Description
Overview
The Allen-Bradley 140MG-J8E-D15 Motor Protection Circuit Breaker (MPCB) represents a strong balance of durability, precision, and intelligent protection. Designed for J Frame applications, this breaker delivers solid performance for medium-to-high current systems that demand consistency and fast fault clearing. Built by Rockwell Automation, it ensures superior motor control, dependable safety, and seamless integration into your industrial setup.
Performance and Protection
With a rated current of 150A, this breaker provides exceptional control and protection in heavy-duty circuits. It features adjustable thermal and fixed magnetic trip elements, giving operators fine-tuned flexibility for a variety of motor load conditions. Additionally, the short-circuit protection range of 35–65 kA at 480V ensures reliable operation even under demanding fault conditions. Because it offers both AC and DC ratings (250V AC/DC), it adapts effortlessly to hybrid or multi-system installations.
Integration and Design
Compact yet robust, the 140MG-J8E-D15 is built for easy installation and long-term reliability. Though designed without bus bar mounting, it integrates smoothly with existing Allen-Bradley MCC systems, making upgrades or replacements straightforward. Its three-pole configuration provides balanced load protection and simplifies wiring, while its front-access controls enable quick adjustments. Moreover, the thermal and magnetic trip settings help prevent nuisance tripping and maintain consistent uptime.
Key Advantages
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Rated Current: 150A
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Trip Type: Adjustable Thermal / Fixed Magnetic
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Short-Circuit Protection: 35–65 kA @ 480V
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Rated Voltage: 250V AC/DC
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3-Pole configuration for stable performance
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Designed for J Frame applications
Conclusion
In summary, the Allen-Bradley 140MG-J8E-D15 delivers dependable motor protection, precise adjustment options, and superior fault handling. With its rugged design and advanced safety features, it stands as a reliable solution for maintaining operational continuity and protecting vital industrial systems.
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