The CF-4-390-500-30S-3P is a three phase (400V 50Hz) 4 Pole (1300-1400rpm) case fan fitted with 500mm axial fan blade. Mounted on 12 fixing holes (542mm PCD). The case fan is rated at IP54 with Class B (130C) insulation. A fan assembly offering superb build quality by Remco. The CF-4-390-500-30S-3P is a three phase (400V 50Hz) 4 Pole (1300-1400rpm) case fan fitted with 500mm axial fan blade. Mounted on 12 fixing holes (542mm PCD). The case fan is rated at IP54 with Class B (130C) insulation. A fan assembly offering superb build quality by Remco.