The 140U-H6C3-C25-A-MT circuit breaker is a three-phase circuit breaker designed by Allen-Bradley. It is a Series B three-pole device that is used for safety and protection. The circuit breaker acts like an automatic electrical switch which prevents circuits from being damaged by an excessive overload current or by short circuits. This molded case circuit breaker works with 60 to 75 degrees Celsius rated wire. The 140U-H6C3-C25-A-MT circuit breaker comes with a current rating of 25 Amps. The voltage rating of the breaker is 600 Volts AC. It can be used with both single-phase AC and three-phase power supplies. The breaker has a rated frequency of 50/60 Hertz. Its frequency changes depending upon the applied load. The circuit breaker can interrupt a circuit at 65 kA. The breaker is certified with different environmental and industrial standards which makes it compatible with global applications. It can be operated at up to an altitude of 2000 meters above sea level without any decrease in working efficiency.

The Allen-Bradley 140U-H6C3-C25-A-MT circuit breaker is built by using an arc chamber which covers the switching contacts. The arc chamber comprises different units including different plates and chutes which play an important role in a short circuit situation. This circuit breaker variant can protect up to three different circuits at a time because it comes with three poles. The 140U-H6C3-C25-A-MT circuit breaker is compact in size and has a longer lifespan than other breakers because it uses high-quality materials. The front part has a push-to-trip button which is used manually to trip the device over a period of time to check whether the breaker is functioning properly or not.