Auxiliary switch, 1 NO+1 NC, accessories for main and emergency switching-off 3LD2 switch floor mounting, installation in distribution boards, molded-plastic encapsulation and for molded case switch 3LD5 UL floor mounting The 3LD main and emergency switching-off switch as a maintenance switch for safe disconnection of loads in a wide variety of environments. There are numerous possible applications for the 3LD disconnector units. After disconnects from the grid, they ensure safe activation of all of the electrical equipment, thus switch, for example, to three-phase motors, but also air-conditioning and ventilation systems. 3LD have proven themselves in many fields, particularly in processing machines in mechanical and conveyor system engineering, and in the chemical sector and food and beverage industries. The Siemens 3LD main switches and emergency off switches are characterized primarily by: 1. Modular design, fast and easy mounting of auxiliary switches, N-PE terminal, or 4th pole. 2. Versatile and global applications possible due to international IEC, UL and marine approvals. 3. Degree of protection IP65 with encapsulated enclosure for outdoor applications. 4. Can be used for DC applications. 5. Types of mounting: Front mounting, mounting panel, DIN rail. 6. Optimum disconnection of 16 A of 250 A from the power supply by locking capability of the rotary operating mechanism.