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Allen Bradley 140G MCB 140G-K3X3
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140G-K3X3

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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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Technical specifications for 140G-K3X3

ManufacturerEaton Cutler-Hammer
BrandEaton Cutler-Hammer
Part Number/Catalog No.140G-K3X3
Product TypeMolded Case Circuit Breaker
FrameK
Amps400
Interrupting Rating35 kA
Protection TypeBreaker Frame
Current RangeFrame Only
Rated Insulation Voltage1000V
Rated Impulse Withstand Voltage8 kV
Weight7.17 lb
Mechanical Life120 Operations/ hr.
Electrical Life60 Operations/ hr.
Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

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
140G-K3X3 Ser A140G-K3X3/A, Series A, Rev A
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