H4028-A SERIES – 40mm square x 28mm frame sizes– Thermal / Lock protection type– High static pressure impeller design– Rib type housing– UL/TUV/cTUVus agency listed– RoHs Compliance– Weight 50g– Operating Temperature -10℃~70℃– Ball bearings structure– Custom added-value options(i.e. special leadwires, connector installation and etc.)– Options :Tachometer output signal or Locked rotor output signal PWM duty control Performance Curve Dimension * Speed range at rated voltage is ±10% of rated speed.