Air-to-air outdoor cooler from Laird cools mobile base stations and cell towers

Laird offers the AA-480 air-to-air outdoor cooler that protects critical telecommunication cabinets, energy storage systems and back-up battery systems by providing greater cooling power and increased reliability versus other units currently on the market. The cooler suits new and retrofit mobile base station and cell tower projects. It replaces bulky, more expensive cooling units — lowering operating costs and saving time on maintenance.


When the power to a cellular antenna tower goes out, emergency batteries can provide power for up to six hours. But battery life is significantly reduced by exposure to temperatures outside the optimal range. Long life operation is required in wireless base station and cell tower applications to maximize uptime and maintain low cost of ownership. The AA-480 Series can operate for much longer with less power consumption than previously designed thermoelectric based cooling units, ensuring more reliable cellular coverage during power outages.


With 480 W of cooling power and a coefficient of performance (COP) rating of 1, the AA-480 series thermoelectric assembly (TEA) has nearly 50% more efficiency than standard air-to-air units offered today. This saves installation and maintenance costs for users as well as space inside mobile base station and cell tower cabinets. It uses impingement flow to transfer heat.


The AA-480 Series TEA has been designed to pass rigorous Telcordia test requirements for outdoor environments, and the gaskets, connectors and fans provide a NEMA 4 seal for the enclosure. The unit has an operating temperature range of -40°C to +55°C and is tested up to 100K power cycles.


Key System Features:

  • Input power accommodates a nominal/float voltage of 24/28 or 48/56 Vdc
  • Environmentally friendly solid state operation with no CFC refrigerants
  • Fans can be controlled for reduced noise
  • Cooling and heating in the same unit to maintain compact form factor


The AA-480 Series complements the Laird product family of outdoor coolers for harsh applications but can also be easily retrofitted as a substitute for compressor based air conditioners used in medical diagnostic and analytical instrumentation for cooling and heating applications where maximizing system uptime is required. For more information on the AA-480 Series outdoor cooler visit http://www.lairdtech.com/products/category/all?keywords=aa-480. Laird: www.lairdtech.com

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