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Mean Well ENP-120-48 Desktop Type Chargers 120W 55.2V 2.2A - Level VI Power Supply

Name: Mean Well ENP-120-48 Desktop Type Chargers 120W 55.2V 2.2A - Level VI Power Supply
Brand: Mean Well
SKU: ENP-120-48
Price: 68.53 USD
Availability: InStock

energy efficiency level VIno load power consumption<0.15W125% peak load capabilityfanless

SKU ENP-120-48

$68.53 USD

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Overview

ENP-120-48 is the 55.2V output model of this series: rated current 2.2A, typical efficiency 91.5%.

ENP-120 series is a 120W desktop type power supply working perfectly for communication related applications. Observing the standard 7" width size in the land mobile radio field, it provides the most frequently used voltage in the communication field. With the rugged mechanical design along with the high efficiency circuitry, it operates for the ambient temperature range -30℃~+70℃ under free air convection.

Features

Universal AC input / Full range
Built-in active PFC function
Energy efficiency Level Ⅵ
No load power consumption <0.15W
Comply with EISA 2007/DoE, NRCan and EU ErP
125% peak load capability
Fanless design, cooling by free air convection
Protection: Short circuit / Overload / Over voltage / Over temperature
3 years warranty

Specifications

ENP-120-48Specifications from the official datasheet (2026-03-31 edition)

OUTPUT

DC VOLTAGE: 55.2V
RATED CURRENT: 2.2A
CURRENT RATED: 0 ~ 2.2A
CURRENT PEAK^Note.2: 2.75A
WATTAGE RATED: 121W
WATTAGE PEAK^Note.2: 151.8W
RIPPLE & NOISE (max.)^Note.3: 350mVp-p
VOLTAGE ADJ. RANGE: 47.5 ~ 58.8V
VOLTAGE TOLERANCE^Note.4: ±1.0%
LINE REGULATION^Note.5: ±0.5%
LOAD REGULATION^Note.6: ±0.5%
SETUP, RISE TIME^Note.7: 1000ms, 100ms at full load
HOLD UP TIME (Typ.): 20ms at full load

INPUT

VOLTAGE RANGE^Note.8: 90 ~ 264VAC 127 ~ 370VDC
FREQUENCY RANGE: 47 ~ 63Hz
POWER FACTOR (Typ.): PF>0.98/115VAC, PF>0.95/230VAC at full load
EFFICIENCY (Typ.): 91.5%
AC CURRENT (Typ.): 1.25A/115VAC 0.63A/230VAC
INRUSH CURRENT (Typ.): COLD START 65A at 230VAC
LEAKAGE CURRENT: <3.5mA / 240VAC
NO LOAD POWER CONSUMPTION: <0.15W

PROTECTION

SHORT CIRCUIT: Protection type : Constant current limiting, recovers automatically after fault condition is removed
OVERLOAD: Normally works within 110 ~ 125% rated output power for more than 3 seconds and switches to constant current limiting, with auto-recovery after the peak load condition is removed Constant current limiting, if >125% rated power, with auto-recovery after the overload condition is removed
OVER VOLTAGE: 62.1 ~ 72.9V Protection type : Shut down o/p voltage, re-power on to recover
OVER TEMPERATURE: Shut down O/P voltage, recovers automatically after temperature goes down

ENVIRONMENT

WORKING TEMP.: -30 ~ +70℃ (Refer to "Derating Curve")
WORKING HUMIDITY: 20 ~ 95% RH non-condensing
STORAGE TEMP., HUMIDITY: -40 ~ +85℃, 10 ~ 95% RH non-condensing
TEMP. COEFFICIENT: ±0.05%/℃ (0 ~ 50℃)
VIBRATION: 10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes

SAFETY & EMC

SAFETY STANDARDS: IEC62368-1, UL62368-1, EAC TP TC 004 approved; Meet BS EN/ EN62368-1
WITHSTAND VOLTAGE: I/P-O/P:3KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC
ISOLATION RESISTANCE: I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION: Parameter Standard Test Level

Conducted BS EN/EN55032 (CISPR32) / FCC PART15 (CISPR22) Class B
Radiated BS EN/EN55032 (CISPR32) / FCC PART15 (CISPR22) Class B
Harmonic Current BS EN/EN61000-3-2
Voltage Flicker BS EN/EN61000-3-3
EMC IMMUNITY^{Note 9}: BS EN/EN55024

Parameter Standard Test Level

ESD BS EN/EN61000-4-2 Level 3, 8KV air; Level 2, 4KV contact
Radiated BS EN/EN61000-4-3 Level 2, 3V/m
EFT / Burst BS EN/EN61000-4-4 Level 2, 1KV
Surge BS EN/EN61000-4-5 Level 2, 1KV/Line-Line,Level 3, 2KV/Line-Earth
Conducted BS EN/EN61000-4-6 Level 2, 3Vrms
Magnetic Field BS EN/EN61000-4-8 Level 1, 1A/m
Voltage Dips and Interruptions BS EN/EN61000-4-11 >95% dip 0.5 periods, 30% dip 25 periods, >95% interruptions 250 periods

Parameter	Standard	Test Level
Conducted	BS EN/EN55032 (CISPR32) / FCC PART15 (CISPR22)	Class B
Radiated	BS EN/EN55032 (CISPR32) / FCC PART15 (CISPR22)	Class B
Harmonic Current	BS EN/EN61000-3-2
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
Radiated	BS EN/EN61000-4-3	Level 2, 3V/m
EFT / Burst	BS EN/EN61000-4-4	Level 2, 1KV
Surge	BS EN/EN61000-4-5	Level 2, 1KV/Line-Line,Level 3, 2KV/Line-Earth
Conducted	BS EN/EN61000-4-6	Level 2, 3Vrms
Magnetic Field	BS EN/EN61000-4-8	Level 1, 1A/m
Voltage Dips and Interruptions	BS EN/EN61000-4-11	>95% dip 0.5 periods, 30% dip 25 periods, >95% interruptions 250 periods

OTHERS

MTBF: 1997.9K hrs min. Telcordia SR-332 (Bellcore) ; 257.1K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 192*178*45.5mm (L*W*H)
PACKING: 0.98Kg; 10pcs/10.8Kg /1.38CUFT

Test conditions and notes10

1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.
2. Peak current or peak power up to 3 seconds is provided.
3. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1μF & 47μF parallel capacitor.
4. Tolerance : includes set up tolerance, line regulation and load regulation.
5. Line regulation is measured from low line to high line at rated load.
6. Load regulation is measured from 0% to 100% rated load.
7. Length of set up time is measured at cold first start. Turning ON/OFF the power supply very quickly may lead to increase of the set up time.
8. Derating may be needed under low input voltages. Please check the derating curve for more details.
9. 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 )
10. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).

Technical drawings

ENP-120-48 Block Diagram — Block Diagram

ENP-120-48 E N P - 1 2 0 series — E N P - 1 2 0 series

ENP-120-48 E N P - 1 2 0 series (2) — E N P - 1 2 0 series (2)

ENP-120-48 Terminal Pin No. Assignment (TB1) — Terminal Pin No. Assignment (TB1)

Typical applications

Land mobile radio system
Surveillance system
TV antenna facility

Downloads

Certificates8

Mean Well ENP-120-12-24-48_GEMS Certificate PDF Download

Mean Well ENC-ENP-120-CB(UL) Certificate PDF Download

Mean Well ENP-ENC-120-EMC Certificate PDF Download

Mean Well ENP-120-CE-dec Certificate PDF Download

Mean Well ENP-120-UK-dec Certificate PDF Download

Mean Well ENP-ENC-120-FCC Certificate PDF Download

Mean Well 0147421-EAC Certificate PDF Download

Mean Well E183223 UL Certificate PDF Download

Test reports1

Mean Well ENP-120-48 Test Report PDF Download

Catalogues1

Mean Well Catalog (Industrial) PDF Download

FAQ

What output does the Mean Well ENP-120-48 provide?

The ENP-120-48 is rated for 121W output at 55.2V DC and 2.2A. That makes it suitable for equipment or battery-charging applications designed for a 55.2V supply within that current range.

Is the ENP-120-48 a desktop-style power supply?

Yes. This model is a desktop-type unit in Mean Well's ENP-120 series, with a compact enclosure measuring 192 x 178 x 45.5 mm. It fits applications where a self-contained external power supply is preferred.

Can this model operate in demanding temperature conditions?

Yes. The ENP-120-48 has a specified operating temperature range of -30°C to +70°C. Output derating applies at higher ambient temperatures, so check the derating curve on the datasheet.

What protection features are included in the ENP-120-48?

This model includes short circuit, overload, over-voltage, and over-temperature protection. Its overload protection is specified at 110% to 125% with constant current limiting and auto-recovery.

Is the ENP-120-48 designed for energy-efficient operation?

Yes. The ENP-120-48 meets Energy Efficiency Level VI and has no-load power consumption below 0.15W. Its typical efficiency is 91.5%.

What input range and compliance standards does this power supply support?

The ENP-120-48 accepts a universal AC input range of 90 to 264VAC, and it also supports 127 to 370VDC input. It is certified to IEC62368-1 and UL62368-1 safety standards and meets EMC standards including EN55032 Class B.

What kinds of applications is the ENP-120-48 best suited for?

This model is suited to applications that need a regulated 55.2V DC desktop power source up to 121W, especially where energy efficiency matters. Its active PFC and 125% peak load capability make it a strong fit for commercial and industrial use cases that require a dependable external supply.

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