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Help CenterAllen-Bradley Motor Controller, SMC-3, Open Type, 251A 150-C251NBD
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As a trusted supplier in industrial automation with over a decade of experience, Rossonix Co., Limited is proud to offer the genuine Allen-Bradley SMC-3 Motor Controller. This open-type starter represents a reliable and robust solution for demanding motor control applications. We understand that operational uptime and equipment longevity are paramount for our global clientele across North America, Europe, Asia, and beyond. The SMC-3 controller is engineered to deliver precise motor starting, reliable overload protection, and consistent performance, helping you safeguard your critical machinery and optimize your production processes. With our established supply chain and commitment to quality certified by ISO standards, we ensure you receive a product that meets the high expectations associated with the Allen-Bradley name.
The Allen-Bradley 150-C251NBD SMC-3 controller is designed for heavy-duty industrial environments. Its open-type construction allows for easy integration into custom panels and enclosures, providing flexibility for system designers. The core function is to provide reliable across-the-line starting and protection for three-phase motors rated up to 251 amps.
Robust Construction & Design: Built with high-quality materials and components, the SMC-3 is designed for long service life and durability in challenging conditions, resisting vibration and electrical stress.
Precise Motor Protection: Features integrated overload relays that provide accurate and responsive protection against motor overloads, phase loss, and phase unbalance, helping to prevent costly motor burnouts and downtime.
Flexible Installation: The open-type design offers significant installation flexibility. It can be easily mounted in a user-provided enclosure that meets the specific environmental and safety requirements of the application.
Easy Maintenance & Serviceability: Components are accessible for inspection, testing, and replacement. Features like manual reset buttons and clear status indicators simplify troubleshooting and routine maintenance.
Compatibility & Integration: As part of the Allen-Bradley SMC family, it is designed for compatibility with a wide range of Allen-Bradley accessories and can be integrated into larger control systems.
Here are some key technical specifications for the Allen-Bradley SMC-3, 150-C251NBD:
| Parameter | Specification |
| Brand & Series | Allen-Bradley, SMC-3 |
| Full Model Number | 150-C251NBD |
| Enclosure Type | Open Type (Frame) |
| Rated Operational Current (Ie) | 251 Amps |
| Rated Insulation Voltage (Ui) | 690V AC / 750V AC |
| Utilization Category | AC-3 (Squirrel Cage Motor Starting) |
| Thermal Overload Relay Setting Range | Adjustable, typically 200-251A |
| Control Voltage | Various options available (e.g., 24V DC, 110V AC, 220V AC) |
| Auxiliary Contacts | Configurable, often includes normally open and normally closed contacts |
The primary advantage of choosing this controller is the assurance of quality and reliability from a leading brand, supported by a supplier with a proven track record. For your business, this translates into reduced risk of motor failure, lower maintenance costs over the equipment's lifecycle, and minimized unplanned production stoppages. The flexibility of the open design can also lead to cost savings on the overall enclosure system when integrated into a custom panel.
Rossonix Co., Limited brings more than just a product to the table. With an annual export value in the multi-million dollar range and a presence in key markets worldwide, we have the logistical expertise and network to support your supply chain needs efficiently. Our operations from major ports like Shenzhen and Hong Kong facilitate smooth and timely delivery. Our ISO 9001 and ISO 9000 certifications underpin our commitment to systematic quality management, ensuring that every Allen-Bradley SMC-3 controller we supply meets stringent standards. When you partner with us, you gain access to reliable industrial components and the support of an established trading company dedicated to serving the global B2B market. Contact us today to discuss your motor control requirements and discover how we can contribute to the efficiency and reliability of your operations.
Frequently Asked Questions (FAQ)
Q1: What does "Open Type" mean for this motor controller?
A1: "Open Type" indicates that the starter does not come in a protective enclosure. It is a frame or chassis designed to be installed inside a separate, customer-provided cabinet or enclosure that offers protection against dust, moisture, and accidental contact, as required by the application site.
Q2: Is the thermal overload relay adjustable on this model?
A2: Yes, the integrated thermal overload relay typically features an adjustable current setting range, allowing you to fine-tune the protection level to match the full-load current of the specific motor it is controlling, which is crucial for accurate protection.
Q3: Can this SMC-3 controller be used for reversing motor applications?
A3: The specific model 150-C251NBD is generally configured as a non-reversing starter. For reversing applications, a different configuration or additional contactors would be required. Please inquire for solutions tailored to reversing duties.
Q4: What control voltage options are available?
A4: Allen-Bradley SMC starters often support multiple standard control voltages. Common options include 24V DC, 110-120V AC, and 220-240V AC. The exact available coil voltage for a specific unit can be confirmed upon request.
Q5: Do you provide the mounting hardware and wiring diagrams?
A5: The product typically includes necessary mounting hardware. Comprehensive wiring diagrams and installation manuals are available from the manufacturer and can be supplied to facilitate correct installation and integration.
Q6: What is the lead time for this product?
A6: Lead times can vary based on stock availability and order quantity. As an established trader with access to multiple supply channels, we strive to offer competitive lead times. Please contact us with your quantity requirements for a precise delivery estimate.
Q7: Is this a genuine Allen-Bradley product?
A7: Yes, Rossonix Co., Limited supplies only authentic Allen-Bradley products sourced through reliable channels. We stand behind the authenticity and quality of all components we offer.
Q8: What are the main application industries for this controller?
A8: This 251A motor controller is suitable for heavy industries such as material handling, water/wastewater treatment, mining, HVAC systems for large buildings, and any application involving the control of large three-phase induction motors.
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