Autometers Alliance Ltd is an ISO9001, ISO14001, ISO45001 certified Indian company manufacturing high technology products to international standards.

Contact Info

+91 120 6770100
support@autometers.com

C-63, Sector-57, Noida-201307, UP, India

VACUUM CIRCUIT BREAKER

VACUUM CIRCUIT BREAKER

Sophisticated and advanced Vacuum Circuit Breaker

Compliant Standards: IEC 60077

  • Single pole AC circuit breaker.
  • Equipped with single bottle vacuum interrupter.
  • Pneumatic closing and holding, opening through spring induced force.
  • Earthing switch can be engaged directly on the breaker.
  • Constructed for roof mounting.
  • Requires less space for installation.
  • Requires minimum maintenance.
  • Provides protection against fault currents.
  • Disconnect the traction vehicle from the overhead catenary wire.
VACUUM CIRCUIT BREAKER

Technical Specifications

Maximum rated voltage 30 kV
Nominal line supply voltage 25 kV
Rated power frequency withstand voltage 75 kV rms
Rated impulse withstand voltage 175 kV rms
Conventional thermal current in free air 1000 A rms
Rated operational frequency 50 Hz
Short circuit rupturing capacity 16 kA rms (440 MVA)
Rated short circuit making current 40 kA peak
Short time current capacity 16 kA rms (3 sec)
Opening time ≤ 60 ms
Closing time < 100 ms
Control voltage 110 V DC
Auxiliary contacts (Type & No.) 8 Nos. (Fish Bone Type) configurable contacts for external circuit & 1 NO for internal use
Input air supply pressure 5 to 10 kg/cm2
Approx. weight 150 kgs

 

Applications

The VCBA type circuit breaker is used as a main line circuit breaker:

  • Used to close and open the power circuit of the vehicle from the overhead catenary.
  • To interrupt the power circuit under overload, short circuit or any other defined conditions.

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