2002 Volvo KAMD 44. THe port side compressor fuse (7.5 amps) blows after the compressor (turbo booster) has been engaged continuously for 40-50 minutes. The compressors kick on at about 6 knots and stay on until she is up on plane at about 19 knots. In rough seas, I can only run the boat 14-16 knots so the compressors remain on. Has anyone else encountered this problem? what could be the problem?

The boat only has 270 hours and I have religiously maintained her inlcuding the annual oil change for the compressors.