Super Engineering Works

On Load Changeover Switches

On Load Changeover Switches
Business Type Manufacturer, Exporter, Supplier

Preferred Buyer From

Location India, Kuwait

Made using premium material, the On Load Changeover Switches, which we offer, is manufactured under the guidance of Quality Experts. We are amidst the dependable Manufacturers and Exporters of the On Load Changeover Switches from Delhi. We provide these On Load Changeover Switches at economical rates. We are known as reputed on load changeover switches manufacturers.

They Operate as changeover, giving three stable position (I, 0 & II) and help in Change over from one supply source to another.

General Characteristic
The ideal conception in Quick Cubic Change over Switches incorporate the following Advantages :

  • Three stable position (I, O &II) and possible changeover from one to the other while functioning.


  • Circuits I and II open (Neutral Position)
  • Circuit close and circuit II open (Transformer supply "On"and generator supply "Off")
  • Circuit I open and circuit II close generator supply "On"and transformer supply "Off"

Contact System

  • Safely of division : Clearly apparent operation.
  • High thermal and dynamic strength to withstand rated fused short circuit current level 80 KA rms.
  • Is a switching control of two independent circuits (Circuit closing / CircuitII opening and vice versa).
  • Is rated for AC23 A utilization category

Changeover Switches are manufactured from Surdhi moulded case on load changeover switches with single handel arrangement. The switch frames are side by side for 63A-630A. The whole range is manually operated.


  • IS 13947 - Parts 3
  • IEC 947 - 3, IEC 664

Auxiliary Contact : The Auxiliary contacts are of "CO" type, they provide positions signalization or pre-break control.


  • The Surdhi Quick Cubi... changeover switches are especially designed for control and disconnection of all kinds of circuits distribution feeders/motors loads.
  • By mean of manual operation, changeover performs circuit switching and are mainly used as a switching / control of two independent circuit (Circuit closing / circuit II opening and vice versa).


  • Compact size, Quick made & Quick Break mechanism.
  • High electrical & mechanical life.
  • Enclosed housing to avoid dust ingress.
  • Load and Line reversibility."
  • Provision of Phase separators, add-on auxiliary-switch.
  • Door Interlock and padlock facility.
  • Silver Plated Current carirying Parts.
  • Bolt Holders installed on terminals for Easy Cables / Bus Part Termination.
  • Flexibility for termination of supply.
  • Compaq standardized size Range 63A- 630A as compared to leading indigenous makes. So, it saves panel space of cost.

  • Additional Images

  • On Load Changeover Switches

  • On Load Changeover Switches

  • On Load Changeover Switches

  • On Load Changeover Switches

  • On Load Changeover Switches


Rating 63A 80A 100A 125A 160A 200A 250A 320A 400A 630A
Mechanical No. of Operations 10000 10000 10000 8000 8000 8000 8000 5000 5000 5000
Electrical No. of Operations 2500 2500 2500 1000 1000 1000 1000 1000 1000 1000
Operating Force (Nm) 3.5 3.5 3.5 9.5 9.5 9.5 11 11 17 17


Min. Cu Cable / Bus Bar Size (mm2) 16 25 40 50 70 95 120 185 30x5x2 30x5x240x5x2
25 40 60 70 110 150 185 240 32x8x2 40x5x2

Technical Specifications

Size Onload Change Over Switch Cat. No.
"00" 63A Without Enclosure SDV-OLC-63
"00" 80A Without Enclosure SDV-OLC-80
"00" 100A Without Enclosure SDV-OLC-100
"00" 63A With Enclosure SDV-OLC-63 EN
"00" 80A With Enclosure SDV-OLC-80 EN
"00" 100A With Enclosure SDV-OLC-100 EN
"01" 100A Without Enclosure SDV-OLC-100
"01" 125A Without Enclosure SDV-OLC-125
"01" 160A Without Enclosure SDV-OLC-160
"01" 200A Without Enclosure SDV-OLC-200
"01" 100A With Enclosure SDV-OLC-100 EN
"01" 125A With Enclosure SDV-OLC-125 EN
"01" 160A With Enclosure SDV-OLC-160 EN
"01" 200A With Enclosure SDV-OLC-200 EN

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