The Allen-Bradley 140U-I6C3-D10 Circuit Breaker is a 3-pole, I-Frame, inversed time MCCB (Molded Case Circuit Breaker) that has been designed and built by Allen-Bradley. This circuit breaker has a continuous current rating of 100 Amps and an interrupting rating or breaking capacity of 65 kA. Its Horsepower ratings vary according to the application voltage ratings. They can be 15 Horsepower at 200 Volts AC, 30 Horsepower at 380 to 415 Volts AC, 40 Horsepower at 460 Volts AC, and 50 Horsepower at 575 Volts AC.  The magnetic trip settings of the 140U-I6C3-D10 MCCB are in a range from 700 Amps to 1400 Amps. A specific feature of Allen-Bradley I-Frame circuit breakers like this one is that they have a non-adjustable trip setting that comes preset from the factory.

Inverse time circuit breakers such as the Allen-Bradley 140U-I6C3-D10 Circuit Breaker are designed for tripping at 100% to 125% of their rated continuous current settings. They are known as inverse time circuit breakers because their tripping speed is inversely proportional to the magnitude of the overcurrent they are sensing, that is, they take a longer time to open the circuit (trip) when the overcurrent is low and a shorter time to open the circuit (trip)when the overcurrent is of a higher magnitude. Some of the additional components that can be added to the Allen-Bradley 140U-I6C3-D10 Inverse Time Circuit Breaker are flex cable operators, rotary operators, auxiliary contacts, and internal control modules. Contact the manufacturer for spare parts such as connection lugs. A qualified technician should perform all the installation or maintenance work on this circuit breaker while taking every precaution to avoid injury and damage.