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2-4 WEEKS LEAD TIME
24
24 MONTH REPAIR WARRANTY
ISO CERTIFIED QUALITY
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.


Product Description
The 154-A11NA Starting Torque Controller (STC) is a solid-state controller for low-horsepower, three-phase and single-phase squirrel cage induction motors. It minimizes mechanical and electrical shock from direct online starting, providing smoother starts and reducing downtime from vibration-related issues. No bypass is needed as it handles full-load motor current. The STC activates upon line phase energization, requiring control power but not a start signal. It supports single or double-phase control. Double-phase control offers greater current reduction but extends ramp-up time and reduces starting torque, with starting current potentially exceeding 50%, though with better balance than single-phase control. Rated for 120V single-phase motors up to 11 Amps, the 154-A11NA STC is suitable for permanent split capacitor (PSC) and Capacitor Start Capacitor Run (CSCR) single-phase motors, and applications needing smooth starts and stops, such as trolleys, cranes, shrink wrap machines, monorails, overhead doors, compressors, material handling, lifts, fans, pumps, elevators, and conveyors.
Technical specifications
The 154-A11NA Starting Torque Controller (STC) is a solid-state controller for low-horsepower, three-phase and single-phase induction motors. It reduces mechanical and electrical shock during starting, handling full-load current without needing a bypass. It activates upon line phase energization and supports single or double-phase control, with double-phase offering greater current reduction but longer ramp-up time. Rated for 120V single-phase motors up to 11 Amps, it's suitable for PSC and CSCR motors and applications needing smooth starts/stops.
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.
Buying Options
To receive a quote within 2 hours, please provide us with the details of your requirements. Our team will promptly review your request and send you a custom offer.

Ships from Rochester, NY