Carlo Gavazzi has introduced a new digital soft-starter providing all the features required for optimal control of single-phase compressors, such as those used in geothermal and similar heat pump installations. Rated up to 25A maximum continuous current for 230VAC, 50Hz motors, the RSBS Compact starter incorporates special control algorithms to limit starting current and on-board diagnostics to ensure reliability for this increasingly popular form of environmentally-friendly heating.