The Allen-Bradley 140U-I0C3-D15-S Molded Case Circuit Breaker (MCCB) has a voltage rating of 480 Volts, a current rating of 150 Amps, and an interrupt rating of 65 kA. It is an I-Frame circuit breaker with a magnetic trip mechanism that is non-adjustable and that is instantaneous while other circuit breakers with other frame sizes have trip mechanisms that are both adjustable and instantaneous. The I-Frame trip mechanism is usually set by the manufacturer of the circuit breaker. The Allen-Bradley 140U-I0C3-D15-S Molded Case Circuit Breaker has various certifications such as the UL Listing, the CE Mark, the CCC Mark, the IE3 Motors (IEC 60034-30) Mark, and the CSA Certification. It also conforms to international standards including the UL-489, CSA22.2 (No. 5), and IEC 60947-2 standards.

The Allen-Bradley 140U-I0C3-D15-S Circuit Breaker has external accessories such as the residual current, end cap (Bolton) terminals, motor operator, terminal lugs, flange cable, multi-cable terminal lugs, flange operator, extended terminal, internal NFPA 79, spreader terminal, variable depth (door), rear terminal, direct rotary, 25 mm phase barriers, terminal cover, extended phase barriers, DIN Rail mounting, padlock, and back plates. The Allen-Bradley 140U-I0C3-D15-S Circuit Breaker is a 3-pole Molded Case Circuit Breaker (MCCB) with a maximum ambient temperature rating of 40 degrees Celsius (104 degrees Fahrenheit) without derating, an operating temperature range of -25 to +70 degrees Celsius (-13 to +158 degrees Fahrenheit), a storage temperature range of -40 to +70 degrees Celsius (-40 to +158 degrees Fahrenheit), dimensions of 105 x 70 x 150 millimeters (4.13 x 2.76 x 5.9 inches) and an approximate weight of 3.7 kilograms (1.7 pounds). The circuit breaker offers both fixed thermal protection and fixed magnetic protection.