Mean Well GST18B12-P1J Power Supply | 18W 12V Adapter

Name: Mean Well GST18B12-P1J Power Supply 18W 12V 1.5A
Brand: Mean Well
SKU: GST18B12-P1J
Price: 18.05 USD
Availability: InStock

Overview

GST18B12-P1J is the 12V output model of this series: rated current 1.50A, typical efficiency 86%. Type P1J: Standard model,2.1 φx5.5 φx11mm,C+,tuning fork type.

GST18B is a highly reliable, 18W desktop style single-output green adaptor series. This product is a classⅡ power unit (no FG), equipped with a standard IEC320-C8 AC inlet and adopting the input range from 85VAC to 264VAC. The entire series supplies different models with output voltages ranging between 5VDC and 48VDC that can satisfy the demands for various types of consumer electronic devices. With the efficiency up to 89% and the extremely low no-load power consumption below 0.075W,GST18B 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, providing the double insulation that effectively prevents electrical shock. GST18B is certified for the international safety regulations.

Features

Global certificates
Universal AC input / Full range
2 pole AC inlet IEC320-C8,Class Ⅱ power unit
No load power consumption< 0.075W
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
Fully enclosed plastic case
Pass LPS
-30~+70℃ wide range working temperature
LED indicator for power on
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

GST18B12-P1JSpecifications from the official datasheet (2026-04-03 edition)

OUTPUT

SAFETY MODEL NO.: GST18B12
DC VOLTAGE^Note.2: 12V
RATED CURRENT: 1.50A
CURRENT RANGE: 0 ~ 1.50A
RATED POWER (max.): 18W
RIPPLE & NOISE (max.)^Note.3: 80mVp-p
VOLTAGE TOLERANCE^Note.4: ±3.0%
LINE REGULATION^Note.5: ±1.0%
LOAD REGULATION^Note.6: ±3.0%
SETUP, RISE, HOLD UP TIME: 1000ms, 30ms, 50ms/230VAC 1500ms, 30ms, 15ms/115VAC at full load

INPUT

VOLTAGE RANGE^Note.7: 85 ~ 264VAC
FREQUENCY RANGE: 47 ~ 63Hz
EFFICIENCY (Typ.): 86%
AC CURRENT: 0.5A / 115VAC 0.3A / 230VAC
INRUSH CURRENT (max.): Cold start 35A / 115VAC 65A / 230VAC
LEAKAGE CURRENT(max.): 0.25mA / 240VAC

PROTECTION

OVERLOAD: 110 ~ 150% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE: 110 ~ 140% rated output voltage Protection type : Clamp by zener diode, output short

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

SAFETY & EMC

SAFETY STANDARDS^{Note. 8}: UL62368-1, CSA C22.2 No.62368-1, TUV BS EN/EN62368-1, BSMI CNS15598-1, CCC GB4943.1,AS/NZS 62368.1,PSE J62368-1, BIS IS13252, KC K60950-1, EAC TP TC 004 approved
WITHSTAND VOLTAGE: I/P-O/P:4242VDC
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 3, 8KV air; Level 2, 4KV 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
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 3, 8KV air; Level 2, 4KV 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
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: 3879.7K hrs min. Telcordia SR-332 (Bellcore) ; 668.4K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 79*54*33mm (L*W*H)
PACKING: 191.5g; 60pcs/12.5Kg/1.15CUFT

CONNECTOR

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

MODEL ENCODING

P1J (this model): Standard model,2.1 φx5.5 φx11mm,C+,tuning fork type
Blank: Other options available by customer requested (see Page 4~5)

Test conditions and notes8

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.Load regulation is measured from 10% to 100% rated load.
7.Derating may be needed under low input voltage. Please check the derating curve for more details.
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

GST18B12-P1J Derating Curve — Derating Curve

GST18B12-P1J Mechanical Specification — Mechanical Specification

GST18B12-P1J DC output plug — DC output plug

GST18B12-P1J G S T 1 8 B series — G S T 1 8 B series

Typical applications

Consumer electronic devices
Telecommunication devices
Office facilities
Industrial equipments

Downloads

Datasheet1

GST18B12-P1J datasheetGST18B-SPEC.PDF · 2026-04-03 edition PDF Download

Certificates9

TUV Certificate (GST18B)(EN) PDF Download

BSMI Certificate (GST18B)(EN) PDF Download

CB Certificate(GST18B)(EN) PDF Download

CE Certificate (GST18B)(EN) PDF Download

UL Certificate (GST18B)(EN) PDF Download

EMC Certificate ((GST18B)(EN) PDF Download

NRCAN Certificate (GST18B)(EN) PDF Download

FCC Certificate (GST18B)(EN) PDF Download

RCM Certificate (GST18B)(EN) PDF Download

Test reports1

Test Report(GST18B12) PDF Download

Catalogues2

Mean Well Adaptor Catalog PDF Download

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the GST18B12-P1J for a 12V PLC accessory or small automation controller?

Yes, if the equipment requires 12V constant voltage and draws no more than 1.5A or 18W. That output makes it suitable for compact automation electronics rather than larger 12V loads. The 85-264VAC input range also helps in sites with different AC supply standards.

Is this 12V power supply suitable for CCTV, access control, or monitoring electronics?

It can be used for 12V electronics in monitoring or control systems when the total load remains within 1.5A and 18W. The constant-voltage output is appropriate for devices that expect a regulated 12V rail. Buyers should verify the device does not require more than 18W.

Can the GST18B12-P1J power a small 12V HMI, modem, or industrial communications device?

Yes, it is a fit for small 12V communication or interface equipment that stays within 1.5A and 18W. This model is intended for fixed-voltage 12V loads, not for devices that need another DC level. Its compact 79.0 × 54.0 × 33.0 mm form factor works well where panel space is limited.

Would this model work for 12V embedded electronics in kiosks or automation cabinets?

It can, as long as the electronics are specified for 12V DC and the combined demand does not exceed 1.5A or 18W. The unit provides constant-voltage output, which is what most fixed-input embedded electronics expect. Its 191.5 g weight also supports compact equipment designs.

Is the GST18B12-P1J appropriate for outdoor installations?

The operating temperature range is -30°C to +70°C, with load derating required at the upper end of that range (see the derating curve). But the provided specifications do not include an IP rating, so exposure to rain, washdown, or dust-heavy outdoor conditions should not be assumed acceptable. It is better suited to indoor use or a protected enclosure.

Payment & Security

Payment methods

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Please log in to write a review.

{ "id":8655910240576, "variants" :[{ "context":"default", "variant_id": 46625186513216, "sku":"GST18B12-P1J", "inventory_qty" : 9, "customer" :true, "custom_html" :"\u003cdiv class=\"price\"\u003e\n \u003cdiv class=\"price__default\"\u003e\n \u003cstrong class=\"price__current\"\u003e$18.05\u003c\/strong\u003e\n \u003cs class=\"price__was\"\u003e\u003c\/s\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"unit-price relative\" hidden\u003e\u003cspan class=\"visually-hidden\"\u003eUnit price\u003c\/span\u003e\u003cspan class=\"unit-price__price\"\u003e\u003c\/span\u003e\u003cspan class=\"unit-price__separator\"\u003e \/ \u003c\/span\u003e\u003cspan class=\"unit-price__unit\"\u003e\u003c\/span\u003e\u003c\/div\u003e\n\n \u003cdiv class=\"price__no-variant\" hidden\u003e\n \u003cstrong class=\"price__current\"\u003eUnavailable\u003c\/strong\u003e\n \u003c\/div\u003e\n\n \u003c\/div\u003e", "volume_html" :"\u003cvolume-pricing class=\"parent-display inside_product_form\" id=\"volume-pricing-main\" \u003e\u003c\/volume-pricing\u003e" } ] }

Mean Well GST18B12-P1J Power Supply 18W 12V 1.5A

Select model — 14 in this family

Overview

Features

Specifications

OUTPUT

INPUT

PROTECTION

ENVIRONMENT

SAFETY & EMC

OTHERS

CONNECTOR

MODEL ENCODING

Technical drawings

Typical applications

Downloads

Datasheet1

Certificates9

Test reports1

Catalogues2

FAQ

Payment & Security

Write a review

Your cart

Mean Well GST18B12-P1J Power Supply 18W 12V 1.5A

Features

Typical applications

Company Information

Services and Support

Choose options