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The Mean Well LAD-120D is an enclosed AC DC converter designed for chassis mounting. It delivers a rated power of 122W with a 55.2V DC output voltage and a maximum current of 1.21A. This model boasts high efficiency up to 88% and operates within a wide temperature range of -20°C to 60°C.
Key electrical specifications include an input voltage range of 90-264 VAC, adjustable output voltage with a range of -20% to +5%, and protections such as short circuit, overload, over voltage, over temperature, battery low voltage, and battery reverse polarity. The unit also features a withstand voltage of 3 kVAC and an isolation resistance of 100 M Ohms.
With dimensions of 159.0mm x 97.0mm x 30.0mm, the LAD-120D is suitable for various applications. It complies with standard 62368-1 and holds approvals from CB, CE, cURus, EAC, and UKCA agencies. The power supply includes built-in battery charger and UPS functions, with TTL signals for status monitoring, making it ideal for security and fire alarm systems.
The output voltage is 55.2V DC.
The operating temperature range is -20°C to 60°C with derating.
The efficiency is 88%.
It includes short circuit, overload, over voltage, over temperature, battery low voltage, and battery reverse polarity protection.
The input voltage range is 90-264 VAC.
The MTBF is 160,000 hours.
The mounting type is chassis mount.