Outdoor ht Switchgear

132 KV, 66 KV, 33 KV, 11 KV Isolators with & without Earth Switch up to 2000 Amp.

We supply and install the ULTIMA range of isolators and disconnectors all voltages up to 132kV to all State Electricity Board and private sectors. Ultima also manufactures cost effective and respected disconnectors in all other configurations including Horizontal centre break, double break centre orating blade and banging type.

1. Double Break Central Rotating
2. Central Break
3. Title Type - (a) Two Post (b) Three Post


The disconnectors are in effect safety devices and severe for mechanical isolation of systems. In the open position they provide a visible isolation distance. They are able to open or close a circuit if either a negligible current is switched or if no significant change occurs in the voltage between the terminal of the poles. The disconnectors can be applied in many of the usual switchyard layouts of high voltage installation. They are designed for horizontal outdoor application. Under special conditions vertical installation is possible. For earthing and short circulation of switched out portion of the installation, the incorporation of one or two earthling switches are possible on each disconnector.

Salient Features

  • The moving contact blade is an Aluminum /copper tube with special copper profile with a bimetallic strip fitted with silver plated copper contacts.
  • The stationary contacts are silver plated copper, spring loaded to maintain constant contact pressure
  • The electrical contact system is easily and quickly replaced should it be damaged due to a fault current or damaging event
  • Range of Terminal connectors to suit current requirements.
  • Robust design and construction
  • Encapsulation of rotary pedestals and heads
  • No significant changes of contact resistance over many years of services
  • Constant contact pressure
  • Stable rotary pedestals ensure no insulator deflection even with high static loads.

Testing And Quality

Successful type tests on the disconnectors have been carried out in our own and independent test laboratories in accordance with the latest ISS/IEC and DIN/VDE standards. Quality control of individual parts during manufactures ensure constant excellent product quality. Each equipment is subjected to all the routine tests also as per relevant standard at our before dispatch.

33 KV & 11 KV Horn Gap Fuse with Insulator up to 630 Amp.

Horn gap fuse is a protective device which is used to protect the equipment from higher voltage. Horn gap fuse is an element as compared to a load line when high current is drawn in line in which the wire melts to protect the line.

11 KV & 22 KV DO Fuse with Solid Core Insulator up to 200 Amp.

The drop out fuses simplest and most effective safety device for small distribution transformer. The drop out fuse open the circuit and serve the mechanical isolation of system in case of flow of fault current. The drop out fuses are designed for vertical installation. They are practically maintenance free as they required duly replacement of fuse element.

11 KV TPMO / GOAB Switch / Line Sectionalizer (Horizontal / Vertical Type) on load break switch up to 630 Amp. 25 KVA for 3 Sec / 25 KVA / 16 KVA for 1 Sec and 11 KV Switch Fuse Unit combined with AB Switch / DO Fuse / LA.

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