-C6P 3 Pole Low stock$103.30 USD

Product variants

Available to order

Overview

GST120A20-P1M is the 20V output model of this series: rated current 6A, typical efficiency 90%.

GST120A is a highly reliable, 120W desktop style single-output green adaptor series. This product is a classⅠpower unit (with FG), equipped with a standard IEC320-C14 AC inlet and adopting the input range from 85VAC to 264VAC. The entire series supplies different models with output voltages ranging between 12VDC and 48VDC that can satisfy the demands for various types of consumer electronic devices. With the efficiency up to 91% and the extremely low no-load power consumption below 0.15W,GST120A is compliant with USA EISA 2007/DoE, Canada NRCan, Australia and New Zealand MEPS,Korea K-MEPS,Eu ErP and 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.GST120A is certified for the international safety regulations.

Features

Global certificates
Universal AC input / Full range
3 pole AC inlet IEC320-C14,ClassⅠpower unit
Built-in active PFC function
No load power consumption<0.15W
Energy efficiency Level VI
Comply with EISA 2007/DoE,NRCan,Korea K-MEPS,AU/NZ MEPS,EU ErP and CoC Version 5
Protections: Short circuit / Overload / Over voltage / Over temperature
Fully enclosed plastic case
-30~+70℃ wide range working temperature
LED indicator for power on
Various DC plug quick adaptor accessory available (Plug kit sold seperate, please refer to : https://www.meanwell.com/upload/pdf/DC_plug.pdf)
3 years warranty

Specifications

GST120A20-P1MSpecifications from the official datasheet (2025-03-28 edition)

OUTPUT

SAFETY MODEL NO.: GST120A20
DC VOLTAGE: 20V
RATED CURRENT: 6A
CURRENT RANGE: 0 ~ 6A
RATED POWER (max.): 120W
RIPPLE & NOISE (max.)^Note.2: 150mVp-p
VOLTAGE TOLERANCE^Note.3: ±5.0%
LINE REGULATION^Note.4: ±1.0%
LOAD REGULATION: ±4.0%
SETUP, RISE TIME^Note.5: 2000ms, 30ms / 230VAC 2500ms, 30ms / 115VAC at full load
HOLD UP TIME (Typ.): 20ms / 230VAC 20ms / 115VAC at full load

INPUT

VOLTAGE RANGE^Note.6: 85 ~ 264VAC 120 ~ 370VDC
FREQUENCY RANGE: 47 ~ 63Hz
POWER FACTOR (Typ.): PF>0.93 / 230VAC PF>0.97 / 115VAC at full load
EFFICIENCY (Typ.) R7B: 90%
EFFICIENCY (Typ.) P1M: 89%
AC CURRENT: 1.4A / 115VAC 0.7A / 230VAC
INRUSH CURRENT (max.): Cold start 35 / 115AC 70A / 230VAC
LEAKAGE CURRENT(max.): 0.75mA / 240VAC

PROTECTION

OVERLOAD: 105 ~ 160% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE: 105 ~ 135% rated output voltage Protection type : Shut down o/p voltage, re-power on to recover
OVER TEMPERATURE: 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% / ℃ (0~45℃)
VIBRATION: 10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes

SAFETY & EMC (Note. 9)

SAFETY STANDARDS^{Note. 7}: UL62368-1, CSA C22.2 No. 62368-1, TUV BS EN/EN62368-1, BSMI CNS15598-1, CCC GB4943.1, PSE J62368-1,AS/NZS 62368.1 , BIS IS13252, KC K60950-1, EAC TP TC 004 approved
WITHSTAND VOLTAGE: I/P-O/P: 3KVAC
ISOLATION RESISTANCE: I/P-O/P:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION: Parameter Standard Test Level

Conducted emission BS EN/EN55032(CISPR32),FCC PART 15 / CISPR22 CAN ICES-3(B)/NMB-3(B),CNS15936,GB17625.1 EAC TP TC 020,MSIP KN32 Class B
Radiated emission BS EN/EN55032(CISPR32),FCC PART 15 / CISPR22 CAN ICES-3(B)/NMB-3(B),CNS15936,GB17625.1 EAC TP TC 020,MSIP KN32 Class B
Harmonic current BS EN/EN61000-3-2,GB9254 Class A
Voltage flicker BS EN/EN61000-3-3
EMC IMMUNITY: BS EN/EN55035

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 2, 3V/m
EFT bursts BS EN/EN61000-4-4 Level 2, 1KV
Surge susceptibility BS EN/EN61000-4-5 Level 3, 1KV/Line-Line , 2KV/Line-FG
Conducted susceptibility BS EN/EN61000-4-6 Level 2, 3V
Magnetic field immunity BS EN/EN61000-4-8 Level 2, 3A/m
Voltage dips , interruption BS EN/EN61000-4-11 ＞95% dip 0.5 periods, 30% dip 25 periods, ＞95% interruptions 250 periods

Parameter	Standard	Test Level
Conducted emission	BS EN/EN55032(CISPR32),FCC PART 15 / CISPR22 CAN ICES-3(B)/NMB-3(B),CNS15936,GB17625.1 EAC TP TC 020,MSIP KN32	Class B
Radiated emission	BS EN/EN55032(CISPR32),FCC PART 15 / CISPR22 CAN ICES-3(B)/NMB-3(B),CNS15936,GB17625.1 EAC TP TC 020,MSIP KN32	Class B
Harmonic current	BS EN/EN61000-3-2,GB9254	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 2, 3V/m
EFT bursts	BS EN/EN61000-4-4	Level 2, 1KV
Surge susceptibility	BS EN/EN61000-4-5	Level 3, 1KV/Line-Line , 2KV/Line-FG
Conducted susceptibility	BS EN/EN61000-4-6	Level 2, 3V
Magnetic field immunity	BS EN/EN61000-4-8	Level 2, 3A/m
Voltage dips , interruption	BS EN/EN61000-4-11	＞95% dip 0.5 periods, 30% dip 25 periods, ＞95% interruptions 250 periods

OTHERS

MTBF: 2250.5K hrs min. Telcordia SR-332 (Bellcore) ; 368.5K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 167*67*35mm (L*W*H)
PACKING: 0.575Kg; 20pcs/12.5Kg/0.89CUFT

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 notes8

1. All parameters are specified at 230VAC input, rated load, 25℃ 70% RH ambient.
2. Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1μF & 47μF capacitor.
3. Tolerance: includes set up tolerance, line regulation, load regulation.
4. Line regulation is measured from low line to high line at rated load.
5. 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.
6. Derating may be needed under low input voltage. Please check the derating curve for more details.
7. 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).
8. 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

GST120A20-P1M Derating Curve — Derating Curve

GST120A20-P1M Mechanical Specification — Mechanical Specification

GST120A20-P1M DC output plug — DC output plug

GST120A20-P1M Example quick adapter accessory — Example quick adapter accessory

GST120A20-P1M Center Pin Style — Center Pin Style

GST120A20-P1M Pin Assignment — Pin Assignment

Typical applications

Consumer electronic devices
Telecommunication devices
Office facilities
Industrial equipments

Downloads

Certificates9

UL Certificate (GST120A)(EN) PDF Download

TUV Certificate (GST120A)(EN) PDF Download

EMC Certificate (GST120A)(EN) PDF Download

NRCan Certificate (GST120A)(EN) PDF Download

BSMI Certificate (GST120A)(EN) PDF Download

PSE Certificate (GST120A)(EN) PDF Download

CCC Certificate (GST120A)(CN) PDF Download

FCC Certificate (GST120A)(EN) PDF Download

ErP Certificate (GST120A)(EN) PDF Download

Test reports1

Test Report (GST120A20)(EN) PDF Download

Catalogues2

Mean Well Adaptor Catalog PDF Download

Mean Well Catalog (Industrial) PDF Download

FAQ

What are the main electrical ratings of the Mean Well GST120A20-P1M?

This AC-DC industrial adaptor is rated for 120W total output. It provides 20V DC at up to 6A, which makes it suitable for equipment that requires that exact output voltage and current capacity.

What input voltage range does the GST120A20-P1M support?

The GST120A20-P1M accepts a universal AC input range of 85 to 264VAC, and it also lists a 120 to 370VDC input range. That gives it flexibility for use across many standard power systems.

What kinds of equipment is this 20V desktop power adapter typically used for?

This model is generally suited to commercial or industrial devices that require a regulated 20V DC supply at up to 6A. Buyers commonly consider this type of external adaptor for electronics that need a higher-power enclosed supply rather than an open-frame power supply.

Is the GST120A20-P1M an energy-efficient power supply?

The datasheet lists a typical efficiency of 89% for the P1M version at 230VAC and rated load. Power factor is typically above 0.93 at 230VAC and above 0.97 at 115VAC at full load.

What protection features are built into this adapter?

The GST120A20-P1M includes overload, over voltage, and over temperature protection. Its overload protection is specified as hiccup mode with auto-recovery, while over voltage and over temperature shut down the output until the unit is re-powered.

Can this power adapter be used in demanding temperature conditions?

The specification lists a working temperature range of -30 to +70°C, with output derating at higher ambient temperatures per the derating curve. The -40 to +85°C figure is the storage temperature range, not the operating range.

What should I check for connector compatibility before ordering?

You should confirm that your device matches the output rating and the exact connector version supplied for this model. The provided product information includes both the model title and a detailed connector specification, so connector compatibility should be verified before purchase.

What certifications and warranty does the GST120A20-P1M have?

This model lists safety approvals including UL62368-1, CSA C22.2 No. 62368-1, TUV BS EN/EN62368-1, BSMI CNS15598-1, CCC GB4943.1, PSE J62368-1 and AS/NZS 62368.1. It also lists EMC compliance to standards such as EN55032 Class B and FCC Part 15.

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