GRAVITY LIMIT SWITCH

GRAVITY LIMIT SWITCH

"Suni Cranes Controls" gravity limit switch is used to prevent over hoisting.  Limit switch normally remains 'On' due to weight connected to the Lever when the snatchblock reaches the highest position theweight pulling the lever down is moved upon thesnatch block.   Lever is therefore released and the two contracts cut off two phase of the motor thereby stopping the hoist motion the contacts are rated 40 amps.  At 415 V.A.C. 50 Hz continuous the limit switch is of 'series type' the max. permissible frequency of operation is 720/Hour.  Limit switch is available with 2NC or 4NC Contacts.