The 140UE-LTF3-D63 IEC Molded Case Circuit Breaker is a product of Allen-Bradley/Rockwell Automation that is manufactured as part of the 140U MCB product line. It features a Frame L frame size with a rating of 630 Amps and a trip unit and it provides adjustable thermal or adjustable magnetic protection types. The 140UE-LTF3-D63 Circuit Breaker has three poles and a current range of 630 Amps. This breaker and other circuit breakers in the 140U MCB series have current ratings between 100 and 630 Amps with 3 or 4 poles. It has approximate dimensions of 258 millimeters (height), 140 or 184 millimeters (width), and 104 millimeters (depth). Some of the general features of the series include factory or field-installable accessories, rotary variable-depth operating mechanisms, and a flex cable operating mechanism. It also has a thermal-magnetic current range of 15 to 800 Amps, an electronic current range of 70 to 1250 Amps, and a molded case switch current rating of 160 to 1250 Amps.

Additionally, the 140U MCB series, including the 140UE-LTF3-D63 Circuit Breaker, has a wide range of accessories. Some notable internal accessories include an auxiliary and alarm combination, alarm (trip) contacts, a shunt trip, and a field-installable and under-voltage release. The external accessories are terminal covers, standard terminal lugs, a pad-lockable hasp, phase barriers, a slide bar interlock, and a plug-in base. It also features a direct coupler rotary operating mechanism, a flex-cable operating mechanism, and a variable depth rotary operating mechanism. The 140UE-LTF3-D63 Circuit Breaker is approved and rated for compliance with the CE, KEMA-KEUR, and IEC 60947-2 standards. The circuit breakers with the Frame L rating can be assembled from the circuit breaker frame as well as a trip unit, but it can also be purchased as an already assembled unit.