The 140G-K3X3 molded case circuit breaker frame is an Allen-Bradley/Rockwell Automation Bulletin 140G series Size K molded case circuit breaker frame. It functions as the frame for a compatible trip module, and the frame and the trip module together constitute a complete Bulletin 140G molded case circuit breaker. The 140G-K3X3 molded case circuit breaker frame has a current rating of 400 Amps. It also features 3 poles. The ambient operating temperature range for the 140G-K3X3 molded case circuit breaker is between 0 and 40 degrees Celsius or 32 and 104 degrees Fahrenheit.
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Manufacturer | Eaton Cutler-Hammer |
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Brand | Eaton Cutler-Hammer |
Part Number/Catalog No. | 140G-K3X3 |
Product Type | Molded Case Circuit Breaker |
Frame | K |
Amps | 400 |
Interrupting Rating | 35 kA |
Protection Type | Breaker Frame |
Current Range | Frame Only |
Rated Insulation Voltage | 1000V |
Rated Impulse Withstand Voltage | 8 kV |
Weight | 7.17 lb |
Mechanical Life | 120 Operations/ hr. |
Electrical Life | 60 Operations/ hr. |
The 140G-K3X3 circuit breaker is a molded case circuit breaker made by Eaton Cutler-Hammer. This device is part of the 140G series of circuit breakers that run on a voltage of 600 Volts AC and that come with K frames and current ratings of 400 Amps. The 140G-K3X3 circuit breaker features an interrupting rating of 35 kA, 3 poles, bolt-on connection, and 3 phases. The 140G circuit breakers have the li–long-time and instantaneous functions as well as a variety of mounting selections and approvals from the UL489, IEC 60947-2, CCC, CSA, CE, UL, and CSA standards. It is known for providing overcurrent protection for equipment and conductors by opening automatically before the current reaches a value that will cause an excessive and dangerous temperature in the conductors or conductor insulation. Additionally, this circuit breaker can serve as the primary disconnecting mechanism for a control panel.
The protection that the 140G-K3X3 circuit breaker provides is protection from low overcurrents and short-circuit currents. Other features of the 140G-K3X3 molded case circuit breaker include an interrupting rating of 35 kA at 480 Volts AC and one of 50 kA at 415 Volts AC, a frequency rating of 50 to 60 Hertz, and a maximum temperature rating of 104 degrees Fahrenheit. It is suitable for use or storage in environments with a temperature range of -40 to 176 degrees Fahrenheit. This circuit breaker is a customer-friendly accessory that is designed to help with the quick and easy set-up process of almost any project type. Most of the circuit breakers like the 140G-K3X3 circuit breaker have electronic protection, but some also have thermal-magnetic protection which is the same protection as the electronic protection except that it allows for the customization of the protection curves for various specific applications.
Revision Part # | Also known as | |
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140G-K3X3 Ser A | 140G-K3X3/A, Series A, Rev A | Request a quote |
Don't see your particular revision? Contact us now. |
The Allen-Bradley 140G-K3X3 Molded Case Circuit Breaker has a K Frame and 400 Amps. It also has a 35 kA Interrupting Rating and 3 Poles.