A cable connector is provided for coupling to and mounted within the internal cavity of an electrical box for securing an electrical cable passing through an opening in the electrical box. The device also includes a rear cover structure that includes closing shutters. A hydrolysis catalytic converter is disposed in the second exhaust gas manifold section, wherein downstream of the catalytic converters the first and second exhaust gas manifold sections discharge into a common main exhaust gas manifold, in which is disposed a further catalytic converter.