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Mean Well LAD-120B Security/Fire Alarm PSU with Battery Charger/UPS...
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Description
Description
The LAD is a Mean Well power converter.
Key Features
- ✓ DC output voltage adjustable ±10%
- ✓ 3KVAC reinforced I/O isolation
- ✓ Cooling by free air convection
- ✓ Protections: Short circuit / Overload / Over voltage / Over temperature / Reverse polarity / Under voltage
- ✓ Safety approvals: EN/EN61000-4-2 BS EN/EN61000-4-3 BS EN/EN61000-4-4 BS EN/EN61000-4-5 BS EN/EN61000-4-6 BS EN/EN61000-4-8
- ✓ 3 years warranty
Specifications
Specifications
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BrandMean Well
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SeriesLAD Series
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Power Rating120 Watt
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Output Voltage27.6 Volt
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Rated Current3.4 Ampere
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Input Voltage90V~264V
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Standards MetCB,CE,EAC,EMC,RCM,SAA
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Operating Temperature-20°C~60°C
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Warranty3 Year
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Length15.9 cm
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Width9.7 cm
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Height3 cm
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Weight0.42 kg
File Downloads
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Payment & Security
Payment methods
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Frequently Asked Questions
What is the Mean Well LAD-120B designed for?
The LAD-120B is a 120W security and fire alarm power supply with a built-in battery charger and UPS function. It is intended for systems that need a regulated 27.6VDC output with battery backup support and status monitoring signals.
What are the main electrical ratings of the LAD-120B?
This model is rated for 120W output at 27.6VDC with a rated current of 3.4A. Its input range is 90 to 264VAC or 127 to 370VDC, which supports use across a wide range of standard mains conditions.
Does the LAD-120B support battery-backed operation?
Yes. The LAD-120B includes a built-in battery charger, UPS function, and a forced UPS mode for battery maintenance. It is suitable for both lead acid and lithium-ion batteries, making it useful where backup power continuity is required.
What status and fault monitoring signals are available on this power supply?
The LAD-120B provides TTL status signals for AC OK, battery disconnect, battery reverse polarity, battery low, battery full, and discharge. These signals can help with system-level status detection in security or fire alarm applications.
How does the LAD-120B differ from a standard enclosed AC-DC power supply?
Unlike a standard AC-DC power supply that only provides DC output, the LAD-120B combines the power supply, battery charger, and UPS functions in one unit. It is also tailored for security and fire alarm use with battery-related protections and status reporting.
Is the LAD-120B suitable for demanding operating environments?
The unit is rated for operation from -20°C to +60°C, which supports use in a wide range of indoor equipment environments. It also includes protections for short circuit, overload, over voltage, over temperature, battery low voltage, and battery reverse polarity.
What certifications and physical characteristics does the LAD-120B offer?
The LAD-120B is approved to UL62368-1, BS EN/EN62368-1, AS/NZS62368.1, and EAC TP TC 004, with design reference to GB 17945-2010. It has a low-profile 1U form factor at 159 x 97 x 30 mm, weighs 0.42 kg, and carries a 3-year warranty.
