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On Load Switch Fuse Changeover — Buy On Load Switch Fuse Changeover, Price , Photo On Load Switch Fuse Changeover, from Crystal Electrical, Co. Knife switches on Allbiz India
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  • BrandFuse
Our range of On Load Switch Fuse Changeover (Open Execution) are used at places where continuity of supply is essential that is maintained by switching to an alternate source of supply from main supply and vice versa. Fitted with HRC fuses in load circuit, our range of fuse changeover meets the requirement of IEC: 947-3, IEC: 664 and IS: 13947 Part (I&III) - 1993 quality standards.

These are manually operated and are capable of making, carrying & breaking currents under normal circuit conditions, which may include operating under over load conditions and also carrying currents under specified abnormal circuit conditions, such as short circuit for a specified time.

Our compact designed 4 pole switch fuse finds application in low voltage distribution circuits and motor circuits.


  • Unique modular construction comprising On Load Changeover Switch with HRC fuses in load circuit
  • Four breaks per pole resulting in faster quenching of arc.
  • While breaking the circuit, guaranteed sufficient air sectioning clearance.
  • Protection against over currents & short circuit fault of high rupturing capacity upto 80 KA.
  • Compact & Standardized sizes for range 63A-800 A ideal for switch board manufacturers.
  • Strong endurance & resistance to heat (Tropicalised)
  • Flag indicator for three stable positions (I-0-II) & possible switching from one source to the other, on load, thereby fulfilling the role of switching device with interlocking protection for two modes of supply, one from electricity board & other from standby source i.e. generator and providing back up.
  • Phase barriers provided between each phase terminal and HRC fuses.
  • Large terminal area suitable for aluminum/copper busbar and cables.
  • Auxiliary contacts up to 2 NO & 2NCforsignalisation& interlocking.
  • The moulded body's raw material is glass fiber reinforced polyester SMC which has high mechanical & dielectric strength.
  • Strong & ergonomic operating handle with door interlock & padlock facility.
  • Utilization category-AC 23 A.


Range & Frame Size

Four Pole 415 V AC 50 Hz.

  • Size 1 ............63A, 125A
  • Size 2 ............200A, 250A, 320A.
  • Size 3 ............400A, 630A


  • Open Execution
  • In thick Steel Sheet Enclosure.
  • On Load Switch Fuse Changeover
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