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66 KV, SF6 CIRCUIT BREAKER ONE  Make : Siemens or Equivalent 2. 11 KV EXPANSION TYPE CIRCUIT BREAKER (600 Amp) FIVE  Type H 623 b 1010/400 Amp  With hand drive with auxiliary switch, 5 closed contacts, 5 normally open contacts and 1 momentary closing contact with 1 open circuit release (f) for 110 volts DC.  Rupturing capacity 200 MVA  Operating Voltage 11 KV  Rated current 400 Amps.  With filling “expensing† Rated frequency: 50 C/s.  Make : Siemens or Equivalent