Limit Switch

Product Details:

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.

Product Details:

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

Product Details:

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

Product Details:

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

Product Details:

The LSR way switch operates the control change-over contacts of a motor of a moving equipment when the moving equiment, operating with a load, actuates the 300mm rads of the Limit Switch, the NO/NC contact elements change-over to control the equipment's movement.

Product Details:

Worm Drive Limit Switch FGLS are suitable for use on reversing drives, such as Hoists, Cranes, Winches, Rolling Mills, Theater Curtains, Coke Oven etc. The driving motion is transmitted by worm gear. All gears and hubs are made of low wear thermoplastic material. The rotational movements are transmitted to switches by adjustable cams. Limit Switch LSR Cross Rotary for travel Motion Operates the control change over the contacts of a motor of a moving equipment which when operates with a load a actuates the 300mm rods of the Limit Switch and this in turn operates the NO/NC change-over contact elements.

Product Details:

Operates the control change-over the contacts of a motor of a moving equipment when a cam moving with loads actuates the lever / (or the weight rests on a surface) of the Limit Switch. This turns the cam on a square shaft and operates the NO / NC change over the contact elements.

Product Details:

Weight Operated Limit Switches are used on control / power circuit of reversing drives so as to limit their rotation / movement within a predetermined position. Operation:

When the snatch block of the crane reaches its top position the snatch block pushes a plate which is hanging from one end of the lever of the limit switch. Due to the weight placed on the other end of the lever this lever is pushed up. When the lever is pushed up the shaft to which this lever is connected rotates there by rotating the cams which eventually open the contacts and disconnect the motor. The electronic limit switch contacts are automatically reset when the lever returns to zero position due to gravitational force.

Product Details:

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.

Product Details:

General Features:

• No. of contact = 2 (1No + 1NC)
• Nature of lever assembly = Straight roller lever
• Action = Spring Return
• Nature Of Lever Assembly = Straight Roller Lever
• Ambient Temperature = 55°c
• Mounting Arrangement = Surface Mounting
• Operating mechanism = Roller lever
• Action = Self / Spring return
• Housing = cast aluminium
• Actuating force = Not greater than 6Kg.f
• Speed of striker = .3 To 30 Mtrs per min
• Enclosure catagory = As per IP-54 of IS:2147-1962
• Cable Entry = 1no. of 1/2 threaded size 2.5mm²
• Available in dust Proof/oil tight enclosures.
• Available in various design of operating levers,such as roller lever, counter weight operated for lever, "V" shaped roller levers, foot paddle, push rod, adjustable roller lever etc.Also with liberal over travel for various applications.
• Rotary geared limit switches are available in different gear ratios with 2 to 24 contacts with proven performance in heavy duty applications in the metallurgical plants
• Cost effective, proven and tested design, ensuring highest reliability.
• Conforming to relevant IPSS.