Busbar systems Ri4Power 185 mm NH slimline switch-disconnectors, 185 mm Size 00 to 3, for 60, 100 and/or 185 mm bar centre distance. NH slimline switch-disconnectors, 185 mm NH slimline switch-disconnector with electronic fuse monitoring 3-pole, for bar systems with 185 mm centre-to-centre spacing. Show Products NH slimline switch-disconnectors, 185 mm NH slimline switch-disconnector 3-pole, for bar systems with 185 mm centre-to-centre spacing. Show Products