MEAN WELL AD-155A is a closed-frame 155 W switching power supply from the AD-155 series, designed with single-output power plus battery charger / UPS function for backup-powered control systems. The AD-155A configuration provides a 13.8 V main output and 13.3 V battery output, with the official MEAN WELL English datasheet listing 10.5 A rated current on CH1 and 0.5 A rated current on CH2. Technical content for this listing was cross-checked against the official MEAN WELL AD-155 English datasheet. Use the datasheet in the Reference Documents section before final wiring, derating, or safety approval work. Features 155 W AD-155 series platform - Closed-frame AC/DC power supply with battery charger / UPS function for backup-powered equipment. AD-155A output configuration - Official datasheet lists 13.8 V / 10.5 A on CH1 and 13.3 V / 0.5 A on CH2. Universal AC input - Supports 88-264 VAC input and 124-370 VDC input according to the official datasheet. Power factor correction - Datasheet lists PF > 0.92 at full load. Battery charger and UPS function - Designed for systems that need battery backup and battery-low monitoring. Protection functions - Datasheet lists overload, over-voltage, battery low, and battery polarity protection. Free-air convection cooling - Fanless cooling path for suitable installations with correct derating and ventilation. Safety and EMC approvals - Official datasheet lists UL62368-1, BS EN/EN62368-1, AS/NZS 62368.1, and related EMC compliance. Specifications Product MEAN WELL AD-155A switching power supply Series AD-155 Function Single output with battery charger / UPS function Rated power 151.55 W CH1 DC voltage 13.8 V CH1 rated current 10.5 A CH1 current range 0-11.5 A CH2 battery output voltage 13.3 V CH2 rated current 0.5 A CH2 current range 0-0.5 A CH1 voltage adjustment range 12-14.5 V Ripple and noise 150 mVp-p max. on CH1 Voltage tolerance +/-2.0% on CH1 Line regulation +/-0.5% Load regulation +/-0.5% Input voltage range 88-264 VAC / 124-370 VDC Frequency range 47-63 Hz Power factor PF > 0.92 at full load Efficiency 80% typical AC current 2.5 A at 115 VAC / 1.5 A at 230 VAC Inrush current Cold start 23 A at 115 VAC / 45 A at 230 VAC Leakage current < 1 mA at 240 VAC Overload protection CH1 105-135%; CH2 0.51-0.9 A rated output power Over-voltage protection CH1 15.87-18.63 V Battery low threshold 10 V +/-0.8 V Working temperature -10 to +60 degC, see derating curve Working humidity 20-90% RH non-condensing Storage temperature / humidity -20 to +85 degC, 10-95% RH Dimensions 199 x 110 x 50 mm Packing weight 0.88 kg Official datasheet file AD-155-SPEC, 2024-09-30 Reference Documents MEAN WELL AD-155 Series Datasheet - English PDF Application Backup-powered control cabinets - Use in systems that need DC output plus battery backup behavior. Security and access systems - Support alarm panels, access control, and monitoring equipment with battery support. Industrial automation - Power low-voltage controllers and peripheral circuits where UPS-style backup is needed. Communication equipment - Provide regulated DC power for infrastructure devices after confirming load and derating. Battery-maintained electronics - Integrate into equipment that needs battery-low monitoring and charger functionality. Packing List Item Quantity MEAN WELL AD-155A switching power supply x1 FAQ .faq-accordion details { border-bottom: 1px solid #e6eef8; padding: 14px 0; } .faq-accordion summary { list-style: none; cursor: pointer; font-size: 16px; font-weight: 700; color: #1f2933; position: relative; padding-right: 32px; } .faq-accordion summary::-webkit-details-marker { display: none; } .faq-accordion summary::after { content: "\203A"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%) rotate(90deg); color: #007fff; font-size: 28px; line-height: 1; transition: transform 0.2s ease; } .faq-accordion details[open] summary::after { transform: translateY(-50%) rotate(270deg); } .faq-accordion p { margin: 12px 0 0; color: #4b5563; line-height: 1.65; } What is the AD-155A output configuration? The official MEAN WELL datasheet lists CH1 as 13.8 V / 10.5 A and CH2 as 13.3 V / 0.5 A. Does it include battery charger / UPS functionality? Yes. The AD-155 series is listed by MEAN WELL as a single-output power supply with battery charger / UPS function. What input voltage range does it support? The official datasheet lists 88-264 VAC and 124-370 VDC input. Is it fanless? The datasheet lists cooling by free-air convection. Final equipment must still provide proper ventilation and derating. Where can I check the official parameters? Use the MEAN WELL AD-155 Series English PDF in the Reference Documents section. What is included? This listing includes one MEAN WELL AD-155A switching power supply.
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