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MEDIUM VOLTAGE AIR CIRCUIT BREAKERS
2400, 4160, 7200, 13800 Volts
General Electric

In the 1940’s and early ‘50s, GENERAL ELECTRIC manufactured its first line of medium voltage circuit breakers and associated switchgear. The models produced were the:  - AM 10 10
  - AM 10 15
  - AM 10 25
  - AM 5 50       600 and 1200 amp, 4160 volt
  - AM 5 150     600 and 1200 amp, 4160 volt
  - AM 5 250     1200 and 2000 amp, 4160 volt
  - AM 7.5 250 1200 and 2000 amp, 4160 volt
  - AM 7.5 500 1200 and 2000 amp, 7200 volt
  - AM 15 250 1200 and 2000 amp, 7200 volt
  - AM 15 500 1200 and 2000 amp, 14400 volt

These circuit breakers were developed utilizing the vertical lift design. The breakers had primary drawout stabs, while the switchgear contained stationary drawout clusters in porcelain cylinders.

In the mid 1950's GENERAL ELECTRIC followed its original designs with a series of breakers also called the AM series. This series was characterized initially by the continued use of solenoid operated closing mechanisms, and a open door drawout design. The circuit breakers of this series were designated:
  - AM 4.16 50
  - AM 4.16 75
  - AM 4.16 150
  - AM 4.16 250
  - AM 4.16 350
  - AM 7.2 250
  - AM 7.2 500
  - AM 13.8 150
  - AM 13.8 250
  - AM 13.8 500
  - AM 13.8 750
  - AM 13.8 1000

The above breakers were offered in a number of models with amperage ranges from a low of 600 amps for some designs to 3000 amps for other designs.

The breakers were also offered in a number of momentary current ratings.

In the 1960’s GENERAL ELECTRIC continued with its basic original designs but at this stage, offered the breakers with stored energy closing mechanisms in place of the original solenoid operated closing mechanisms. The original solid-state design was the ML11. Subsequently the ML12 and ML 13 mechanisms replaced the original design

It should be noted that there were two distinct models of AM13.8 750 and AM13.8 1000 and. These distinct models were not interchangeable.

The Medium Voltage Circuit Breakers manufactured by GENERAL ELECTRIC have been obsoleted...

All original Complete Circuit Breakers are available directly from the Satin International and Satin American Corp.

Replacement Parts for the majority of all GENERAL ELECTRIC CIRCUIT BREAKERS are in stock and available from Satin International.

Along with Renewal Parts, Satin International maintains an extensive library of original Instruction Books, Sales Catalogs, Blue Print Documentation, and Replacement Parts Information for all Circuit Breakers manufactured GENERAL ELECTRIC

In regards to Replacement and Renewal parts for Medium Voltage Air Circuit Breakers Satin International Stocks all components for all generations of Medium Voltage Air Circuit Breakers manufactured GENERAL ELECTRIC.

  - Stationary main contacts, contact kits and contact assemblies,
  - Movable main contacts, contact kits, and each contact assembly,
  - Stationary arcing contacts, contact kits, and contact assemblies,
  - Movable arcing contacts, contact kits, and each contact assembly,
  - Arc Chutes,
  - Electrical and Manual Operating Mechanisms,
  - Closing Mechanisms, Closing Assemblies, Stored Energy Mechanisms
  - Bushing Assemblies, Pins, Castings, Supports, Barriers, Insulation,
  - Electromechanical Trip Devices, Solid State Trip Devices, Trip Units,
  - Trip Coils, 24 volts dc, 48 volts dc, 125 volts dc, 250 volts dc,
  - Trip Coils, 120 volts ac, 240 volts ac, 480 volts ac
  - Closing Coils, 24 volts dc, 48 volts dc, 125 volts dc, 250 volts dc,
  - Closing Coils, 120 volts ac, 240 volts ac, 480 volts ac
  - Undervoltage Coils and  Undervoltage Devices, 24 volts dc, 48vdc, 125vdc, 250vdc,
  - Undervoltage Coils and Undervoltage Devices, 120 volts ac, 240 volts ac, 480 volts ac,
  - Closing relays 24 volts dc, 48 volts dc, 125 volts dc, 250 volts dc,
  - Closing relays 120 volts ac, 240 volts ac, 480 volts ac
  - Anti Pump Relays,
  - Charging Motors 24 volts dc, 48 volts dc, 125 volts dc, 250 volts dc,
  - Charging Motors 120 volts ac, 240 volts ac
  - Pole Assemblies and Pole Bases,
  - Secondary Disconnect Devices and Disconnect Contacts,
  - Primary Disconnect Clusters and Assemblies,
  - Dust Covers,
  - Drawout Assemblies, Racking Mechanisms
  - Closing Handles, Escutcheon Plates,
  - Inter Phase Barriers,