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Help CenterALLEN-BRADLEY Softstarter, SMC-50 Open, 317A 150-S317NBD
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As a trusted supplier with over a decade of experience since 2011, Rossonix Co., Limited is proud to offer the genuine Allen-Bradley SMC-50 Open Softstarter. This 317A unit is engineered to deliver reliable, controlled acceleration for your industrial motors, significantly reducing mechanical stress and electrical inrush currents. Our commitment to quality, backed by ISO9001 certification, ensures you receive a component that enhances system longevity and operational efficiency. With a strong export presence across global markets including North America, Europe, and Asia, we provide the connectivity and expertise to support your projects wherever they are located.
The Allen-Bradley 150-S317NBD SMC-50 Softstarter represents a sophisticated solution for managing three-phase AC induction motors. Its open-style design allows for seamless integration into panel assemblies, offering flexibility for system builders. By implementing a controlled ramp-up of voltage and current, this device addresses common challenges associated with direct-on-line starting.
Precise Motor Control: Delivers smooth, stepless acceleration, eliminating jerky starts that can damage connected equipment like belts, gears, and pumps.
Current Limiting: Effectively caps the inrush current during startup, preventing nuisance tripping of circuit breakers and reducing demand charges on the electrical supply.
Extended Equipment Life: By minimizing mechanical shock and thermal stress on the motor windings, it significantly prolongs the service life of both the motor and the driven load.
Operational Flexibility: The open chassis design facilitates easy installation within custom control panels, allowing for tailored protection and control schemes.
Reduced Maintenance: Less stress on mechanical systems translates to fewer breakdowns, lower maintenance costs, and increased uptime for production lines.
The technical specifications of the SMC-50 soft starter are designed for robust performance in demanding industrial environments.
| Parameter | Specification |
| Brand & Series | Allen-Bradley SMC-50 |
| Full Model Number | 150-S317NBD |
| Rated Current | 317 Amps |
| Enclosure | Open Style (for panel mounting) |
| Phase | 3-Phase |
| Control Voltage | Typically 100-240V AC/DC (configurable) |
| Start Mode | Voltage Ramp, Current Limit (selectable) |
For clients, the benefits are direct and measurable. Cost savings arise from reduced energy peaks and lower maintenance. Enhanced reliability means fewer production stoppages. System protection safeguards your valuable motor assets from premature failure. Furthermore, the flexibility of the open-style unit allows integration into virtually any control panel layout, providing a customized solution without the constraints of a pre-fabricated enclosure.
Rossonix Co., Limited operates with a solid foundation of quality management systems, as evidenced by our ISO9001 certification. Our annual export value reflects a consistent and reliable supply chain trusted by partners worldwide. We ship efficiently from major ports including Shenzhen and Hong Kong, ensuring timely delivery to your location, whether in North America, Europe, Oceania, or other key markets we serve. Choosing this Allen-Bradley soft starter through us means partnering with a supplier dedicated to providing authentic components and logistical support that keeps your operations running smoothly. Contact us today to discuss how this 317A SMC-50 soft starter can be integrated into your application.
Frequently Asked Questions (FAQ)
Q1: What is the primary purpose of this SMC-50 soft starter?
A1: Its main function is to provide a controlled, reduced-voltage start for three-phase AC induction motors. This minimizes high inrush current and mechanical shock, protecting both the electrical system and the mechanical drive train.
Q2: What does "Open Style" or "SMC-50 Open" mean?
A2: "Open Style" indicates that the soft starter is supplied as a chassis without an external protective enclosure. It is designed to be mounted inside a user-provided control panel or cabinet, which provides the necessary environmental and safety protection.
Q3: Is this unit suitable for a 317 Amp motor?
A3: The 317A rating signifies the maximum current the soft starter is designed to handle continuously. It is typically selected for motors with a full-load current at or below this rating. Always consult motor nameplate data and applicable standards for precise sizing.
Q4: Can I adjust the starting torque and acceleration time?
A4: Yes, Allen-Bradley SMC-50 soft starters generally offer adjustable parameters such as start voltage, ramp time, and current limit settings. This allows fine-tuning of the motor's start characteristic to match the specific load requirements.
Q5: Does it include built-in motor protection features?
A5: While primarily a starting device, the SMC-50 series often includes basic protection functions like overload detection and phase loss monitoring. For comprehensive protection, additional devices like separate overload relays may be recommended depending on the application.
Q6: What control voltage does it require?
A6: The control voltage is typically configurable over a common range such as 100-240V AC/DC. The exact specifications for this model (150-S317NBD) should be verified from the official datasheet, which can be provided upon request.
Q7: Is technical documentation available?
A7: Yes, as a supplier, we can provide relevant datasheets, manuals, and dimensional drawings for the 150-S317NBD model to assist with system design and installation planning.
Q8: What are the key advantages over a direct-on-line (DOL) starter?
A8: Compared to a DOL starter, this soft starter provides a smooth start, reducing current inrush by up to 70-80%, which lessens stress on the motor, grid, and mechanical components. This leads to longer equipment life, lower maintenance, and potentially reduced energy costs.
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