Delta PFB0824GHE DC24V 0.54A 8038 变频器风扇PFB1224GHE DC24V 1.62A 12038变频器风扇FFB1524UHG DC24V 4.80A 17251变频器风扇THB1724BG DC24V 8.40A 17251变频器散热风扇AFB0624VH DC24V 0.17A 6025变频器散热风扇AFB0624EH DC24V 0.36A 6025变频器散热风扇PFB0924GHE DC24V 0.76A 9238变频器风扇PFB0924DHE DC24V 1.74A 9038变频器风扇Delta台达全线工业风扇批发