Main Control and Emergency-Stop Switches

3LD Switch Disconnectors are used for switching main and auxiliary circuits, but also for switching induction motors and other loads during maintenance and repair work.  They are manually operated switch disconnectors according to IEC 60947-3/ EN 60947-3 (VDE 0660 Part 107) and comply with the conditions for switch disconnectors. 

3LD Switch Disconnectors can be used as either a ON-OFF switch, EMERGENCY-STOP switch or a Main control switch according to EN 60204-1

The switches are available with either a door-coupling rotary operating mechanism (3LD2013, 3LD5514, 3LD2814) or contained  in a moulded-plastic enclosure (3LD2064, 3LD2565, 3LD2766).  EN 60204-1 (VDE 0113 Part 1), main control switches are called "disconnector units", while EMERGENCY-STOP switches are termed "devices for emergency shutdown". Maintenance personnel can protect themselves against unauthorized startup with padlocks (up to three can be fitted). The 3LD switches can be used in any mounting position. The 3LD switches for 16 to 125 A are approved according to UL508 and can be used as "manual motor controllers" and "motor disconnects". 

Also available to order separately is a 4^th contact element (3LD9280-0C) that can be used for a neutral conductor.