Product Description
The Allen-Bradley 150-A97JB is a Series A, SMC-2 family solid-state smart controller designed for three-phase squirrel-cage motors. Operating within a 0-50C temperature range and 95% relative humidity, it accepts 400-480VAC input power and has a 97 Amp controller rating. Housed in a NEMA Type 12/IP54-certified enclosure, it offers protection against dust, water spray, and ice formation, making it suitable for harsh environments. Features include user-configurable soft start, current limit start, full voltage start (5 cycles), Smart Motor Braking (SMB), slow speed with braking, built-in bypass, overload protection, stall/jam detection, ground fault protection, communication modes, and voltage peak reduction for extended motor lifespan.
Is Your Device Showing These Signs?
The Allen Bradley 150-A97JB commonly experiences issues such as failed overload relays, resulting in motor protection faults and production downtime. Troubleshooting includes inspecting the thermal overload block for damage, verifying proper current settings, and confirming correct wiring connections. Contactor coil failures are also frequent, leading to the inability to energize the motor starter. Replacement of the coil or the entire contactor assembly is a standard solution. Auxiliary contact block malfunctions can disrupt control circuits, requiring inspection and potential replacement to restore proper functionality. Furthermore, worn or pitted main contacts cause voltage drops and overheating, necessitating contact cleaning or complete contactor replacement to maintain optimal performance and prevent motor damage.
Technical specifications
The Allen-Bradley 150-A97JB is a robust, 97 Amp solid-state smart motor controller for three-phase squirrel-cage motors. It operates in harsh environments due to its NEMA 12/IP54 enclosure, offering protection against dust, water, and ice. It supports various starting methods (soft start, current limit, full voltage), Smart Motor Braking, slow speed with braking, and includes built-in bypass and comprehensive motor protection features like overload, stall/jam, and ground fault detection, as well as voltage peak reduction.
Our Repair Process for the
150-A97JB
Our repair process for the Allen Bradley 150-A97JB begins with a thorough inspection of the thermal overload block for any signs of damage, followed by verification of the current settings and wiring connections. We then assess the contactor coil for failures, replacing the coil or the entire contactor assembly as needed. Auxiliary contact blocks are inspected, and replacements are performed to restore control circuit functionality. Finally, we examine the main contacts for wear or pitting, proceeding with contact cleaning or complete contactor replacement to ensure optimal performance and prevent motor damage.
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.

















