Product Description
The Allen-Bradley 140G-J2F3-D17 is an advanced 140G circuit breaker designed for thermal overcurrent and short-circuit protection. This 3-pole breaker, weighing 5.51 pounds and measuring 105 x 82.5 x 160 mm, features a J Frame enclosure (maximum 250 Amps) and a 175 Amp current rating. It includes a variable thermal/magnetic trip unit adjustable from 122.5-175 Amps (thermal) and 875-1750 Amps (magnetic). Its interrupting capacity is 25kA at 480VAC, 65kA at 240VAC, and 14kA at 600VAC. The ultimate short-circuit breaking capacities range from 10kA to 65kA depending on voltage (220-690VAC and 250-500VDC). Recommended wiring is copper or aluminum rated for at least 167F, and ambient operating temperature should not exceed 104F to avoid derating. The mechanical life is rated for 25,000 operations at 240 operations/hour, while the electrical life is 8,000 operations at 120 operations/hour and 415VAC.
Is Your Device Showing These Signs?
The Allen Bradley 140G-J2F3-D17 molded case circuit breaker commonly experiences issues such as nuisance tripping due to incorrect trip settings or thermal overload. We address contact erosion from repetitive high fault current interruptions, which reduces breaker lifespan and increases resistance. Calibration drift in the electronic trip unit causes inaccurate protection, requiring recalibration or replacement. Damaged or loose terminal connections lead to voltage drops and overheating, necessitating terminal repair or breaker replacement. Internal component failures within the breaker mechanism prevent proper operation, demanding a comprehensive breaker rebuild or replacement.
Technical specifications
The Allen-Bradley 140G-J2F3-D17 is a 3-pole circuit breaker designed for thermal overcurrent and short-circuit protection. It's a J Frame breaker (max 250A) with a 175A current rating and adjustable thermal/magnetic trip settings. It offers varying interrupting capacities depending on voltage, and its mechanical/electrical life is rated for a specific number of operations under defined conditions. Proper wiring and ambient temperature are crucial for optimal performance.
Our Repair Process for the
140G-J2F3-D17
Our repair process for the Allen Bradley 140G-J2F3-D17 molded case circuit breaker begins with a thorough inspection to identify the root cause of malfunction, whether it be nuisance tripping, contact erosion, calibration drift, damaged terminals, or internal component failure. We meticulously address nuisance tripping by verifying and correcting trip settings to align with operational requirements and prevent thermal overloads. Contact erosion is rectified through contact refurbishment or complete breaker replacement to ensure optimal conductivity and longevity. Calibration drift is corrected by recalibrating the electronic trip unit to factory specifications or replacing the unit if recalibration is not feasible. Damaged or loose terminal connections are repaired or replaced to eliminate voltage drops and prevent overheating. Internal component failures necessitate a comprehensive breaker rebuild, involving replacement of faulty components, or a complete breaker replacement to guarantee reliable operation and protection.
Your Guarantee: Warranty & Lifetime Support
Your satisfaction is our top priority, and we confidently stand behind the quality of our repairs. That's why every repair service is covered by our comprehensive 24-month warranty. Furthermore, we offer lifetime phone support – if you have questions or need assistance related to our repair down the road, we're here to help. Our service commitment is straightforward: we guarantee our work, and if you're not satisfied, we will make it right. Learn More about our Repair process.
Comprehensive Repairs You Can Depend On
We take immense pride in the quality and reliability of our work. Our process goes beyond simply fixing the immediate problem. We perform a comprehensive inspection of your main board (or other equipment) and proactively replace components known to be failure-prone or showing signs of potential future failure. Before any item is returned, it undergoes rigorous functional testing to ensure it meets performance specifications and operates flawlessly. Visit our main Repair Services page to learn more.
Save Significantly
Our primary goal is to save you hundreds, or even thousands, of dollars compared to the cost of new equipment replacement. By repairing existing components, we provide an economical solution that is also eco-friendly. At Roc Industrial, our commitment to integrity and community drives our consistent growth and ensures you receive a reliable, cost-effective solution.
Please Note: Roc Industrial operates as an independent service provider and is not an authorized distributor for the manufacturers or brands mentioned. Consequently, the original manufacturer's warranty is not applicable to items repaired or sold by us. Roc Industrial provides its own 2-year warranty on all repair services performed.