Busbar systems RiLine Connection adaptor Rated current up to 63 A/125 A/250 A/800 A/1600 A, 3-pole and 4-pole, cable outlet top/bottom. Connection adaptor Connection adaptor For bar systems with 60 mm centre-to-centre spacing. Show Products Connection adaptor Connection adaptor expansion set for 4-pole configuration Single-pole extra set to complement the 3-pole connection adaptor (SV 9342.310/9342.320) for 4-pole configurations. Show Products