Buy Mean Well GSM18B48-P1J 18W 48V Power Adaptor | Best US Prices

Name: Mean Well GSM18B48-P1J Power Supply 18W 48V 375mA
Brand: Mean Well
SKU: GSM18B48-P1J
Price: 20.48 USD
Availability: InStock

Overview

GSM18B48-P1J is the 48V output model of this series: rated current 0.375A, typical efficiency 88%. Type P1J: Plug for standard model, 2.1φ x 5.5φ x11mm, c+, tuning fork type.

GSM18B is a highly reliable, 18W 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 miniture 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, GSM18B 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. GSM18B 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 seperate, please refer to : https://www.meanwell.com/upload/pdf/DC_plug.pdf)
3 years warranty

Specifications

GSM18B48-P1JSpecifications from the official datasheet (2026-04-03 edition)Download datasheet PDF

OUTPUT

SAFETY MODEL NO.: GSM18B48
DC VOLTAGE^Note.2: 48V
RATED CURRENT: 0.375A
CURRENT RANGE: 0 ~ 0.375A
RATED POWER (max.): 18W
RIPPLE & NOISE (max.)^Note.3: 240mVp-p
VOLTAGE TOLERANCE^Note.4: ±2.0%
LINE REGULATION^Note.5: ±1.0%
LOAD REGULATION: ±2.0%
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.): 88%
AC CURRENT (Typ.): 0.5A / 115VAC 0.25A / 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: 50.4 ~ 64.8V 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: 3889.1K hrs min. Telcordia SR-332 (Bellcore) ; 794.6K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 79*54*33mm (L*W*H)
PACKING: 205g ; 60pcs / 13.3Kg / 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, 2.1φ x 5.5φ 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

GSM18B48-P1J Derating Curve — Derating Curve

GSM18B48-P1J Mechanical Specification — Mechanical Specification

GSM18B48-P1J DC output plug — DC output plug

GSM18B48-P1J G S M 1 8 B series — G S M 1 8 B series

Typical applications

Blood glucose meter
Blood pressure meter
Nebulizer
Inhaler
Portable medical device

Downloads

Datasheet1

GSM18B48-P1J datasheetGSM18B-SPEC.PDF · 2026-04-03 edition PDF Download

Certificates7

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

EMC Certificate (GSM18B)(EN) PDF Download

FCC Certificate (GSM18B)(EN) PDF Download

UL Certificate (GSM18B)(EN) PDF Download

CB Certificate(GSM18B)(EN) PDF Download

TUV Certificate(GSM18B)(EN) PDF Download

NRCan Certificate(GSM18B)(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 GSM18B48-P1J for a 48V telecom or network device with light power demand?

Yes, if the equipment requires constant voltage 48V input and stays within 0.375A and 18W. That makes it a possible fit for lower-power telecom, network, or embedded electronics that use a regulated 48V source.

Is this 48V supply suitable for industrial communication equipment or small control electronics?

It can be suitable for industrial communication equipment or small control electronics designed for 48V DC constant voltage operation. The output is limited to 0.375A and 18W, so it is intended for lighter 48V loads rather than higher-demand hardware.

Can this model power a compact embedded system that runs on 48V DC?

It can, provided the embedded system is specified for 48V constant voltage input and does not exceed 0.375A. The 18W output rating makes it appropriate for compact, low-power 48V electronics.

Is the GSM18B48-P1J compatible with any 48V device?

No, the voltage match alone is not enough. The device must need 48V constant voltage and operate within the supply's 0.375A and 18W maximum output.

Can this 48V power supply be used where temperature swings are common?

The specified operating range is -25°C to +60°C, so it can handle a fairly wide temperature span in many enclosed environments. Since no IP rating is listed in the provided specs, those specifications do not confirm suitability for exposed outdoor, wet, or washdown areas.

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Mean Well GSM18B48-P1J Power Supply 18W 48V 375mA

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Overview

Features

Specifications

OUTPUT

INPUT

PROTECTION

ENVIRONMENT

SAFETY & EMC (Note. 8)

OTHERS

CONNECTOR

MODEL ENCODING

Technical drawings

Typical applications

Downloads

Datasheet1

Certificates7

Catalogues3

FAQ

Payment & Security

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Mean Well GSM18B48-P1J Power Supply 18W 48V 375mA

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