• Output Power: 121.99 W (Primary CH1: 105.98 W + Charger CH2: 16.01 W)
• Output Voltage: CH1: 55.2 V DC (adjustable 43.5 – 58 V), CH2: 55.2 V DC
• Output Current: CH1: 0 – 1.92 A, CH2: 0.29 A (Battery Charging)
• Input Voltage Range: 90 – 264 V AC / 127 – 370 V DC, 47 – 63 Hz
• Efficiency: 86%
• Ripple & Noise: ≤ 360 mVp-p
• Inrush Current: max. 30 A @ 115 VAC / 55 A @ 230 VAC
• Standby Consumption: < 100 µA (Battery static discharge current)
• Operating Temperature: −20 °C to +60 °C
• Cooling: Fanless free air convection
• Protections: Short circuit, Overload, Over voltage, Over temperature, Battery low voltage, Battery reverse polarity
• Overvoltage Category: OVC II
• Isolation Voltage: 3000 V AC between input and output
• Dimensions (L x W x H): 159 mm x 97 mm x 30 mm
• Weight: approx. 420 g
• Safety & EMC Standards: UL 62368-1, BS EN/EN 62368-1, AS/NZS 62368.1, EAC TP TC 004, GB 17945-2010
• Status Indicators & Signals: TTL signals (AC OK, Battery disconnect/reverse polarity, Battery low, Battery full, Discharge)
• Warranty: 3 Years

Information about MEAN WELL LAD-120D

Tailored for high-voltage backup infrastructure requiring 55.2 V DC output, the MEAN WELL LAD-120D integrates a dual-channel power unit with a dedicated battery charger and backup UPS unit into a compact 30 mm profile. Non-destructive reverse polarity protection safeguards batteries against wiring errors, while dedicated ON/OFF switches isolate primary and secondary circuits during routine maintenance. Output logic lines provide direct TTL status monitoring signals for real-time tracking of utility power supply status, battery reserve thresholds, and active power discharge states. Built with a high 3 kVAC isolation voltage and optimized for silent, fanless operation, it delivers uninterrupted DC power for public safety networks, central monitoring hubs, and emergency system controllers.