The Allen-Bradley 140G-J6H3-D25 molded case circuit breaker is a high-performance circuit breaker with an electronic trip unit designed to provide overcurrent protection to the conductors and other equipment in control panel applications. The 140G-J6H3-D25 circuit breaker features an electronic type of trip unit which provides true current sensing for applications requiring precise and accurate protection, and it provides a thermal overload curve that mimics/simulates the operation of the real thermal heater. The 140G-J6H3-D25 circuit breaker belongs to the J Frame breaker family with a continuous current rating of 250 Amps, and it is designed for circuits with a maximum operating voltage of 600 Volts AC. This device has a maximum interrupting rating of 65.0 kA, and a voltage withstand rating of 8000 Volts. The 140G-J6H3-D25 circuit breaker has an electronic trip unit that completely replicates the operation of a mechanical type of overload protection unit, thus allowing the operators to customize the tripping characteristic of the circuit breaker to match specific application needs. 

The 140G-J6H3-D25 circuit breaker also offers additional protection functionalities like the long-time setting that allows for an adjustable time delay from 3 seconds to 6 seconds, the adjustable short time setting, and the instantaneous setting (this is the magnetic part of the curve that allows for adjustment from 1.5 to up to 13 times the rating). The 140G-J6H3-D25 circuit breaker is rated 100% (continuous load rating) at 40 degrees Celsius, and even though the circuit breaker’s tripping performance is not really affected by the ambient temperature change, it is advisable to lower the maximum current to prevent contact damages that may result from overheating. The 140G-J6H3-D25 circuit breaker is CE, CCC, CSA, and UL certified, and it has approximate shipping dimensions of 140 x 82.5 x 160 millimeters.