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.

Learn more

140G-KTH3-D30

Need a Specific Revision?

The Allen-Bradley/Rockwell Automation 140G-KTH3-D30 circuit breaker trip unit is a trip unit for molded case circuit breakers that provides electronic LSI protection. It has been designed and manufactured as part of the Allen-Bradley Bulletin 140G series. The 140G-KTH3-D30 circuit breaker trip unit supports long, short, and instantaneous or LSI tripping for protecting a control panel’s circuits. It has 3 poles and its frame is a Size K frame. The 140G-KTH3-D30 circuit breaker trip unit can be mounted horizontally or vertically.

Available

Available

$961

Ships Fri, May 23

1 in stock

Ships Fri, May 23.

In Stock

Ships from Raleigh, NC

2 Year DO Supply Warranty

Learn more

Warranty

We sell industrial automation parts backed by our 2-year DO Supply Warranty.
Shipping

Same-day domestic and expedited international shipping with UPS, FedEx, DHL, and more.
Payment Methods

AMEX, Visa, MasterCard, Discover, wire transfer, and more, plus flexible payment plans.
Repairs & Exchanges

Repair and exchange services for all existing automation products.
Reseller Options

Drop shipping, blind shipping, and account shipping with no extra fees.

Technical specifications for 140G-KTH3-D30

Manufacturer	Eaton Cutler-Hammer
Brand	Eaton Cutler-Hammer
Part Number/Catalog No.	140G-KTH3-D30
Product Type	Molded Case Circuit Breaker
Frame	KC
Amps	400
Interrupting Rating	Trip Unit
Protection Type	Electronic LSI
Current Range	300 A
Rated Insulation Voltage	1000V
Rated Impulse Withstand Voltage	8 kV
Weight	7.17 lb
Mechanical Life	120 Operations/ hr.
Electrical Life	60 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.

View as PDF

Request a Repair

The 140G-KTH3-D30 circuit breaker is a product of Eaton Cutler-Hammer and part of the 140G circuit breaker series. This is a molded case circuit breaker trip-unit and it operates on 600 Volts AC, and it has a KC frame rating of 400 Amps, a current range of 300 Amps, 3 poles, and it weighs 7.17 pounds. It features the electronic LSI protection type with a trip unit interruption rating. This device has an insulation voltage rating of 1000 Volts and an impulse withstand voltage of 8 kV. It also has long, short, and instantaneous functions. The Allen-Bradley 140G-KTH3-D30 molded case circuit breaker has a frequency rating of 50 to 60 Hertz, and varied trip ranges of 120 to 300 Amps for the long function, 180 to 3000 Amps for the short function, and an instant trip range of 450 to 3600 Amps. It comes with space-saving measurements of 4.04 inches in length, 5.49 inches in width, and 8.07 inches in height. The device is designed to provide excellent performance in environments with a storage temperature range of -40 to 176 degrees Fahrenheit, and an ideal ambient temperature rating of 104 degrees Fahrenheit.

In general, the 140G series molded case circuit breakers, including the 140G-KTH3-D30 circuit breaker, are specially made with specifications that include thermal, magnetic, and electronic trip unit protection capabilities. These units have high interruption and breaking abilities as well as a whole series of factory and field installed fittings. They are uniquely designed to provide line protection for the control panels. The 140G-KTH3-D30 circuit breaker trip unit is approved for universal use in UL, CSA, CCC, rated projects and it has IEC performance rated interrupting and breaking capacities. Additionally, they have various mounting options with an extensive range of accessories.