AUTOMATIC SWITCH Russian patent published in 1997 - IPC

FIELD: low voltage electric switches. SUBSTANCE: forces which lock mechanisms are divided into low and high ones. Unlock units are used for unlocking with low force. Another locking is performed by traverse with spring-loaded flange and it is unlocked by means of contact pressure spring. Moving contact holder has bunch and through slot and is located at end of contact pressure spring. Unlocking lever also has bunch and two coaxial clots and is mounted on moving contact holder. Traverse is designed as flat fork which side pins run through slots of unlocking lever and moving contact holder while its central pin is spring- loaded to unlocking lever so that one side pin loosely engages with contact pressure spring and another one engages to spring-loaded flange. EFFECT: increased current range, increased field of application, increased reliability of switch, simplified design, decreased cost. 4 dwg