The AA-250-24-44 is an Air-to-Air thermoelectric assembly (TEA) that uses impingement flow to transfer heat. It offers dependable compact performance by cooling objects via convection. Heat is absorbed and dissipated through high density heat exchangers equipped with air ducted shrouds and brand name fans. The heat pumping action occurs from custom designed thermoelectric modules that achieve a high coefficient of performance (COP) to minimize power consumption. This model has been designed to pass rigorous Telcordia test requirements conducted by our customers such as earthquake resistance, salt, fog, wind-driven rain, high temperature exposure, and dust contaminants. This is due to the selection of world class components such as brand fans with the highest degree of environmental protection and lifetime guaranteed waterproof connectors heavy duty anodization on the high-density heat sinks overheat protection and double environmental seals for the thermoelectric modules.
Electrical and Thermal Performance Curves
Y - Axis
X - Axis
Electrical Operating Points
Selected Operating Point
Cooling Power (Qc) = Watts TEM Voltage = Volts TEM Current = Amps Fan Voltage = 24.0 Volts Fan Current = 3.00 Amps Power Supply = Watts TEM COP = Power Dissipated (Qh) = Watts Thot = °C
Cooling Power (Qc) = 67.6 Watts TEM Voltage = 17.2 Volts TEM Current = 5.7 Amps Fan Voltage = 24.0 Volts Fan Current = 3.00 Amps Power Supply = 170.5 Watts TEM COP = 0.7 Power Dissipated (Qh) = 238.1 Watts
Cooling Power (Qc) = 179.2 Watts TEM Voltage = 44.5 Volts TEM Current = 15.8 Amps Fan Voltage = 24.0 Volts Fan Current = 3.00 Amps Power Supply = 773.8 Watts TEM COP = 0.3 Power Dissipated (Qh) = 953.0 Watts
* Any information furnished by Laird and its agents is believed to be accurate and reliable. All specifications are subject to change without notice.
Temperature Range (External Ambient)1
-40°C - 55°C ( -40°F - 131°F )
Temperature Range (Internal Enclosure)
-20°C - 55°C ( -4°F - 131°F )
24.0 VDC nominal / 28.0 VDC maximum
12.1 A running / 15.1 A startup
Sound Level (1 m distance)
Degree of Protection (Unit)2
6.30 kg ( 13.89 lbs )
Mounting Hole Location
1Controller function shall not operate the external fan during heating mode.
2Rating for unit without protective shroud. A higher degree of protection can be obtained with external shroud.
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