Product Description:

The 5AC803.FA01-00 cooling module is manufactured by B & R Automation as part of the 5AC CNC Addon Modules series. It is supplied as a compact fan assembly that directs forced air across temperature-sensitive circuitry inside CNC controllers used in industrial automation. By moving air across internal electronics, it helps stabilize temperatures in enclosed control hardware during extended machine cycles. This type of module is commonly used where processor boards, power supplies, and interface cards are installed close together and natural airflow inside the enclosure is limited. The housing follows the mechanical outline used for the series, so it mounts directly to the designated slots without extra brackets.

Each fan has a square footprint of 40 mm in height and 40 mm in width, while the combined stack extends only 10 mm into the cabinet and leaves clearance for adjacent wiring ducts. That slim profile helps preserve routing space around the controller and reduces interference with nearby components. When the impellers turn at the maximum speed of 6100 rpm, the module supplies enough airflow to cool densely populated boards without relying on external blowers. The airflow path is intended for localized cooling rather than whole-cabinet ventilation, so the module supports the controller area directly. Acoustic output is limited to 21 dB, so the added noise remains well below that of typical machining operations.

The plate carries 3 identical fans that distribute airflow evenly across wide heat sinks, which helps reduce localized hot spots and keeps cooling more uniform across the assembly. Each impeller runs on a double ball bearing system, a bearing arrangement that supports either horizontal or vertical mounting without accelerated wear. Under moderate ambient conditions, the projected service interval reaches 95,000 h at 20 °C, while continuous duty in warmer enclosures reduces that interval to 29,000 h at 70 °C. This difference shows that operating temperature has a direct effect on expected fan life.