Limit Switch

APPLICATION : Used in control circuits of cranes, hoists, winches and other drive mechanism where bi-directional travel of the mechanism is to be sensed at certain predetermined positions. The shaft extension of the rotary geared limit switch is coupled with the shaft of the hoist/ winch rope drum. The gear ratio of the switch is selected in such a way that the total revolutions of the rope drum for winding/unwinding the full working length of hoist rope, turns the cam shaft of the limit switch by less than 360 degree.SPECIAL FEATURES :

• SINGLE Break contact with high quality Silver cadmium oxide contact tips having arc-retarding and anti-welding properties.
• Provided with specially treated oil resistance rubber gaskets at all the joints in the switch to make it completely dust proof.
• Universal design for both AC DC application.
• Contact carrying fingers are of high grade phenolic fibrous molding material having electrical and mechanical properties.
• Resistance to extreme shock and vibratory conditions.
• Ease of maintenance, reliability of performance, ensuring long life.

TECHNICAL FEATURES :

• Operating mechanism = Coupled with rotating shaft of rope drum /gear box /motor.
• No. of contacts = 2/4
• Gear ratio = 1:48.
• Rated voltages = Up to 500V AC.
• Permissible cont. current = 10 AMPs
• Breaking current = 500V AC-5A.
• Contact breaks = SINGLE breaks
• Contact tips = Silver cadmium oxide
• Enclosure = IP-55.
• Body = Cast iron body with Cast Aluminum cover
• Electrical life = 2 lacks operations
• Mechanical life = 5 lacks operations
• Ambient Temperature = 55 degree centigrade
• Permissible Switching = 600 operations per hour.

APPLICATION :
KAKKU LIMIT SWITCH SERIES KLS-HD are used to provide electrical on/off signals for the automatic control circuits of heavy machinery, EOT Cranes, Conveyors, Transfer Cars, Elevators, Steel Mills, Auxiliary handling equipment's for slowing down / stopping the drive at the end the limits of its travel for safety purpose or initiating a control/interlocking sequence between various device.

SPECIAL FEATURES :

• Double Brake contact with high quality Silver Alloy contacts tips.
• Provided with specially treated oil resistance rubber gaskets at all the joints in the switch to make it completely dust proof.
• Universal design for both AC DC application.
• Cams and contact block are high grade phenolic fibrous molding material having excellent electrical and mechanical properties.
• Resist extreme shock and vibratory conditions.
• Ease of maintenance, reliability of performance, flexible contact, long life.

TECHNICAL FEATURES:

• Operating mechanism : Roller lever
• No. of contacts : 4
• Action : Self return (Spring return)
• No of operating Position = 1-0-1

Contact ratings :-

• Rated voltages : Up to 500V AC or DC
• Permissible cont. current : 10AMP
• Breaking current : At 110 v DC -2.5 AMP, At 220v DC -1.5AMP, At 440v DC -0.5AMP ,At 500v AC -10AMP.
• Contact breaks : Double breaks
• Contact tips : Silver cadmium oxide
• Electrical life : 1.5 millions operations
• Enclosure : IP55
• Body : Cast Iron / Cast Al
• Mechanical life : 15 millions operation
• Ambient Temp. : 55 degree centigrade
• Permissible switching : 600 Operations per hour

APPLICATION :
KAKKU LIMIT SWITCH SERIES KLS-HD are used to provide electrical on/off signals for the automatic control circuits of heavy machinery, EOT Cranes, Conveyors, Transfer Cars, Elevators, Steel Mills, Auxiliary handling equipment's for slowing down / stopping the drive at the end the limits of its travel for safety purpose or initiating a control/interlocking sequence between various device.

SPECIAL FEATURES :

• Double Brake contact with high quality Silver Alloy contacts tips.
• Provided with specially treated oil resistance rubber gaskets at all the joints in the switch to make it completely dust proof.
• Universal design for both AC DC application.
• Cams and contact block are high grade phenolic fibrous molding material having excellent electrical and mechanical properties
• Resist extreme shock and vibratory conditions.
• Ease of maintenance,reliability of performance, flexible contact,long life.

TECHNICAL FEATURES:

• Operating mechanism : Double Roller lever
• No. of contacts : 2/4
• Action : Stay put
• No of operating Position = 0-1

Contact ratings :-

• Rated voltages : Up to 500V AC or DC
• Permissible cont. current : 10AMP
• Breaking current : At 110 v DC -2.5 AMP, At 220v DC -1.5AMP, At 440v DC -0.5AMP ,At 500v AC -10AMP.
• Contact breaks : Double breaks
• Contact tips : Silver cadmium oxide
• Electrical life : 1.5 millions operations
• Enclosure : IP55
• Body : Cast Iron / Cast Al
• Mechanical life : 15 millions operation
• Ambient Temp. : 55 degree centigrade
• Permissible switching : 600 Operations per hour

APPLICATION :

Used in control circuits of cranes, hoists, winches and other drive mechanism where bi-directional travel of the mechanism is to be sensed at certain predetermined positions. The shaft extension of the rotary geared limit switch is coupled with the shaft of the hoist/ winch rope drum. The gear ratio of the switch is selected in such a way that the total revolutions of the rope drum for winding/unwinding the full working length of hoist rope, turns the cam shaft of the limit switch by less than 360 degree.

SPECIAL FEATURES :

• Double Break contacts with high quality Silver cadmium oxide contact tips having arc-retarding and anti-welding properties.
• Provided with specially treated oil resistance rubber gaskets at all the joints in the switch to make it completely dust proof.
• Universal design for both AC DC application.
• Contact carrying fingers are of high grade phenolic fibrous molding material having electrical and mechanical properties.
• Resistance to extreme shock and vibratory conditions.
• Ease of maintenance, reliability of performance, ensuring long life.

TECHNICAL FEATURES:

• Operating mechanism = Spindle of the switch is coupled with rotating shaft of rope drum /gear box /motor
• No. of contacts = 2
• Rated voltages = Up to 500V AC or DC
• Permissible cont. current = 10 AMPs
• Breaking current = 1. 10V DC-0.5A
  2. 220V DC-0.3A
  3. 440V DC-0.1A
  4. 500V AC-10A
• Contact breaks = Double breaks
• Contact tips = Silver cadmium oxide
• Enclosure = IP-55 (IP-65 can be provide on request)
• Body = Cast iron body with Cast Aluminum cover
• Electrical life = 2 lacks operations
• Mechanical life = 5 lacks operations
• Ambient Temperature = 55 degree centigrade
• Permissible Switching = 600 operations per hour

GEAR RATIO :

• 1:1, 1:10, 1:20, 1:30, 1:5, 1:50, 1:75

APPLICATION :
KAKKU LIMIT SWITCH SERIES KLS-HD are used to provide electrical on/off signals for over travel of crane hook for safety purposes.

SPECIAL FEATURES :

• Double Brake contact with high quality Silver Alloy contacts tips.
• Provided with specially treated oil resistance rubber gaskets at all the joints in the switch to make it completely dust proof.
• Universal design for both AC DC application.
• Cams and contact block are high grade phenolic fibrous molding material having excellent electrical and mechanical properties
• Resist extreme shock and vibratory conditions.
• Ease of maintenance, reliability of performance, flexible contact, long life.

TECHNICAL FEATURES:

• Operating mechanism : Counter Weight
• No. of contacts : 2
• Action : Self return by snatch block weight
• No of operating Position = 0 - 1

Contact ratings :-

• Rated voltages : Up to 500V AC or DC
• Permissible cont. current : 10AMP
• Breaking current : At 110 v DC -2.5 AMP, At 220v DC -1.5AMP, At 440v DC -0.5AMP ,At 500v AC -10AMP.
• Contact breaks : Double breaks
• Contact tips : Silver cadmium oxide
• Electrical life : 1.5 millions operations
• Enclosure : IP55
• Body : Cast Iron / Cast Al
• Mechanical life : 15 millions operation
• Ambient Temp. : 55 degree centigrade
• Permissible switching : 600 Operations per hour.