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Allen Bradley 140G MCB 140G-M5X4

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140G-M5X4

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The 140G-M5X4 is an 800 Amp molded case circuit breaker from Allen-Bradley, featuring a robust M frame design. With a 50 kA interrupting rating, it is built to protect electrical components effectively.

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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for 140G-M5X4

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140G MCB
Part Number140G-M5X4
Weight12.00 lbs (5.44 kg)
FrameM
Amps800
Interrupting Rating50 kA
Protection TypeBreaker Frame
Poles4
Current RangeFrame Only
Rated Insulation Voltage1000V
Rated Impulse Withstand Voltage8 kV
Mechanical Life120 Operations/hr.
Electrical Life60 Operations/hr.
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The Allen-Bradley 140G-M5X4 is a durable molded case circuit breaker, ideal for significant electrical systems where reliable protection is necessary. This model handles up to 800 Amps and is categorized under the M frame type. It features a 50 kA interrupting rating, ensuring robust circuit protection against overloads and short circuits.

This device operates with four poles, making it versatile in various configurations. It is specifically designed for applications requiring a frame only current range. The rated insulation voltage can reach 1000 volts, affirming its suitability for high-voltage environments. Additionally, it can withstand impulse voltages of 8 kV, securing the system during transient events.

Weighing in at 33.29 pounds, the 140G-M5X4 is manageable for installation and integration. It provides a mechanical lifespan of 120 operations per hour, indicating its durability and suitability for continuous operations. The electrical lifespan is rated at 60 operations per hour, reflecting dependable performance in demanding applications. Overall, the 140G-M5X4 circuit breaker stands as a reliable component in advanced electrical systems.

Revision Part #Also known as
140G-M5X4 Ser A140G-M5X4/A, Series A, Rev A
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