Cooling Fans produce audible noise below 61 dB(A).

Press Release Summary:

Series MRS20 fans, available with low-speed alarm circuit, provide max airflow of 547 cfm with max static pressure of 1.06 in. of H2O. With fan size of 7.87 in.² x 3.54 in. thick, units incorporate built-in thermal protector and can be used to replace multiple smaller fans and fan trays in cooling applications. Power ratings include single-phase 115 Vac, 60 Hz; single-phase 230 Vac, 60 Hz; and 3-phase 230 Vac, 60 Hz.

Original Press Release:

New High-Efficiency, Low-Noise MRS20 Cooling Fans

Torrance, CA - Oriental Motor USA Corp announces a new addition to the MRS series of ORIX(TM) axial flow fans. The new MRS20 high efficiency, low noise cooling fans, provide a maximum airflow of 547 cfm with a maximum static pressure of 1.06 inches of H2O (model MRS20-BUL) with a single-phase 115 VAC, 60 Hz power input. Other standard models include the single-phase 230 VAC, 60 Hz (MRS20-DUL) and the three-phase 230 VAC, 60 Hz (MRS20-TUL). All models share equivalent air moving performance and are available with a low speed alarm circuit.

Audible noise performance is below 61 dB(A) for all MRS20 models at the rated speed of 3400 rpm. The MRS20 joins the MRS family with a fan size of 7.87" square by 3.54" thick. The MRS20 can be used to replace large numbers of smaller fans and fan trays in cooling applications, thereby reducing the costs of wiring and installation. Based upon computational fluid dynamics simulations the MRS20 fan is capable of a cooling effect roughly equal to that of four fan trays (with 6 fan units, each 4.69 in. (119mm) square).

Operating ambient temperature ranges from -10°C to +60°C (14°F to 140°F). A built in, thermal protector provides safe operation. For more information please visit our Web site at or call (800) 406-7484, ext. 843

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