The 140UE-H7E3-D12 circuit breaker is a motor circuit breaker that offers a number of control and protective services like a disconnect for a motor branch circuit, manual switching, and magnetic protection for short circuit and branch circuit protection. The 140UE-H7E3-D12 motor circuit breaker has one UL/CSA listing as a manual motor controller and it has an optional approval rating for group installation and motor disconnecting. For group installation, the 140UE-H7E3-D12 motor circuit breaker must be installed following the recommended guidelines. These guidelines demand the use of an upstream short-circuit or branch-circuit protective device (BCPD). The 140UE-H7E3-D12 motor circuit breaker has the capability to provide all the important NEC/CEC requirements for the control and protection of individual motor branch circuits, without the need for extra protective devices.

It is important to observe all safety measures when installing the Allen-Bradley 140UE-H7E3-D12 motor circuit breaker. The circuit breaker’s starter or contactor should not cause any danger to people or machines in case of a short circuit. In the case of a short circuit, current-limiting, or fasting opening situation, the 140UE-H7E3-D12 motor circuit breaker makes it possible to create an economical and full short-circuit coordinated starter combination, and this has type-2 coordination. The 140UE-H7E3-D12 circuit breaker is ideal for industrial parts. Therefore, regular operational tests must be done to check if the rating and functioning of the Allen-Bradley 140UE-H7E3-D12 circuit breaker are optimum. When in operation, the temperatures around the breaker must not be very high, because the temperature can affect the tripping mechanism of the 140UE-H7E3-D12 circuit breaker.