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Allen Bradley 140G MCB 140G-K3F3-D30
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140G-K3F3-D30

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The Allen-Bradley/Rockwell Automation 140G-K3F3-D30 circuit breaker is a 140G MCB series molded case circuit breaker. It is a thermal-magnetic type of circuit breaker and it is adjustable. The 140G-K3F3-D30 thermal-magnetic molded case circuit breaker comes with 3 poles and its interrupting code is K3. Its current rating is 300 Amps. The 140G-K3F3-D30 thermal-magnetic molded case circuit breaker’s thermal trip rating can be adjusted from 210 to 300 Amps and its magnetic trip rating can be adjusted from 1500 to 3000 Amps.

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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-K3F3-D30

ManufacturerEaton Cutler-Hammer
BrandEaton Cutler-Hammer
Part Number/Catalog No.140G-K3F3-D30
Product TypeMolded Case Circuit Breaker
FrameK
Amps400
Interrupting Rating35 kA
Protection TypeAdjust Thermal/ Adjust Magnetic
Current Range300 A
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 Allen-Bradley 140G-K3F3-D30 molded case circuit breaker is a factory-assembled complete circuit breaker from the 140G K Frame circuit breaker series that is built for short-circuit, current, and thermal overload protection for the conductors and other equipment on the factory floor. The 140G-K3F3-D30 circuit breaker has adjustable magnetic and thermal trip values to accommodate a larger range of applications, and it features a very compact design with easy-to-install factory and field accessories. The 140G-K3F3-D30 circuit breaker belongs to the K Frame breaker series with a 400 Amps continuous current rating and a 600 Volts AC maximum operating voltage. It has a maximum breaking capacity rating of 35 kA at 480 Volts AC, and a rated voltage withstand of 8 kA. The 140G-K3F3-D30 circuit breaker has a mechanical lifespan of about 20,000 possible operations (without loading), and an electrical lifespan of up to 4000 operations at 415 Volts AC.

The 140G-K3F3-D30 circuit breaker has an 80% efficient continuous load rating at 40 degrees Celsius, and it gradually begins to de-rate at a temperature above this value. It has an adjustable thermal/magnetic trip unit with adjustable thermal trip ratings from 210 Amps to 300 Amps and magnetic trip ratings from 1500 Amps to 3000 Amps. The 140G-K3F3-D30 circuit breaker has a rotary switch handle of the make-break type that helps to open and close circuit breaker’s contact, and it also indicates whether the breaker is ON, OFF, or TRIPPED. It is capable of providing both fast-acting thermal and instantaneous magnetic trip actions for complete current and thermal overload protection. The 140G-K3F3-D30 circuit breaker has 3-pole wiring and it is suitable for 3-phase applications. It has bolt-on line and load terminals as standard features and it is supplied with 1-meter-long pig-tail wiring for terminating optional internal accessories. The 140G-K3F3-D30 circuit breaker is CCC, CSA, UL, and CE certified, and it weighs approximately 7.17 pounds.

Revision Part #Also known as
140G-K3F3-D30 Ser A140G-K3F3-D30/A, Series A, Rev A
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