Akshar Sales And Automation

Lever type Limit Switch
Introduction: 
  Lever Limit Switch is used for heavy duty E.O.T Cranes,. Wagon shunting devices etc., to prevent over travelling or over. traversing on power and control circuit up to 500 volts A.C. 50Hz and 10amps and 40amps current rating.

Function:
  The Lever Limit Switch operates when its lever reaches its. pre-determined posi��on and the lever is moved over a. projec��ng member fixed on the Girder.The Limit switch Contacts are automa��cally reset when the . . .. …. ever returns to zero posi��on due to spring ac��on.

Rotary Gear type Limit Switch is basically consists of HeavyDuty worm gear drive. The worm gear unit is built in a casthousing fi􀆩ed on main body of Limit Switch. The cam sha􀅌which extends from behind the gear in to housing.Accommodates the cams adjustable actuators which arefi􀆩ed on the cams. These actuators strikes the contractfinger of respec􀆟ve contacts.

Application:

The new range of limit switches has been designed and manufactured according to safety standard are suitable for use on reversing drives such as hoists, cranes, winches and rolling mills.

 

Design:

The driving motion is transmitted by worm gear. All gears and hubs are made of low wear thermoplastic. The rotational movements are transmitted to switches by adjustable cams.

 

Driving cams:

Each lever has a single micro metric resister screw. This screw exclusively works on its own combined lever, excluding any mechanical contact with any other next to it. The regulation is easily made by use of screwdriver on a register screw. The special friction system assures a rapid and precise adjustment.

 

Technical Data:

• Body Material : Black Nylon
• Cover Material Yellow : Impact proof thermoplastic
• Protection Degree : IP-55
• Mounting Position : Any
• Gear Ratios : 1:12.5, 1:25, 1:50, 1:100, 1:200 & 1:400
• Drive : Worm Drive
• Cable Entries : 2, 3/4" Conduit
• Maximum Rotation Speed : 1200 rpm
• Contact Material : Double break silver cadmium
• Wire Connection : Screw terminal
• Rated Voltage Insulation : 500 V.A.C
• Thermal Test Current : 10 Amps