MEAN WELL GST18U Series

18W AC-DC Reliable Green Industrial Adaptor

Description

The GST18U series is a highly reliable, 18W wall-mounted style single-output green power adapter. It is a Class II power unit (no FG), equipped with a 2-Pin standard USA AC power plug and accepts an input range from 85VAC to 264VAC. The series offers various models with output voltages ranging between 5VDC and 48VDC, suitable for diverse electronic devices. Key features include high efficiency up to 89%, extremely low no-load power consumption below 0.075W, compliance with USA EISA 2007/DoE and Canada NRCan standards, and a 94V-0 flame retardant plastic case for double insulation and electrical shock prevention. The GST18U series is certified for international safety regulations.

Features

Global certificates
Universal AC input / Full range
2 pole USA plug, Class II power unit
No load power consumption < 0.075W
Energy efficiency Level VI
Comply with EISA 2007/DoE and NRCan
Protections: Short circuit / Overload / Over voltage
Fully enclosed plastic case
Pass LPS (Limited Power Source)
-30~+70°C wide range working temperature
LED indicator for power on
Various DC plug quick adapter accessories available (Plug kit sold separately, please refer to: https://www.meanwell.com/upload/pdf/DC_plug.pdf)
3 years warranty

Applications

Consumer electronic devices
Telecommunication devices
Office facilities
Industrial equipments

Model Encoding

The model encoding follows a structure like GST 18 U 05-P1J, where:

GST18U: Series name
18: Rated wattage (18W)
U: USA 2 pin AC plug
05: Output voltage (e.g., 05 for 5VDC)
P1J: DC plug type (Standard model: 2.1x5.5x11mm, C+, tuning fork type). Other options are available by customer request (see pages 4-5).

Specifications

General Specifications

ORDER NO.	GST18U05	GST18U07	GST18U09	GST18U12	GST18U15	GST18U18	GST18U24	GST18U28	GST18U48
SAFETY MODEL NO.	GST18U05-P1J	GST18U07-P1J	GST18U09-P1J	GST18U12-P1J	GST18U15-P1J	GST18U18-P1J	GST18U24-P1J	GST18U28-P1J	GST18U48-P1J
DC VOLTAGE (Note.2)	5V	7.5V	9V	12V	15V	18V	24V	28V	48V
RATED CURRENT	3.0A	2.0A	2.0A	1.50A	1.20A	1.0A	0.75A	0.64A	0.375A
CURRENT RANGE	0~3.0A	0~2.0A	0~2.0A	0~1.50A	0~1.20A	0~1.0A	0~0.75A	0~0.64A	0~0.375A
RATED POWER (max.)	15W	15W	18W	18W	18W	18W	18W	18W	18W
OUTPUT RIPPLE & NOISE (max.) (Note.3)	80mVp-p	80mVp-p	80mVp-p	80mVp-p	100mVp-p	150mVp-p	150mVp-p	150mVp-p	150mVp-p
VOLTAGE TOLERANCE (Note.4)	±5.0%	±5.0%	±5.0%	±3.0%	±3.0%	±3.0%	±2.0%	±2.0%	±2.0%
LINE REGULATION (Note.5)	±1.0%	±1.0%	±1.0%	±1.0%	±1.0%	±1.0%	±1.0%	±1.0%	±1.0%
LOAD REGULATION (Note.6)	±5.0%	±5.0%	±5.0%	±3.0%	±3.0%	±3.0%	±2.0%	±2.0%	±2.0%
SETUP, RISE, HOLD UP TIME	1000ms, 30ms, 50ms/230VAC; 1500ms, 30ms, 15ms/115VAC at full load
VOLTAGE RANGE (Note.7)	85~264VAC
FREQUENCY RANGE	47~63Hz
EFFICIENCY (Typ.)	81%	85%	85%	86%	87%	88%	88%	88.5%	89%
INPUT AC CURRENT	0.5A/115VAC ; 0.3A/230VAC
INRUSH CURRENT (max.)	Cold start 35A/115VAC ; 65A/230VAC
LEAKAGE CURRENT(max.)	0.25mA / 240VAC

Protections

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.

Environmental Specifications

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

Safety & EMC

Parameter	Standard	Test Level / Note
WITHSTAND VOLTAGE	UL62368-1, CSA C22.2 No.62368-1, BSMI CNS14336-1, EAC TP TC 004 approved
ISOLATION RESISTANCE	I/P-O/P:4242VDC
EMC EMISSION (Note. 8)	Conducted emission	FCC PART 15/CISPR22, CAN ICES-3(B)/NMB-3(B), CNS13438, EAC TP TC 020	Class B
	Radiated emission	FCC PART 15/CISPR22, CAN ICES-3(B)/NMB-3(B), CNS13438, EAC TP TC 020	Class B

Reliability

MTBF: 3879.7K hrs min. Telcordia SR-332 (Bellcore) ; 668.4K hrs min. MIL-HDBK-217F (25°C)

Others

DIMENSION: 79*54*33mm (L*W*H)
PACKING: 198g; 60pcs/12.9Kg/1.15CUFT
PLUG: See page 4~5; Other type available by customer requested
CONNECTOR: See page 4~5; Other type available by customer requested
CABLE: See page 4~5; Other type available by customer requested

NOTE:

All parameters are specified at 115VAC input, rated load, 25°C 70% RH ambient.
DC voltage: The output voltage is set at the point measured by the plug terminal & 50% load.
Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1µF & 47µF capacitor.
Tolerance: includes set up tolerance, line regulation, load regulation.
Line regulation is measured from low line to high line at rated load.
Load regulation is measured from 10% to 100% rated load.
Derating may be needed under low input voltage. Please check the derating curve for more details.
The power supply is considered as an independent unit, but the final equipment still needs 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)
Product Liability Disclaimer: For detailed information, please refer to https://www.meanwell.com/serviceDisclaimer.aspx

Mechanical Specifications

Derating Curve

The Derating Curve illustrates the relationship between Load (%) and Ambient Temperature (°C). It shows that 100% load is supported from -30°C up to approximately 40°C, after which the load capacity derates linearly to 50% at 70°C.

Static Characteristics

The Static Characteristics graph displays Load (%) against Input Voltage (VAC) at 60Hz. The adapter maintains 100% load capacity across the entire input voltage range of 85VAC to 264VAC.

Dimensions

The unit measures 79mm (Length) x 54mm (Width) x 33mm (Height). It is equipped with a 2-pole USA plug. The output cable length is specified as 1200±50mm for 5V to 12V models using UL1185 16AWG wire, and 1800±50mm for 15V to 48V models using UL1185 18AWG wire. The DC output connector is positioned approximately 70±10mm from the unit.

Name Plate

A name plate is affixed to the unit, providing essential product information.

DC Output Plug Options

Standard Plug: P1J

The standard DC output plug is the P1J type, featuring dimensions of 5.5mm Outer Diameter (OD), 2.1mm Inner Diameter (ID), and 11±0.5mm length. The pin assignment is Center Positive (C+).

DC Plug Changeability

DC plugs can be changed through:

Customization of the standard part with an optional DC plug according to the table (MOQ applicable).
Quick adapter accessories (sold separately without MOQ).

Please refer to the table below and the online selection guide: https://www.meanwell.com/upload/pdf/DC_plug.pdf

Optional DC Plugs

Optional DC plugs are available in customized cables or as quick adapters.

Tuning Fork Style

Type No.	A (OD)	B (ID)	C (L)	Quick Adapter Accessory
P1I	5.5	2.1	9.5	Available (Current rating: 7.5A max.)
P1L	5.5	2.5	9.5
P1M	5.5	2.5	11.0
P1IR	5.5	2.1	9.5
P1JR	5.5	2.1	11.0
P1LR	5.5	2.5	9.5
P1MR	5.5	2.5	11.0

Barrel Style

Type No.	A (OD)	B (ID)	C (L)	Quick Adapter Accessory
P2I	5.5	2.1	9.5	None
P2J	5.5	2.1	11.0
P2L	5.5	2.5	9.5
P2M	5.5	2.5	11.0
P2IR	5.5	2.1	9.5
P2JR	5.5	2.1	11.0
P2LR	5.5	2.5	9.5
P2MR	5.5	2.5	11.0

Lock Style

Type No.	A (OD)	B (ID)	C (L)	Quick Adapter Accessory
P2S(S761K)	5.53	2.03	12.06	None
P2K(761K)	5.53	2.54	12.06
P2C(S760K)	5.53	2.03	9.52
P2D(760K)	5.53	2.54	9.52

Min. Pin Style

Type No.	A	B	C	Quick Adapter Accessory
P3A	2.35	0.7	11.0	Available (Current rating: 5A max.)
P3B	4.0	1.7	11.0
P3C	4.75	1.7	11.0

Center Pin Style

Type No.	A (OD)	B (ID)	C (L)	D (Center Pin)	Quick Adapter Accessory
P4A	5.5	3.4	11.0	1.0	Available (Current rating: 7.5A max.)
P4B	6.5	4.4	11.0	1.4
P4C	7.4	5.1	11.0	0.6

Min. DIN 3 Pin with Lock (male)

Type No.	PIN No.	Output	Quick Adapter Accessory
R6B	1	+Vo	Available (Current rating: 7.5A max.)
	2	-Vo
	3	+Vo

Min. DIN 4 Pin with Lock (male)

Type No.	PIN No.	Output	Quick Adapter Accessory
R7B	1	+Vo	Available (Current rating: 7.5A max.)
	2	-Vo
	3	-Vo
	4	+Vo

Min. DIN 4 Pin with Lock (female)

Type No.	PIN No.	Output	Quick Adapter Accessory
R7BF	1	+Vo	None
	2	-Vo
	3	-Vo
	4	+Vo

DIN 5 Pin (male)

Type No.	PIN No.	Output	Quick Adapter Accessory
R1B	1	-Vo	Available (Current rating: 7.5A max.)
	2	-Vo
	3	+Vo
	4	-Vo
	5	+Vo

Stripped and tinned leads

Type No.	PIN No.	Output	Quick Adapter Accessory
by custom	1	+Vo	None
by custom	2	-Vo	None

Length of Land L1 by request (MW's standard length, L: 25 mm, L1: 5 mm). Note: The wire color is for reference only, please refer to the actual product.

Installation Manual: Please refer to: http://www.meanwell.com/manual.html

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