Compact mechanism

Features :

  • High performance reliability.
  • Trip free mechanism suitable for repeated auto reclosing duty.
  • Totally enclosed construction for spring charging motor.
  • Also used in LBS for motorized charging.
  • Built in manual charging handle for effortless manual spring charging.
  • Superior mechanical endurance values, maintenance required only after 10,000 operations.

Dimension Details:

  • Height : 335 mm
  • Width : 320 mm
  • Depth : 190 mm
  • Mounting pitch : Height - 150 mm, Width - 97 mm
  • Weight - ~15 Kg

The Operating Mechanism consists of:

  • A spring charging unit which can be charged manually or electrically by a geared motor.
  • Mechanical indicator showing spring charged/discharged condition.
  • Indicator for open/close position of the circuit breaker.
  • Closing/tripping solenoids for performing closing/opening operation of the circuit breaker electrically.
  • The NC contact of the cut-off switch is opened whenever the spring gets charged and interrupting the motor circuit.
  • Over charging protection is enabled, i.e., If the cut-off gets failure, there is no issue to Motor.
  • The closing and opening operations can be carried out by means of the energy stored in the operating mechanism. Double Spiral spring is used to carry out the closing and opening operation of the breaker

Technical specifications:

Nominal system voltage 11KV
Rated Current 630 / 1250 / 1600 A
Mechanism Type     Motor wound spring operated.
Operating method        Motor / Manual.
Charging time      10 sec(max)
Manual charging          1. Pull the handle up & down for 6-7 times. (or)
2. 30 Rotation from the initial charging position.
Motor operating voltage 110/220v AC/DC
Charging motor power   80-150W
Mechanism output travel 12-14mm
Trip /Close coil Rating 24 / 30 / 110 / 220 V DC - 220W