Door coupling rotary drive, black operating knob, foolproof, 66x66 mm, lockable in position 0, for four-hole front mounting, with coupling part, with shaft 300 mm long, 6x6 mm. Accessories for load disconnectors 3LD3 Main and EMERGENCY STOP switches SENTRON 3LD3 for the safe switching off of loads in many areas, e.g. for three-phase motors, air conditioning and ventilation systems, in control or switch cabinets, especially for small machines such as saws, compressors, pumps, concrete mixers, drilling machines, milling machines or woodworking machines. Modular design, quick and easy installation of auxiliary switches, N-PE terminal or 4th pole. Optimum mains isolation from 16 A to 63 A thanks to the lockability of the rotary drive. Versatile thanks to international approvals. One mechanical size for five electrical sizes.The 3LD main and EMERGENCY STOP switches are available in a wide range of versions for front mounting, mounting plate, top hat rail or distribution board installation, optionally with direct or door-coupling rotary drive. Versions for direct current applications are also available for 3LD2.3LD main and EMERGENCY STOP switches - Consistent safety for users and systems.