E-mail: [email protected], URL: www.boreasa.com Miniature Centrifugal Blower * Housing / Impeller Materials: Thermoplastics * Three Phase Brushless Motor w/o Hall Sensor * Note: This blower uses a brushless motor and needs a driver to operate 421 301 Note: - Performances are dependent on the driver used and the test conditions. The data in this spec. sheet was obtained using Boreasa test chamber at 20°C (±2°C) and sea level, and using a Boreasa D30/5/4QF-E2 driver. It may be different than data measured in other conditions or with other drivers. - When used as a vacuum, the blower performance might be less than shown herein, depending on the operating point. - Specifications are subject to change without notice. - Boreasa blowers have been designed and are manufactured to meet the medical device industry requirements. However, it is not possible to test blowers in all conceivable customer application configurations. Consequently, to be used in life support equipment, blowers must be life tested and validated by customers, in their actual application conditions, in a statistically meaningful quantity.

E-mail: [email protected], URL: www.boreasa.com #1 At given working points and cycle. #2 Measured at distance of 1 meter from inlet, with open inlet, outlet connected to breathing tube and 4 mm orifice in sound chamber at 10 cmH2O. N o te : - Working point is an example close to 50% of max. flow. - The phase inductance and impedance are measured by LCR at 1 kHz, including the connector. - Tolerances based on specified speed data according to ISO 13348, grade 4: pressure ±10%, power ±16%, speed ±5% and flow rate ±5%.

E-mail: [email protected], URL: www.boreasa.com Electrical Connections Description Motorwinding U Motorwinding V Motorwinding W Blower Limits and Warning Manufacturing System * Max. allowed temp. on heat-sink: 75°C * Blocking the impeller more than 20 seconds may result in damages or destruction of the blower. * A minimum air flow is required at VCC higher than Nominal Voltage to avoid the air in the blower to overheat by compressing and mixing. Blowers manufactured by ISO9001-2015 certified manufacturer.