The Allen-Bradley 140U-I6C3-C50 UL Listed Molded Case Circuit Breaker is an I-Frame circuit breaker with a fixed thermal and fixed magnetic protection unit, and it is designed to give robust short-circuit protection and thermal overcurrent protection to industrial control panel applications. The 140U-I6C3-C50 Molded Case Circuit Breaker, like every bulletin 140U circuit breaker, is designed with a small footprint (with up to a 50% size reduction), and it offers a higher interrupting rating (up to 6 times higher than conventional circuit breakers have) within its compact package. It is suitable for reverse feed applications, and it can also be employed in Heating, Air Conditioning, and Refrigeration (HACR) applications, control circuit applications, feeder circuit applications, and high-intensity discharge applications.

The 140U-I6C3-C50 Molded Case Circuit Breaker is a 3-pole circuit breaker with a 50 Amps current rating and with a maximum interrupting rating of 65 kA. It has an operating voltage range of 230 to 690 Volts AC and a rated insulation voltage of 750 Volts. The 140U-I6C3-C50 Molded Case Circuit Breaker has a standard mechanical lifespan of 100,000 operations and an electrical lifespan of 10,000 operations. It has aa fixed thermal and fixed magnetic protection unit that provides thermal overcurrent protection via a bimetal heat element and a fixed magnetic trip action via a reverse loop contact. The 140U-I6C3-C50 Molded Case Circuit Breaker has a rated operating ambient temperature range between -8 degrees Celsius and 60 degrees Celsius, and a maximum operating altitude of 2000 meters without de-rating. It comes in an open style enclosure, and it has an approximate shipping weight of 1.4 kilograms (3.0 pounds) and average mounting dimensions of 139.7 x 76.2 x 76.2 millimeters (5.5 x 3.0 x 3.0 inches).