The 140U-J3D3-D20 circuit breaker is an electrical switch that is mostly used for safety and protection measures. It used to protect a circuit against current overload and short circuit conditions. The circuit breaker is manufactured by Allen-Bradley and it is a molded case circuit breaker. The breaker is housed inside a molded case that protects it against harsh industrial environmental conditions. The 140U-J3D3-D20 circuit breaker is a 140U series three-phase circuit breaker with a current rating of 250 Amps. The breaker has an amperage rating of 200 Amps. It is a J frame breaker with an interrupt rating of 40/35 kA. The breaker comes with fixed magnetic and thermal contact. A manual push-to-trip button is present on the front panel of the circuit breaker to manually trip the circuit and check the breaker functionality over time. It can support various high interrupt ratings. It comes with support for three poles. The breaker is certified with different global standards like the UL, CSA, and CE standards.

The 140U-J3D3-D20 circuit breaker has a voltage rating of 400 or 480 Volts. It is small and compact in size with dimensions of 4 inches in length, 4 inches in width, and 7 inches in height. The circuit breaker is equipped with many features that make it the first choice when it comes to industrial circuit breaker solutions. The 140U-J3D3-D20 circuit breaker features visible trip indication, a high current limiting capacity, and a high switching capacity. The circuit breaker uses a bolt on-mechanism for mounting in a panel space. It comes with a non-interchangeable trip and long time and instantaneous trip functions.