• Output Power: 152.75 W
• Output Voltage: CH1: 27.6 V, CH2: 5 V, CH3: 27.1 V
• Output Current: CH1: 4.5 A, CH2: 3 A, CH3: 0.5 A
• Input Voltage Range: 88 – 264 V AC / 124 – 370 V DC, 47 – 63 Hz
• Efficiency: 81%
• Ripple & Noise: CH1: 150 mVp-p, CH2: 100 mVp-p, CH3: 200 mVp-p
• Inrush Current: Cold Start 23 A @ 115 VAC / 45 A @ 230 VAC
• Leakage Current: < 1 mA / 240 VAC
• Operating Temperature: -10 °C to +60 °C
• Cooling: Free air convection
• Protection Functions: Short circuit, Overload, Over voltage, Battery low, Battery polarity
• Voltage Adj. Range: CH1: 24 – 29 V
• Isolation Voltage: 3000 V AC (I/P-O/P), 2000 V AC (I/P-FG), 500 V AC (O/P-FG)
• Dimensions (L x W x H): 199 mm x 110 mm x 50 mm
• Weight: 1.0 kg
• Safety & EMC Certificates: UL62368-1, TUV EN62368-1, EAC TP TC 004, BS EN/EN55032
• PFC Function: Built-in active PFC (PF > 0.92)
• Manufacturer Warranty: 2 Years

Information about the MEAN WELL ADD-155B

The MEAN WELL ADD-155B is a high-performance 155W power supply with an integrated UPS function, specifically engineered for systems requiring 24V battery backup. This model features a sophisticated triple-output design that provides a stable 27.6V main output, a secondary 5V rail for logic circuits, and a dedicated 27.1V battery charging channel. Equipped with built-in active PFC (Power Factor Correction), it ensures high energy efficiency and compliance with global harmonic current standards. The fanless design utilizes natural air convection for cooling, which eliminates mechanical noise and significantly enhances the long-term reliability of the unit in dust-sensitive industrial environments.

Designed for mission-critical security and monitoring infrastructure, the ADD-155B offers specialized battery low and battery polarity protections to safeguard your energy storage assets against accidental damage. The main output (CH1) is highly flexible, featuring a voltage adjustment range of 24V to 29V to account for specific battery chemistry requirements or potential voltage drops over long cable runs. With professional-grade features such as a 100% full load burn-in test and a comprehensive safety suite including UL62368-1 and TUV certification, this power supply is the ideal solution for 24V security systems, emergency telecommunications, and automated control cabinets that demand uninterruptible power delivery.