pull cord switch

pull cord switches are used as belt conveyors' emergency stop system.

Pull cord switches are used as belt conveyors’ emergency stop. Steel rope is fastened to a fixed ring, the other side of steel rope is fixed on switch arm. The distance between swtich and fixed point normally not more than 30 meters. Distance between two switches normally less than 60 meters. Pull strength makes the switch arm move to the alarm location, touch the sensitive switch and shut down systems locked. Pull cord switches are two-way touch switch, conveyor ends or middle of the conveyor are all available to be installed.  

Operating Enviroment

temperature range: -25~ +45ambient humidity: less than 90%sea level elevation:≤2000mswitch can work under 10~50Hz, vibration amplitude 0.75mm(10g)

Main Specification

contact rating: 2 (SPDT) switches 15A125, 250 or 480VAC; 2A600VAC,0.5A125VAC, 0.25A250VACangle lock: 20°, wire opening; two 3/4”-14NPT holesouter covering: dust proof, protection level:NEMA4(IP65)outer dimension: LXWXH(mm)191x135x109, pull rod length: 203mm.space between switch: recommend 48 m;(less than 60m),there is a support ring every three meters.weight: 3.8kgoperation strength: 5~7kg

Application

     1.  belt conveyor

     2. belt type bucket elevator

     3. packaging production line

     4. apron feeder conveyor

     5. stacker system, cranes, excavator

     6. ship loading,unloading system

     7. The switch safety shutdown system meet the OSHA requirement

pull cord switch