The 140U-H2C3-D10 circuit breaker is a 140U 3-pole molded case circuit breaker with 20 to 29 kiloamps of breaking capacity at 480 Volts AC. The integrated fixed thermal/fixed magnetic tripping module is available on the circuit breaker. The operating current rating of the 140U-H2C3-D10 circuit breaker is 100 Amps. The dimensions of the H-Frame breaker enclosure are 5.5 x 2 x 3 inches and it has an approximate weight of 1.36 kilograms. The 140U-H2C3-D10 circuit breaker can provide overload and short-circuit protection and it can be used as the primary protection source and as a branch circuit protection device for bus-bar trunking tap-offs, individual enclosures, and panelboards. The 140U-H2C3-D10 circuit breaker complies with numerous standards including the CE, KEMA-KEUR, CCC, and CSA standards.

During operation, the 140U-H2C3-D10 circuit breaker dissipates 20 Watts of energy as heat. The breaking capacity specifications for the circuit breaker at 50 Hertz are 35 kiloamps as the ultimate breaking capacity and 35 kiloamps as the service breaking capacity at 220 to 240 Volts AC, 25 kiloamps as the ultimate breaking capacity and 25 kiloamps as the service breaking capacity at 380 to 415 Volts AC, 22 kiloamps as the ultimate breaking capacity and 17 kiloamps as the service breaking capacity at 525 Volts AC, and 3 Amps as the ultimate breaking capacity and 3 kiloamps as the service breaking capacity at 690 Volts AC. The installation of high voltage and high current devices such as the 140U-H2C3-D10 circuit breaker should only be performed by trained technicians who are aware of and follow the necessary precautions relating to electrical systems. Failure to do so can lead to equipment damage and serious injury.