Over 15 years experience of providing support of MEAN WELL Power Supplies
Image shown is a representation only. Exact specifications should be obtained from the product datasheet.
Mean Well LAD-120D Security/Fire Alarm PSU with Battery Charger/UPS...
Please Login for Pricing
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
-
BrandMean Well
-
SeriesLAD Series
-
Power Rating120 Watt
-
Output Voltage55.2 Volt
-
Rated Current1.21 Ampere
-
Input Voltage90V~264V
-
Standards MetCB,CE,EAC,EMC,RCM,SAA
-
Operating Temperature-20°C~60°C
-
Warranty3 Year
-
Length15.9 cm
-
Width9.7 cm
-
Height3 cm
-
Weight0.42 kg
File Downloads
File Downloads
::specification::
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Frequently Asked Questions
What is the Mean Well LAD-120D designed for?
The LAD-120D is a 120W security and fire alarm power supply with a built-in battery charger and UPS function. It is intended for applications that need regulated 55.2V output plus backup power support and status monitoring features.
What are the main electrical ratings of the LAD-120D?
This model is rated for 120W output with a nominal output voltage of 55.2V and rated current of 1.21A. Its AC input range is 90 to 264VAC, and it also supports 127 to 370VDC input.
Does the LAD-120D support battery backup operation?
Yes. The LAD-120D includes a built-in battery charger and UPS function, and it also offers a forced UPS mode for battery maintenance. It is suitable for both lead-acid and lithium-ion batteries.
What status signals are available on the LAD-120D?
This power supply provides TTL status signals for AC OK, battery disconnect, battery reverse polarity, battery low, battery full, and discharge. These signals make it suitable for systems that need power and battery condition monitoring.
What protection features does the LAD-120D include?
The LAD-120D includes protection for short circuit, overload, over voltage, over temperature, battery low voltage, and battery reverse polarity. The battery reverse polarity protection is specified as no-damage protection.
Can the LAD-120D be used in demanding temperature conditions?
Yes. This model is rated for operation from -20°C to +60°C, which suits a wide range of indoor equipment environments. Buyers should still confirm that the final enclosure and system conditions stay within the product's specified operating range.
How compact is the Mean Well LAD-120D?
The LAD-120D uses a 1U low-profile design with dimensions of 159 x 97 x 30 mm. It weighs 0.42 kg, which helps when space and panel density matter in security or fire system builds.
What certifications and compliance standards does the LAD-120D meet?
The LAD-120D is approved to UL62368-1, BS EN/EN62368-1, AS/NZS62368.1, and EAC TP TC 004. Its design also refers to GB 17945-2010, and listed EMC standards include EN55032 Class B and EN61000-4 series requirements.
