For reference, fans I've seen in switches (will be extended in the future)
ICX6450-24: 1 Fan
Foxconn PIA040H12L
40x40x28mm, 12V DC, 0.1A (0.16A printed on fan), Max Airflow = 0.33m³/min or 11.67CFM, Max Static Pressure = 11.9mm H2O / 0.47in H2O / 117Pa, 35.6db(A), 8500 RPM
Ball Bearing?
Tacho
ICX6450-24P: 2 Fans
Nidec W40S12BMA5-52, 40x40x28mm, 12V DC, 0.12A (0.14A printed on fan), Max Airflow = 0.31m³/min or 10.9CFM, Max Static Pressure = 101Pa or 0.41in H2O, 34.5dB(A), 8500 RPM, -10°C - +70°C, MTBF: 70,000h @ 40°C
Part Number W40S12BMA5-52 decoded:
W = Vane Axial, Closed Flange
40 = 40mm
S = 28mm thickness
12 = 12V
B = Ball Bearings
M = Medium Speed
A = Generation
5 = Blade count
-52 = Tachometer (no other options like PWM)
PSA: Replacing those fans with Delta EFB0412VHD-R00 will have the switch mark them as failed, because the R has a locked rotor sensor and NOT a Tachometer.
ICX6450-48: 1 Fan, Nidec W40S12BMA5-52 (see above)
ICX7250-48: 2 Fans, Foxconn PIA040H12P
40x40x28mm, 12V DC, 0.59A (0.81A printed on fan), Max Airflow = 0.746m³/min or 26.33CFM, Max Static Pressure = 51.82mm H2O / 2.04in H2O / 508Pa, 53.8db(A), 18000 RPM
Ball Bearing?
Tacho
ICX7250-48P: 3 Fans, Foxconn PIA040H12P
ICX6450-24: 1 Fan
Foxconn PIA040H12L
40x40x28mm, 12V DC, 0.1A (0.16A printed on fan), Max Airflow = 0.33m³/min or 11.67CFM, Max Static Pressure = 11.9mm H2O / 0.47in H2O / 117Pa, 35.6db(A), 8500 RPM
Ball Bearing?
Tacho
ICX6450-24P: 2 Fans
Nidec W40S12BMA5-52, 40x40x28mm, 12V DC, 0.12A (0.14A printed on fan), Max Airflow = 0.31m³/min or 10.9CFM, Max Static Pressure = 101Pa or 0.41in H2O, 34.5dB(A), 8500 RPM, -10°C - +70°C, MTBF: 70,000h @ 40°C
Part Number W40S12BMA5-52 decoded:
W = Vane Axial, Closed Flange
40 = 40mm
S = 28mm thickness
12 = 12V
B = Ball Bearings
M = Medium Speed
A = Generation
5 = Blade count
-52 = Tachometer (no other options like PWM)
PSA: Replacing those fans with Delta EFB0412VHD-R00 will have the switch mark them as failed, because the R has a locked rotor sensor and NOT a Tachometer.
ICX6450-48: 1 Fan, Nidec W40S12BMA5-52 (see above)
ICX7250-48: 2 Fans, Foxconn PIA040H12P
40x40x28mm, 12V DC, 0.59A (0.81A printed on fan), Max Airflow = 0.746m³/min or 26.33CFM, Max Static Pressure = 51.82mm H2O / 2.04in H2O / 508Pa, 53.8db(A), 18000 RPM
Ball Bearing?
Tacho
ICX7250-48P: 3 Fans, Foxconn PIA040H12P
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