Description
Product Name : 140MG-H8E Allen Braley Programmable controller
Product details:
The Allen-Bradley 140MG-H8E is a high-performance Motor Protection Circuit Breaker (MPCB) from the PowerFlex and Bulletin 140MG series by Rockwell Automation. These devices are specifically designed to provide essential protection for motor circuits, combining the functions of a disconnect switch, short-circuit protection, and overcurrent protection into a single unit.
Product Description
The 140MG-H8E is an H-Frame molded case circuit breaker (MCCB) optimized for motor protection. Unlike standard thermal-magnetic breakers, the “H8E” configuration typically features an Electronic Trip Unit. This allows for more precise settings, better coordination with motor starting characteristics, and enhanced protection against phase loss or imbalance.
Technical Parameters
While specific ratings can vary based on the sub-series, the general specifications for the H-Frame 140MG series include:
| Feature | Specification |
| Frame Size | H-Frame (up to 150A/160A) |
| Trip Unit Type | Electronic (typically featuring adjustable settings) |
| Breaking Capacity | High-performance (Interrupting ratings usually 35kA–100kA at 480V) |
| Voltage Rating | Up to 600V AC (UL) / 690V AC (IEC) |
| Current Range | Adjustable within the frame rating (e.g., up to 150A) |
| Poles | 3-Pole |
| Standards | UL 489, CSA, CE marked, CCC |
Product Advantages
- Precision Protection: The electronic trip unit offers a much tighter tolerance than traditional thermal units, reducing the risk of nuisance tripping while ensuring the motor is protected from overheating.
- Space Saving: By integrating multiple protection functions (short circuit and overload) into one device, it reduces the footprint in the control panel.
- Modular Design: Supports a wide range of internal accessories, such as auxiliary contacts, shunt trips, and undervoltage releases, which can be installed easily.
- Global Compliance: Meets international standards, making it suitable for machines exported to global markets.
- Enhanced Reliability: Designed for heavy-duty industrial cycles, ensuring long-term operational stability.
Key Precautions & Maintenance
- Correct Sizing: Always ensure the breaker is sized according to the Full Load Amps (FLA) of the motor and the National Electrical Code (NEC) or local standards.
- Setting Calibration: Since this unit features an electronic trip, it is vital to correctly set the rotary switches or digital parameters to match the motor’s specific startup curve.
- Heat Dissipation: Ensure the control cabinet has adequate ventilation; excessive ambient heat can affect the performance of electronic components.
- Wiring Torque: Terminal screws must be torqued to the manufacturer’s specifications to prevent arc flashes or overheating at the connection points.
Product Applications
The 140MG-H8E is primarily used in Motor Control Centers (MCC) and distributed control panels across various industries:
- Manufacturing: Conveyor systems, fans, pumps, and compressors.
- Oil & Gas: Protecting large-scale pumping and extraction equipment.
- Water Treatment: Heavy-duty motor protection for filtration and distribution pumps.
- HVAC: Large commercial air handling units and chillers.
- OEM Machinery: Providing a compact, reliable protection solution for complex industrial machinery.
Advantages: Foxboro, OVATION, TRICONEX, Allen-Bradley, ABB, Motorola, Siemens Moore, Ge Fanuc, Woodward, Bently Nevada and other major import brands!
We have the same series of models in stock. If you don’t find the model you need, please contact us and we will provide you with an official quotation！
Colour：new Warranty: 12 months
Lead Time：3-day working day Country of origin: Sweden
Price: Please contact us Product weight：0.515kg
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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