1E2UM

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Circuit breakers are necessary components of electrical systems intended to protect electrical components and circuits from overloads. The engineering of circuit breakers can often be complex and technical, but understanding the purpose and working principle of a 1E2UM Circuit Breaker can help anyone to gain valuable knowledge about these important devices.

1E2UM Application Field

The Eaton’s 1E2UM is a reliable, economic, DIN-rail mounted UL489 and UL1077 combination of circuit breaker for IEC, domestic, and export applications. It is suitable for circuits conducting no more than 690V, AC-1, DC-1 and AC-15, AC-20, and DC-20 rated current. The 1E2UM has high response protection and is designed to serve as protection against overload, short-circuit, and earth-fault current.

The 1E2UM is ideal for industrial and consumer applications, including lighting circuits, plastics processing machines, milling machines, ovens, ventilation and heating systems, generators and compressors, automated production lines, etc.

1E2UM Working Principle

The 1E2UM has a variety of features that make it an excellent choice for almost any application. The design utilizes terminals that are rated to 1.5X their amperage and a high level of impedance to reduce the electromechanical forces and harmonics during contact switching. The contacts of the 1E2UM are rated in accordance to UL489 and UL1077 standards and are designed to allow minimum arcing during switching.

The 1E2UM also has an adjustable trip setting, which allows users to set the trip level to suit their specific needs. The trip setting is easily adjustable and the 1E2UM can be set to trip within a range of 0.01 to 0.10 seconds. The trip time is adjustable via a single dial, and the trip setting indicator on the device allows users to view the current trip setting.

The 1E2UM is also designed to minimize contact wear and minimize arc-flash and insulation damage due to an internal arc chamber that isolates the device from current and arc-flash causing events. The 1E2UM also uses a combination of bi-halogen free thermal and electronic mechanism with adjustable short-circuit tripping characteristics.

Finally, the 1E2UM has heaters and a temperature switch to provide manual and automatic on / off temperature control. This temperature control feature allows users to ensure that the 1E2UM is working correctly without the need for manual switching.

The Eaton 1E2UM combines all of these features to create a reliable and efficient circuit breaker. The device is easy to install and maintain, and provides excellent protection against a wide variety of faults and overloads.

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