VIAIR - 400H-A Hard-Mount Automatic CompressorThe 400H Automatic Compressor (400H A) is VIAIRs newest addition to our H model family. This compressor is CE certified and IP54 Rated. With 33% duty cycle, this hard mount compressor is intended to fill tires up to 35 and can be operated for up to 40 minutes at a time before needing to be rested (at up to 40 PSI). The 400H A comes with a built in, moisture resistant On Off power switch and automatic shut off function. The 400H Automatic comes with a