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Allen Bradley 140G MCB 140G-H3X3
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140G-H3X3

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The Allen-Bradley/Rockwell Automation 140G-H3X3 frame is an industrial circuit breaker frame. It has been designed and manufactured as part of the Allen-Bradley Bulletin 140G series and it is meant to function as a key component in Bulletin 140G series circuit breakers. The 140G-H3X3 circuit breaker frame is used to host a module that is known as a trip unit. The breaker frame and the trip unit together form a complete Allen-Bradley Bulletin 140G series molded case circuit breaker. The 140G-H3X3 circuit breaker frame supports 3 poles and 135 Amps of rated current.

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Technical specifications for 140G-H3X3

ManufacturerEaton Cutler-Hammer
BrandEaton Cutler-Hammer
Part Number/Catalog No.140G-H3X3
Product TypeMolded Case Circuit Breaker
FrameH
Amps125
Interrupting Rating35 kA
Protection TypeBreaker Frame
Current RangeFrame Only
Rated Insulation Voltage1000 V
Rated Impulse Withstand Voltage8 kV
Weight2.65 lb
Mechanical Life240 Operations/hr.
Electrical Life120 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-H3X3 circuit breaker is a 140G molded case circuit breaker manufactured by the Eaton Corporation. The 140G-H3X3 circuit breaker is classified under the Eaton 140G series of circuit breakers and it features a rated insulation voltage of 1000 Volts. The unit features the current range frame while the protection feature is a breaker frame. The molded case circuit breaker is operated by using electronics to detect the current flow and by modeling the associated heat generated by the current. The 140G-H3X3 circuit breaker comes with an interrupting rating of 35 kA at 480 Volts while the unit’s current rating is 125 Amps. The frame type or frame rating is “H,” and the current range is classified as “frame only.”

The 140G-H3X3 circuit breaker features a rated impulse withstand voltage of 8 kV while the unit features a mechanical lifespan of 240 operations per hour. The electrical life is 120 operations per hour. The 140G-H3X3 circuit breaker is designed to provide applications with overcurrent protection for the conductors and the equipment. Whenever the current passes the value and the duration that can cause dangerous temperatures in the conductor or its insulation, the circuit breaker opens or closes to protect the equipment. The molded case circuit breaker is used as the main power disconnecting means on the control panel. It provides protection from overcurrent as well as short currents. Electronic circuit breakers can adjust thermal trip ratings and shape the trip that is available and this leads to a few trip units that have the ability to protect the current range. In some instances, the rating plug can be used for limiting the adjustability range.

Revision Part #Also known as
140G-H3X3 Ser A140G-H3X3/A, Series A, Rev A
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