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Allen-Bradley 140MG-G8P-C50 Motor Protection Circuit Breaker

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Allen-Bradley 140MG-G8P-C50

by Allen-Bradley

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OverviewThe Allen-Bradley 140MG-G8P-C50 Motor Protection Circuit Protector (MCP) delivers robust safeguarding for industrial motors against damaging short circuits and electrical faults. This essential component boasts a substantial 50A current rating and is housed within a compact, durable G Frame, making it an ideal choice for a wide array of demanding industrial environments. With an impressive interrupting capacity ranging from 35kA to 65kA at 480V, the 140MG-G8P-C50 ensures exceptional circuit protection, even in the most high-fault applications. Designed specifically for magnetic-only protection, this unit is perfectly suited for installations where thermal overload functions are managed by a separate device, offering flexible and comprehensive motor protection strategies.Key Features 50A Rated Current: Optimized for a diverse range of motor protection applications, handling substantial electrical loads with ease. G Frame Design: Offers a compact footprint and exceptional durability, ensuring reliable operation in harsh industrial settings. High Interrupting Capacity (35-65kA at 480V): Provides enhanced fault protection against severe short circuits, minimizing downtime and equipment damage. Magnetic-Only Protection (MCP): Rapidly detects and clears short circuits, effectively preventing motor damage without thermal overload tripping. Outstanding Industrial Performance: Built with high-quality materials and stringent manufacturing standards for consistent operation in challenging conditions. Efficient Space Utilization: Its compact design allows for optimized panel layouts and easier integration into existing systems. Allen-Bradley Quality: Trust in a leading brand known for its dependable and high-performance industrial control components. Technical Specifications Model: 140MG-G8P-C50 Series: 140MG Motor Protection Circuit Protector Frame Type: G Frame Rated Current: 50A Interrupting Capacity: 35-65kA at 480V Protection Type: Magnetic-Only (MCP) Applications Comprehensive industrial motor protection and precise control systems. Integration into electrical panels and advanced switchgear systems. Critical safeguarding for heavy-duty manufacturing and industrial automation equipment. High-fault current protection within motor circuits, enhancing system reliability. Applications requiring dedicated short-circuit protection with external overload management. Modernizing existing electrical infrastructures with reliable circuit protection. Why Choose Superior Short-Circuit Protection: Provides high-speed and reliable short-circuit fault clearing, crucial for motor longevity. Robust Interrupting Capacity: Capable of handling significant fault currents, ensuring continuous operation and safety in demanding environments. Durable G Frame Construction: Guarantees enduring performance and resilience against the rigors of industrial settings. Optimized for Specific Needs: Magnetic-only protection offers flexibility when integrating with separate thermal overload solutions. Seamless Integration: Designed for easy installation and compatibility within various industrial electrical systems. Reduced Downtime: Rapid fault isolation minimizes production interruptions and associated costs. Order NowEnhance the reliability and safety of your industrial motor applications with the Allen-Bradley 140MG-G8P-C50 Motor Protection Circuit Protector. Invest in superior protection and secure your operations today.FAQWhat is the primary function of the Allen-Bradley 140MG-G8P-C50?The primary function of this device is to provide robust protection for industrial motors against short circuits and electrical faults, ensuring system integrity and motor longevity.What is the current rating of this motor protection circuit breaker?The Allen-Bradley 140MG-G8P-C50 has a rated current of 50A.Does this unit provide thermal overload protection?No, this model offers magnetic-only protection (MCP), meaning thermal overload protection is expected to be managed by a separate device in the system.What is the interrupting capacity of the 140MG-G8P-C50?It has an impressive interrupting capacity ranging from 35kA to 65kA at 480V.What frame type is this device?The 140MG-G8P-C50 features a compact and durable G Frame design.

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PRODUCT DETAILS

Allen-Bradley 140MG-G8P-C50

Overview

This is a genuine Allen-Bradley component. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.

Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.

Key Features

  • Genuine Allen-Bradley catalog part
  • Tested before shipment
  • Backed by PalmPartsSolution warranty
  • Cross-reference and revision assistance available
  • Compatible with the broader Allen-Bradley automation ecosystem

Compatibility

When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Allen-Bradley equipment. Where applicable, confirm:

  • Input/output voltage and current rating
  • Communication protocol and network role
  • Mounting form factor and footprint
  • Operating temperature, humidity, and IP rating
  • Required certifications (UL, CE, ATEX, marine, etc.)

Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.

Replacement Information

Three ways to source this part through PalmPartsSolution:

  1. Exact replacement — same Allen-Bradley catalog number, new or refurbished, tested and warrantied
  2. Form-fit-function equivalent — alternate revision or build that drops in without code changes
  3. Engineered migration — current-generation Allen-Bradley platform with documented conversion notes

Contact our engineering team if you need help choosing between these tracks.

Technical Specifications

  • Model: 140MG-G8P-C50
  • Series: 140MG Motor Protection Circuit Protector
  • Frame Type: G Frame
  • Rated Current: 50A
  • Interrupting Capacity: 35-65kA at 480V
  • Protection Type: Magnetic-Only (MCP)

Applications

  • Comprehensive industrial motor protection and precise control systems.
  • Integration into electrical panels and advanced switchgear systems.
  • Critical safeguarding for heavy-duty manufacturing and industrial automation equipment.
  • High-fault current protection within motor circuits, enhancing system reliability.
  • Applications requiring dedicated short-circuit protection with external overload management.
  • Modernizing existing electrical infrastructures with reliable circuit protection.

Why Choose the 140MG-G8P-C50?

  • Superior Short-Circuit Protection: Provides high-speed and reliable short-circuit fault clearing, crucial for motor longevity.
  • Robust Interrupting Capacity: Capable of handling significant fault currents, ensuring continuous operation and safety in demanding environments.
  • Durable G Frame Construction: Guarantees enduring performance and resilience against the rigors of industrial settings.
  • Optimized for Specific Needs: Magnetic-only protection offers flexibility when integrating with separate thermal overload solutions.
  • Seamless Integration: Designed for easy installation and compatibility within various industrial electrical systems.
  • Reduced Downtime: Rapid fault isolation minimizes production interruptions and associated costs.

Availability & Shipping

  • In stock: 140MG-G8P-C50 ready for immediate dispatch from our Florida warehouse.
  • Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
  • Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
  • Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
  • Buy with confidence: Every 140MG-G8P-C50 ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Allen-Bradley

The primary function of this device is to provide robust protection for industrial motors against short circuits and electrical faults, ensuring system integrity and motor longevity.

Machine down? We ship parts the same day.

New, surplus, and refurbished Allen-Bradley inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.

CUSTOMER REVIEWS

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PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.

Product Condition & Firmware

All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.

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