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Allen Bradley 140G MCB 140G-J3F3-D15
Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with DO Supply's 2-year warranty.
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140G-J3F3-D15

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The Allen-Bradley/Rockwell Automation 140G-J3F3-D15 molded case circuit breaker is an adjustable thermal/magnetic type of molded case circuit breaker from the Bulletin 140G series. It comes with a Size J frame, 3 poles, and bolt-on end cap terminals. The adjustable thermal trip range for the 140G-J3F3-D15 molded case circuit breaker is from 105 to 150 Amps and the adjustable magnetic trip range is from 750 to 1500 Amps. It supports an interrupting rating of 35 kiloamps. The 140G-J3F3-D15 molded case circuit breaker can be installed on a DIN Rail or in a cabinet in any required position.

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Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with DO Supply's 2-year warranty.
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Technical specifications for 140G-J3F3-D15

ManufacturerEaton Cutler-Hammer
BrandEaton Cutler-Hammer
Part Number/Catalog No.140G-J3F3-D15
Product TypeMolded Case Circuit Breaker
FrameJ
Amps250
Interrupting Rating35 kA
Protection TypeAdjust Thermal/ Adjust Magnetic
Current Range150 A
Rated Insulation Voltage1000V
Rated Impulse Withstand Voltage8 kV
Weight5.51 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 Allen-Bradley/Rockwell Automation 140G-J3F3-D15 circuit breaker is a 3-phase circuit breaker. It has a current range rating of 150 Amps, it supports a maximum voltage of 600 Volts AC, and has a breaking capacity or interrupting capacity of 35 kiloAmps at a voltage of 480 Volts AC. The interrupt capacity of a breaker is the amount of fault current that it can safely interrupt without damaging itself. The 140G-J3F3-D15 circuit breaker has an adjustable thermal/adjustable magnetic trip unit. Note that the trip unit is the brain of the breaker. The unit functions by tripping the operating mechanism when a short circuit occurs or when there is an extended overload current.

The Allen-Bradley 140G-J3F3-D15 circuit breaker’s trip unit uses a temperature-sensitive device combined with an electromagnetic device to provide protection to the electrical circuits. For the frequency, the 140G-J3F3-D15 circuit breaker retains the same tripping functionalities when it is used in a system with a frequency of either 50 Hertz or 60 Hertz. However, with higher frequency systems, the 140G-J3F3-D15 circuit breaker may need to be derated to recalibrate. The 140G-J3F3-D15 circuit breaker has 3 poles, indicating that it supports 3-phase distribution systems. The 140G-J3F3-D15 circuit breaker has a molded case and its maximum operating ambient temperature is rated at 40 degrees Celsius. Note that the reliability of the 140G-J3F3-D15 circuit breaker can be highly affected by extreme differences in the surrounding temperature since the breaker’s trip unit is temperature-sensitive. For example, at an ambient temperature above 40 degrees Celsius, nuisance tripping is likely to occur and dangerous temperatures may be present at the breaker terminals.

Revision Part #Also known as
140G-J3F3-D15 Ser A140G-J3F3-D15/A, Series A, Rev A
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