150-F361NBD | Allen-Bradley SMC Flex Smart Motor Controller, 361A, 300–500HP, 200–460VAC, Open Type

The 150-F361NBD is a solid-state soft starter from the SMC Flex family by Allen-Bradley, designed to reduce the mechanical and electrical stress during motor startup and shutdown. It provides smooth acceleration and deceleration for three-phase induction motors, improving system reliability and minimizing wear on mechanical parts. This helps extend motor lifespan and reduce maintenance costs in industrial environments. The controller is suitable for applications such as pumps, fans, compressors, and conveyors. It is engineered to operate motors up to 300 HP (line connection) or 500 HP (delta connection), making it ideal for medium to large industrial loads. It also integrates overload, stall, and jam protection, which enhances equipment safety and system uptime.

The 150-F361NBD is rated for continuous output current of 361 Amperes, capable of operating motors up to 300 Horsepower when connected in line, or up to 500 Horsepower in delta configuration at 460 VAC. This makes it highly suitable for large-scale applications where high starting torque is required. It supports various load types with different inertia and torque demands, ensuring safe startup without excessive current spikes. The controller’s design minimizes voltage drop during acceleration and offers consistent torque performance. Additionally, its internal protection mechanisms are calibrated to support sustained high loads under harsh conditions. It is also equipped to handle overloads and thermal derating effectively.

Yes, the 150-F361NBD is equipped with comprehensive protection features, including electronic overload protection, stall detection, jam detection, phase imbalance monitoring, and ground fault input support. It uses internal current sensing and thermal modeling to detect abnormal operating conditions. The integrated LED indicators provide clear status signals and error codes for quick diagnostics and maintenance. Trip resets can be configured as either automatic or manual, depending on system requirements. This smart protection helps prevent damage to motors and connected loads by interrupting power during dangerous events. It also ensures the safety of personnel and equipment by providing early warnings and precise fault localization.

The 150-F361NBD includes programmable auxiliary contacts (1 NO / 1 NC) that can be configured to signal various operating conditions such as motor run, fault, or ready status. It also provides inputs for tachometer feedback and ground fault transformer integration, enhancing its monitoring and diagnostic capabilities. LED indicators on the front panel help operators identify system status and fault conditions quickly. The unit also supports optional control modes such as Delta Connection with shorted SCR protection and Line Connection with isolation contactor. This flexibility makes it adaptable to different wiring schemes and system designs. All these features contribute to a smarter, more responsive motor control solution.

Yes, the 150-F361NBD supports delta connection with and without shorted SCR protection. Delta configuration allows higher horsepower motors to be controlled with reduced line current, which can lead to improved efficiency and lower power loss in large systems. It also enables the use of smaller cables and circuit protection devices, potentially reducing installation costs. The delta wiring scheme is particularly beneficial in applications with high starting torque or frequent starts and stops. However, proper isolation contactors and overload coordination must be implemented to maintain system safety. Always follow manufacturer-recommended wiring diagrams and specifications when using delta connection.