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Allen Bradley 140U MCB 140U-J6G3-D25

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140U-J6G3-D25

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The 140U-J6G3-D25 from Allen Bradley is a molded case circuit breaker, categorized under the 140U MCB series. Its design ensures reliable protection for electrical circuits, with various interruption ratings under different conditions, providing a broad scope for operational applications.

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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 of our products come with DO Supply's 2-year warranty.
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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.

Technical specifications for 140U-J6G3-D25

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140U MCB
Part Number140U-J6G3-D25
Weight6.38 lbs (2.89 kg)
UPC662074273461
IEC Interrupting 230 V AC100/100 kA (Icu/Ics, 230 V AC, 50 Hz)
IEC Interrupting 400 V AC70/70 kA (Icu/Ics, 400 V AC, 50 Hz)
IEC Interrupting 500 V AC25/13 kA (Icu/Ics, 500 V AC, 50 Hz)
IEC Interrupting 690 V AC14/7 kA (Icu/Ics, 690 V AC, 50 Hz)
Breaking Capacity 240 V AC100 kA (240 V AC, 60 Hz)
Breaking Capacity 480 V AC65 kA (480 V AC, 60 Hz)
Breaking Capacity 600 V AC25 kA (600 V AC, 60 Hz)
Frame SizeJ Frame (250 A)
Poles3 Poles
Shunt TripOptional (140U-H-SN)
Current LimitingYes (current-limiting design)
Trip Unit TypeThermal-magnetic or electronic
Thermal TripFixed or adjustable (0.4–1 × Ie)
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The Allen Bradley 140U-J6G3-D25 circuit breaker is a robust molded case device, integral to safeguarding electrical systems. It has a rated frame size of J, suitable for a maximum of 250 A. Operable with three poles, this breaker caters to a variety of system requirements.

In terms of performance, the 140U-J6G3-D25 delivers impressive fault interruption ratings. For 230 V AC at 50 Hz, it achieves an interrupting capacity of 100 kA. Similarly, at 400 V AC, it offers a dependable 70 kA interruption. This performance extends to other voltage ratings, such as 500 V AC with 25 kA and 690 V AC at 14 kA, indicating its versatility in various applications.

The device's breaking capacities are also noteworthy, achieving 100 kA at 240 V AC, 65 kA at 480 V AC, and 25 kA at 600 V AC, ensuring effective protection against overcurrent events.

The 140U-J6G3-D25 supports a current-limiting design to prevent excessive fault currents from affecting the circuit. The trip unit can be either thermal-magnetic or electronic, providing flexibility in functionality. Furthermore, the thermal trip can be fixed or adjustable within a range of 0.4 to 1 times the rated current (Ie). For enhanced control, an optional shunt trip (140U-H-SN) is available, enabling remote operation. This circuit breaker combines durability with advanced protection features, making it suitable for a wide range of feeder and control applications.