Mean Well AD-55A – Economical 55W Single Output with Battery Charger

AD-55A Technical Data

AD-55A Output

Output Number CH1 CH2
DC Voltage 13.8V 0.23A
Current Range 0 ~ 4A ——–
Rated Power  51.38W
Ripple & Noise (max.)100mVp-p ——–
Voltage ADJ. Range CH1: 12 ~ 14.5V
Voltage Tolerance  ±1.0% ——–
Line Regulation ±0.5% ——–
Load Regulation ±0.5% ——–
Setup, Rise Time 800ms, 50ms/230VAC 1600ms, 50ms/115VAC at full load
Hold up Time (Typ.)80ms/230VAC 16ms/115VAC at full load

AD-55A Input

Voltage Range 88 ~ 264VAC 124 ~ 370VDC
Frequency Range 47 ~ 63Hz
Efficiency (Typ.) 71%
AC Current (Typ.) 1.6A/115VAC 1A/230VAC
Inrush Current COLD START 20A/115VAC 40A/230VAC
Leakage Current <1mA / 240VAC

AD-55A Protection

Overload 105 ~ 150% rated output power Protection type : AC Charging Mode : Hiccup mode, recovers automatically after fault condition is removed UPS Mode : Protected by internal fuse
Over Voltage CH1:15.87 ~ 18.63V Protection type : Hiccup mode, recovers automatically after fault condition is removed
Battery Low 9.5 ~ 11V

Function

DC Alarm Signal (Optional) AC fail CN1 PIN2 Battery low under charge voltage 82.5%±2% CN1 PIN1 Normal 0.8V max. Abnormal 5V±0.5V

Environment

Working Temp.-10 ~ +60℃ (Refer to “Derating Curve”)
Working Humidity 20 ~ 90% RH non-condensing
Storage Temp., Humidity -20 ~ +85℃, 10 ~ 95% RH
Temp. Coefficient ±0.03%/℃ (0~50℃) on CH1 output
Vibration 10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes

Safety & EMC

Safety Standards UL62368-1, TUV BS EN/EN62368-1, AS/NZS 62368.1, EAC TP TC 004 approved
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 Compliance to BS EN/EN55032 (CISPR32) Class B, BS EN/EN61000-3-2,-3, EAC TP TC 020
EMC Immunity Compliance to BS EN/EN61000-4-2,3,4,5,6,8,11, BS EN/EN55035, light industry level, EAC TP TC 020

Others

MTBF 2380.9K hrs min. Telcordia SR-332 (Bellcore) ; 548.7K hrs min. MIL-HDBK-217F (25℃)
Dimension 159*97*38mm (L*W*H)
Packing 0.5Kg; 24pcs/12.6Kg/0.83CUFT

Charging Power Solutions – All About MEAN WELL Power SuppliesMean Well chargers are high-quality, reliable, and versatile industrial-grade charging solutions, catering to applications from lead-acid to lithium-ion batteries across various power ranges. Offering intelligent, multistage charging, these units include protection against short circuits, overloads, and overvoltage, often with 3-5 year warranties, suitable for electric vehicles, machinery, and renewable energy systems.

Key Features and Types

Intelligent Charging: Most models feature 2/3/8-stage smart charging curves to optimize battery health.

Battery Types: Default settings are usually for lead-acid batteries, but many models (e.g., ENC/NPB/NPP series) can be customized for Lithium-ion.

Versatile Mounting: Options include standard enclosed units, DIN rail mounting (DRC series) for industrial cabinets, and portable or on-board types.

Programmable: Select models allow charging voltage/current adjustment via built-in potentiometers or specialized software (e.g., SBP-001 programmer).

Power Ratings: Ranges from small 40W DIN rail units up to 3200W high-power chargers.

Popular Series

NPB/NPP Series (450W-1700W): Versatile portable/on-board chargers, often serving as both a charger and power supply.

DRC Series (40W-100W): DIN rail units with built-in UPS functionality.

PB/RPB Series: Dedicated, smart lead-acid battery chargers.

Key Advantages

Safety Protections: All units feature protections against short circuits, overvoltage, and overload.

Reliability: High efficiency and, in many cases, fanless designs or thermal-controlled fans for longevity.

Certifications: Broad global safety approvals (e.g., UL, CB, CE, UKCA).

Established in 1982, headquartered in New Taipei City, MEAN WELL is a Standard Power Supply manufacturer and dedicated to developing specialized industrial power supplies solutions for decades.

Marketed worldwide with its own brand “MEAN WELL”, MEAN WELL power supply has been widely used in all industries and almost everywhere in your life. From home espresso machine, Gogoro electric scooter charging station, to the well-known landmark Taipei 101 skyscraper top lighting and Taoyuan International Airport jet bridge lighting, all of these you will surprisingly find MEWN WELL Power hidden inside, functioning as the heart of the machine, providing stable voltage and current for a long time, and powering up the whole machine and system to operate smoothly.

MEAN WELL Power has been widely used in different industries such as Industrial Automation, LED Lighting/ outdoor signage, Medical, Telecommuting, Transportation and Green Energy applications.

MEAN WELL has maintained a long term, solid relationship with our customers, suppliers, and employees in the spirit of “good intention” and “reliable partner” commitments since the company founded. Over the years, MEAN WELL has built hundreds of reliable partnership around the world.