The break - through of the Vacuum switching principle was essentially due to the development of an Interrupter that made it possible to use the vacuum circuit breaker for all the switching functions in system operation. It was the result of research on the arc quenching effects, on the most suitable material to be used and design and construction. The advantages offered by the vacuum switching principle make it the most economically efficient at present and the breaker superior to other designs:

• Constant dielectric.
• Constant contact resistance.
• High total current switching.
• High reliability.

Salient Features:

• Fully inter locked for high safety to the personals.
• Reliable operation.
• Rigid design.
• Compact.
• Safe and easy horizontal isolation and horizontal draw-out within the breaker chamber.
• Earthed metal partitions and shutters.
• Guaranteed voltage withstand.
• Access to cable from the rear of the panel.
• Integral earth switch.
• Uncomplicated and maintenance free Mechanism -AB100.


Panel housing

Panel housing for ABSVI-12 Circuit Breaker bolted construction made out of 3 mm CRCA sheets. The design is made to meet all the alternatives to suit customer applications.

This is an indoor metal clad design with air-insulated bus bars. The panel has compartmentalized with following to prevent secondary flash over in the event of power arc in any of the other departments.

• Breaker compartment.
• Instrument compartment.
• Busbar compartment.
• CT and Cable compartment.

Circuit Breaker

Circuit breaker consists of motor or manual charged spring operating mechanism with 3 individual Vacuum interrupters actuated by common drive shaft arrangement.

The breaker has very high mechanical and electrical operating strengths.

Due to the simplicity of design the VCB is totally maintenance free.

Breakers are ideally suitable for Arc furnace duties in addition to the feeder transformer capacitor bank etc.

Spring operated Mechanism AB100

AB100 Mechanism used with vacuum breaker is of robust and reliable simple design. The linkages are easily accessible incase maintenance is required. Stored energy by the spring is used for closing and tripping operations. Spare charge is also possible for auto-re closure applications.

All products have been developed only with, in-house research, and no collaboration has been sought for, except for the design of Load Break Switches. Today it is acknowledged that the Quality and Standard of the products manufactured by A. Bond Strands compete stiff, with similar products manufactured elsewhere in the world.

The group markets its products by direct sale to Original equipment manufacturers, Service providers and Equipment users all over India. The group also undertakes projects on turnkey basis, on site locations throughout India.

We also export our products to Australia and U.S.A. the Middle East, Bangladesh, and South East Asia.

Also, we have developed close partnering business relationships with multinational giants like M/s.Siemens, ABB, Alstom, GE, Areva and Prime Government organization like of BHEL, NLC etc who are all recognized names in the Industry.

Our varied range of products throws light on the considerable degree of Technology involved and the appreciable level of Engineering capabilities within our group.