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Mean Well GSM25B18-P1J Power Supply 25W 18V 1.38A

Name: Mean Well GSM25B18-P1J Power Supply 25W 18V 1.38A
Brand: Mean Well
SKU: GSM25B18-P1J
Price: 18.54 USD
Availability: InStock

SKU GSM25B18-P1J

$18.54 USD

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GSM25B18-P1J

GSM18B18-P1J 2 Pole Low stock$20.48 USD

GSM25B18-P1J 2 Pole Low stock$18.54 USD

GSM40B18-P1J 2 Pole Low stock$25.70 USD

GSM40A18-P1J 3 Pole Low stock$25.70 USD

GSM60B18-P1J 2 Pole Low stock$28.64 USD

GSM60A18-P1J 3 Pole In stock$28.64 USD

Product variants

In stock

Overview

GSM25B18-P1J is the 18V output model of this series: rated current 1.38A, typical efficiency 86%. Type P1J: Plug for standard model, 2.1$\phi$ x 5.5$\phi$ x11mm, c+, tuning fork type.

GSM25B is a highly reliable, 25W desktop style single-output green medical adaptor series. This product is equipped with a 2-pin (no FG) standard IEC320-C8 power plug, adopting the input range from 80VAC to 264VAC. The entire series supplies different output voltages between 5VDC and 48VDC that can satisfy the demands for various kinds of miniature medical devices. The circuitry design meets the international medical standards (2×MOPP), having an ultra low leakage current (<50 μA), fitting the medical devices in direct electrical contact with the patients. With the efficiency up to 88% and the extreme low no-load power consumption below 0.1W, GSM25B 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, providing the double insulation that effectively prevents electrical shock. GSM25B is approved with the international medical safety certificates.

Features

2 pole AC inlet IEC320-C8, Class Ⅱ power unit
Medical safety approved (2×MOPP) according to ANSI/AAMI ES60601-1/-1-11, BS EN/EN60601-1/-1-11
Extremely low leakage current
No load power consumption<0.1W
Energy efficiency Level Ⅵ and meet CoC version 5 ( except 5~9V for Level Ⅴ)
-25~+60℃ wide range working temperature
Protections: Short circuit / Overload / Over voltage
LED indicator for power on
Various DC plug quick adapter accessory available (Plug kit sold seperateley, please refer to : https://www.meanwell.com/upload/pdf/DC_plug.pdf)
3 years warranty

Specifications

GSM25B18-P1JSpecifications from the official datasheet (2026-04-03 edition)Download datasheet PDF

OUTPUT

SAFETY MODEL NO.: GSM25B18
DC VOLTAGE^Note.2: 18V
RATED CURRENT: 1.38A
CURRENT RANGE: 0 ~ 1.38A
RATED POWER (max.): 25W
RIPPLE & NOISE (max.)^Note.3: 150mVp-p
VOLTAGE TOLERANCE^Note.4: ±3.0%
LINE REGULATION^Note.5: ±1.0%
LOAD REGULATION: ±3.0%
SETUP, RISE TIME^Note.6: 500ms, 30ms / 230VAC 1000ms, 30ms / 115VAC at full load
HOLD UP TIME (Typ.): 16ms / 230VAC 16ms / 115VAC at full load

INPUT

VOLTAGE RANGE^Note.7: 80 ~ 264VAC 113 ~ 370VDC
FREQUENCY RANGE: 47 ~ 63Hz
EFFICIENCY (Typ.): 86%
AC CURRENT (Typ.): 0.7A / 115VAC 0.35A / 230VAC
INRUSH CURRENT (Typ.): 55A / 230VAC 30A / 115VAC
LEAKAGE CURRENT(max.): Touch current < 50μA/264VAC

PROTECTION

OVERLOAD: 105 ~ 170% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE: 18.9 ~ 25.2V Protection type : Shut down o/p voltage, re-power on to recover

ENVIRONMENT

WORKING TEMP.: -25 ~ +60℃ (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% / ℃ (0~40℃)
VIBRATION: 10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes

SAFETY & EMC (Note. 8)

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, EAC TP TC 004 approved
ISOLATION LEVEL: Primary-Secondary: 2xMOPP
WITHSTAND VOLTAGE: I/P-O/P:4KVAC
ISOLATION RESISTANCE: I/P-O/P:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION: Parameter Standard Test Level

Conducted emission BS EN/EN55011 (CISPR11), FCC PART 15 / CISPR22, CAN ICES-3(B)/NMB-3(B),MSIP KN32 Class B
Radiated emission BS EN/EN55011 (CISPR11), FCC PART 15 / CISPR22, CAN ICES-3(B)/NMB-3(B),MSIP KN32 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
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, CAN ICES-3(B)/NMB-3(B),MSIP KN32	Class B
Radiated emission	BS EN/EN55011 (CISPR11), FCC PART 15 / CISPR22, CAN ICES-3(B)/NMB-3(B),MSIP KN32	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
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: 3887.1K hrs min. Telcordia SR-332 (Bellcore) ; 791.9K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 79*54*33mm (L*W*H)
PACKING: 235g ; 60pcs / 15.1Kg / CARTON

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): Plug for standard model, 2.1$\phi$ x 5.5$\phi$ x11mm, 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. 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 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

GSM25B18-P1J Derating Curve — Derating Curve

GSM25B18-P1J Mechanical Specification — Mechanical Specification

GSM25B18-P1J DC output plug — DC output plug

GSM25B18-P1J G S M 2 5 B series — G S M 2 5 B series

Typical applications

Blood glucose meter
Blood pressure meter
Nebulizer
Inhaler
Portable medical device

Downloads

Datasheet1

GSM25B18-P1J datasheetGSM25B-SPEC.PDF · 2026-04-03 edition PDF Download

Certificates7

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

UL Certificate (GSM25B)(EN) PDF Download

FCC Certificate (GSM25B)(EN) PDF Download

CB Certificate (GSM25B)(EN) PDF Download

NRCAN Certificate (GSM25B)(EN) PDF Download

TUV Certificate(GSM25B)(EN) PDF Download

EMC Certificate(GSM25B)(EN) PDF Download

Catalogues3

Mean Well Medical Catalog PDF Download

Mean Well Adaptor Catalog PDF Download

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the GSM25B18-P1J for an 18V industrial controller or sensor hub?

Yes, this model is a constant-voltage 18V supply rated for 25W and 1.38A, which fits equipment designed for a fixed 18V DC input. It is better suited to compact controllers, sensor hubs, or embedded devices whose total load stays within that 25W output limit.

Is this 18V power supply suitable for embedded electronics or test equipment?

It can be a fit for embedded electronics or bench-style equipment that specifically requires 18V constant-voltage power and draws no more than 1.38A. The wide 80-264VAC input also makes it practical where mains input may vary across sites or regions.

Can I use this for low-power automation accessories that need 18V DC?

Yes, if the accessory is designed for 18V DC and its total demand remains within 25W. The constant-voltage output is intended for equipment that expects a stable 18V source rather than a constant-current driver.

How do I know if 25W is enough for my 18V device?

This supply delivers up to 25W at 18V, with a maximum output current of 1.38A. If your device requires more than 1.38A or more than 25W, you should choose a higher-capacity model.

Is the GSM25B18-P1J suitable for outdoor or harsh environments?

The listed operating temperature is -25°C to +60°C, with output derating at higher ambients per the derating curve, so the temperature range covers many indoor industrial environments. However, no IP rating is provided in the product specs here, so outdoor or washdown suitability should not be assumed from this data alone.

Payment & Security

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Model	Power	Voltage	Current
Mean Well GSM25U24-P1J Power Supply 25W 24V 1.04A	25W	24V	1.04A	View

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