Description: Lever Limit Switch are used for heavy duty E.O.T. cranes and wagon shunting devices to prevent over traveling or over traversing on power and control circuit up to 500 volts A.C. 50 cycles / second and 40 amps current rating. These switches normally remains closed and cut off power to stop the motor of the particulars motion. It operates when its lever reaches its pre-determined position and the lever is moved over a projecting member fixed on the girder. The switch contacts are automatically reset when the lever returns to zero position due to spring action. The switch is made in IP-41 as well as in IP-54 enclosure. The IP 41 enclosure the housing is made from suitably reinforced sheet steel where as in case of IP-54; the cover is of cast aluminum. The contacts have a maximum continuous current capacity of 40 A AC. The contact tips are made of high-grade silver cadmium oxide alloy. When used for series operation up to 40 A maximum, the contacts are suitable for 720 operations per hour and in case of shunt operation for control circuit, the contacts are suitable for 1200 operations per hour. The body of the contacts is made of high-grade melamine, which is specifically suited for heavy-duty operation. The material is non-tracking and is capable of withstanding heavy arcing.
