... resistance to atmospheric agents.HERMETIC COMPRESSORSSingle phase (mod.08÷12.5) compressors, 3-phase scroll compressor (mod.16÷50), ... compressor.AXIAL FANSExternal rotor type axial fans, equipped with single phase direct drive motors, low noise 6 poles, protection level ... pump protection breaker(5)Fan motor protection breaker;(6)Control circuit protection breaker;(7)Phase sequence relay (only for 3 ...