Air break drum controllers are manufactured in accordance with customer specification. They are suitable for controlling A.C & D.C motors used in E.O.T cranes, haulages in mines, winches, steel works. Mainly three sizes are manufactured, 40 Amps, 60 Amps, 150 Amps. Provided with stator reversing contacts.
A star wheel and roller arm give definite step location. The crank type-operating handle is provided with off position trigger to prevent accidental starting or unwanted reversing. Operating handle is provided with deadman handle if required by the client Auxiliary contacts are provided for Electrical inter locking.

Arc Shields:
Arc shields are provided on both D.C and A.C. type controllers.
Cable Entry:
Standard cable entry is through a base plate, other type of fittings, can also be provided as per clients desire.
Construction:
Robust construction, top & bottom made of M.S. Plate. The fingertips are made of Hard drawn copper, grinding finish. Removable front cover made of sheet steel.
Drum:
The contact segments are of Hard drawn Electrolytic copper, turned after assembly to maintain concentricity. The contact assembly of controllers fixed on to insulated M.S. Shaft.

 


Concepts in switching technology with miniaturization & sophistication for used in automatic control circuit like master control switch where mechanical positions is translated into electrical signals for controlling remote starters, contactors and work in highly contaminated atmosphere and extremely high shock and vibrating condition. Every Limit Switch goes under rigorous testing before it is supplied. A wide variety to afford a high degree of versatility is available. The range includes:-

• Grab differential limit switch.
  
• Spindle type rotary geared limit switch.
  
• Heavy duty lever type limit switch.
  
• Roller lever.
  
• Counter weight.
  
• Forked lever.
  
• V-shaped lever.
  
• Double Roller lever
  
• Foot Pedal
  
• Heavy duty cam operated Rotary Geared Limit Switch.
  
• Push rod limit switch.
  
• Heavy duty pull cord switch.
  
• Explosion proof limit switch for Hazardous atmosphere.
  
• Heavy duty snap action limit switch.
  

Technical Specification & Features

• Utilisation category: AC 11 & DC 11 as per IEC IS 6875.
  
• Thermal current 10 amp to 40 amps.
  
• Insulation voltage 600 V AC & 240 DC.
  
• Operating temperature – 20ºC to 110ºC.
  
• Mechanical life – 20 million cycle.
  
• Contact life: 10 million cycles.
  
• Terminal capacity: 2.5 mm2.
  
• Operating Torques: 6.804 to 14.968 KLS depending on switch size and cam selected.
  
• Enclosure: IP 67
  
• Characteristics
  
• Oil tight, Water tight & Dust proof.
  
• Time tested, extremely reliable design
  

 

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