A frequency converter is a converter that uses AC voltage to generate an AC voltage that can be changed in frequency and amplitude for the direct supply of electrical machines such as pumps or aerators. The speed control of pumps offers great energy saving potential! Due to the exact setting of the power, unnecessary energy is no longer used. The pump now works exactly according to the requested output. The frequency converter SC is available in 230V AC as well as in a 400V AC version.