Product Description
The Allen-Bradley 150-A35NB-8L4ND, part of the SMC-2 series A, is a versatile and compact solid-state motor controller for three-phase squirrel cage induction motors. It accepts 400-480VAC input power, has a 35A amperage rating, and includes the 150-NA interface module with an open enclosure and an 8L4 protective module. It supports three standard operating modes plus an optional soft stop mode (requiring an interface module) and can be configured as a series controller or a motor controller with an HMI option. Compliant with CSA, UL, and CE (low voltage directive) standards, it's designed for easy installation, eliminating extra wiring when used with electromechanical motor starters, though the HMI option allows operation without one. Features include energy saving during light or no-load conditions, surge protection via a Metal Oxide Varistor and snubber networks, and an operating temperature range of 0-50C (storage: -40-85C) with 5-95% non-condensing relative humidity. An LED indicates unit status.
Is Your Device Showing These Signs?
The Allen Bradley 150-A35NB-8L4ND SMC Plus Smart Motor Controller commonly experiences issues such as nuisance tripping due to incorrect overload settings or phase imbalance. Firmware corruption during power cycles necessitates reflashing the controller. Communication failures arise from damaged Ethernet/IP ports or incorrect IP address configurations. Contactor failure is attributed to coil burnout or worn contacts, requiring replacement. Parameter configuration errors lead to improper motor control and protection, demanding careful review and adjustment of settings.
Technical specifications
The Allen-Bradley 150-A35NB-8L4ND is a compact, solid-state motor controller (SMC-2 series A) for three-phase induction motors, accepting 400-480VAC and rated at 35A. It includes the 150-NA interface module and 8L4 protective module. It offers standard operating modes, an optional soft stop, and can be configured as a series controller or with an HMI. It's compliant with CSA, UL, and CE standards, easy to install, and features energy saving, surge protection, and a wide operating temperature range. An LED indicates its status.
Our Repair Process for the
150-A35NB-8L4ND
Our repair process for the Allen Bradley 150-A35NB-8L4ND SMC Plus Smart Motor Controller begins with a thorough diagnostic evaluation to pinpoint the root cause of the malfunction, including verification of overload settings, phase balance, and communication integrity. Suspected firmware corruption requires immediate reflashing to the latest stable version. Damaged Ethernet/IP ports necessitate repair or replacement, with IP address configurations verified for network compatibility. Contactor failure demands complete replacement with a new, factory-certified component. Parameter configuration errors are rectified through a systematic review and adjustment of all settings to ensure proper motor control and protection according to specified application requirements.
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.
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