Product Description
The ABB ACB330-03U-46A2-2 is a robust and reliable air circuit breaker engineered for superior performance in demanding power distribution applications. This ACB provides exceptional protection against overloads, short circuits, and other electrical faults, ensuring the safety and integrity of your electrical system. Featuring a high breaking capacity and advanced tripping characteristics, it delivers dependable circuit interruption and minimizes downtime. The ACB330-03U-46A2-2 is equipped with sophisticated monitoring and control capabilities, enabling precise management of power flow and facilitating proactive maintenance. Its durable construction and long operational lifespan guarantee years of trouble-free service, making it a cost-effective solution for critical power infrastructure. This air circuit breaker meets stringent industry standards and is suitable for use in a wide range of industrial, commercial, and utility settings.
Is Your Device Showing These Signs?
ABB ACB330-03U-46A2-2 air circuit breakers commonly experience issues with the spring charging motor, requiring replacement or repair to ensure proper breaker operation. Contact wear and erosion on the main and arcing contacts lead to increased resistance and potential failure, necessitating contact refurbishment or replacement. The shunt trip and closing coil mechanisms are prone to malfunction, preventing remote operation and requiring coil replacement or adjustment. Breaker tripping failures due to faulty trip units or sensors demand trip unit calibration, repair, or replacement. Insulation degradation within the breaker, identified through insulation resistance testing, necessitates cleaning, re-insulation, or component replacement to prevent electrical faults.
Technical specifications
The ABB ACB330-03U-46A2-2 is a robust, three-pole, air circuit breaker engineered for reliable overcurrent and short-circuit protection in demanding electrical distribution systems. This device features a rated operational voltage of 690VAC and a rated current of 3200A, ensuring substantial power handling capability. Equipped with an advanced electronic trip unit, it provides precise and adjustable protection characteristics, including long-time, short-time, and instantaneous overcurrent settings. The ACB330-03U-46A2-2 incorporates a manual closing mechanism and an electrical tripping system for remote operation and control. Designed for draw-out mounting, it facilitates easy maintenance and replacement without disrupting the entire power system. The breaker's construction adheres to IEC 60947-2 standards, guaranteeing performance and safety.
Our Repair Process for the
ACB330-03U-46A2-2
Our repair process for ABB ACB330-03U-46A2-2 air circuit breakers begins with a comprehensive inspection and testing phase to pinpoint all existing issues. Spring charging motor malfunctions are addressed through immediate replacement or meticulous repair to guarantee proper breaker charging. Contact wear and erosion are resolved via contact refurbishment or complete replacement, ensuring optimal conductivity and performance. Defective shunt trip and closing coil mechanisms undergo coil replacement or precise adjustment to restore reliable remote operation. Breaker tripping failures are rectified through trip unit calibration, repair, or replacement, guaranteeing accurate and dependable tripping functionality. Insulation degradation is countered with thorough cleaning, re-insulation, or component replacement, preventing electrical faults and ensuring long-term operational safety.
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.

















