The MCC is a generator-set controller. It is used on generator sets from Volvo Penta, including the D5A TA.
Also fitted to: Volvo Penta D5A T / UCM274C, Volvo Penta D5A T / UCM274D, Volvo Penta D7A T / UCM274D-1, Volvo Penta D7A T / UCM274E, Volvo Penta D7A T / UCM274F.