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Mean Well GSM25B05-P1J Power Supply 20W 5V 4A

Name: Mean Well GSM25B05-P1J Power Supply 20W 5V 4A
Brand: Mean Well
SKU: GSM25B05-P1J
Price: 18.54 USD
Availability: InStock

SKU GSM25B05-P1J

$18.54 USD

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Overview

GSM25B05-P1J is the 5V output model of this series: rated current 4A, typical efficiency 80%. 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

GSM25B05-P1JSpecifications from the official datasheet (2026-04-03 edition)Download datasheet PDF

OUTPUT

SAFETY MODEL NO.: GSM25B05
DC VOLTAGE^Note.2: 5V
RATED CURRENT: 4A
CURRENT RANGE: 0 ~ 4A
RATED POWER (max.): 20W
RIPPLE & NOISE (max.)^Note.3: 60mVp-p
VOLTAGE TOLERANCE^Note.4: ±6.0%
LINE REGULATION^Note.5: ±1.0%
LOAD REGULATION: ±6.0%
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.): 80%
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: 5.25 ~ 7.5V 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

GSM25B05-P1J Derating Curve — Derating Curve

GSM25B05-P1J Mechanical Specification — Mechanical Specification

GSM25B05-P1J DC output plug — DC output plug

GSM25B05-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

GSM25B05-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 GSM25B05-P1J for a 5V embedded controller or single-board computer?

Yes, this is a constant voltage 5V supply rated for up to 4A and 20W. It fits embedded controllers and single-board systems that need a regulated 5V DC source and stay within those limits.

Is this a good fit for 5V industrial sensors or small automation electronics?

It can support 5V industrial sensors, compact automation electronics, or control accessories that require constant 5V DC. The connected load needs to remain at or below 4A and 20W.

Can this power supply run a 5V USB-class peripheral or hub used in an IT environment?

It is suitable for 5V peripherals or hubs when the device input is 5V DC and the total demand does not exceed 4A or 20W. The wide 80-264VAC input is useful in varied AC power environments.

How much 5V equipment can I power with the GSM25B05-P1J?

This model provides 5V DC at up to 4A, with 20W maximum output power. A 5V load is compatible only if its total draw stays within both of those ratings.

Is the GSM25B05-P1J meant for indoor use only, or can it handle harsher environments?

The operating temperature range is -25°C to +60°C, with output derating at higher ambients per the derating curve. No IP rating is listed in the provided specs, so exposed outdoor use cannot be verified 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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