140MG-J8P-D25

The 140MG-J8P-D25 circuit breaker is a molded-case circuit breaker that has been developed and manufactured by Allen-Bradley. The main purpose of this circuit breaker is to open and close circuits in a manual or automatic way. When applied within its ratings, the breaker can open automatically on a predetermined current without causing any damage to its structure. These breakers are used as protective equipment for a series of machines or simply to isolate a motor. Breakers from the 140MG series like this one are popular because of their motor protection features. The Allen-Bradley 140MG-J8P-D25 molded-case circuit breaker belongs to the J Frame frame series and it operates with three-phase voltage. Its rated operational current is 250 Amps. This circuit breaker has different interrupting capacity ratings according to the voltage that is applied, which can go from 240 to 600 Volts.

The Allen-Bradley 140MG-J8P-D25 molded-case circuit breaker is made to operate in relatively hot and humid environments. Its structure is composed of glass fiber moldings, synthetic resins, metallic parts that have been treated for anti-corrosion, protected zinc platings, and electronic circuits that have been protected with anti-condensation layers. It is recommended that the Allen-Bradley 140MG-J8P-D25 molded-case circuit breaker be used with aluminum or copper wirings with a temperature rating of 75 degrees Celsius. The current flow can easily heat up the wirings and terminals and that is the main reason why wirings rated at a temperature higher than the rated temperature need to be installed. The operational temperature goes from -25 to 70 degrees Celsius and it has an approximate weight of 2.5 Kilograms. There is an accessory and replacement part catalog that is available for the breakers of this series.