Allen Bradley 140G-N6H3-E12 - 1200A, 3-Pole, Circuit Breaker

Meet the Allen Bradley 140G-N6H3-E12—a rugged, industrial-grade 1200A, 3-pole circuit breaker engineered for demanding power systems. Designed to deliver dependable overcurrent protection in panelboards, switchboards, and control panels, it helps you safeguard equipment, increase uptime, and simplify maintenance in environments where reliability matters most.

This breaker is purpose-built for three-phase power distribution, providing balanced protection across all live lines and helping prevent damage from short circuits, overloads, and unintended faults. Its three-pole configuration makes it ideal for large industrial motors, conveyors, presses, and other high-current machinery where precise interruption and quick fault isolation are critical.

Key specifications

• Current rating: 1200A
• Poles: 3-Pole
• Breaker type: Circuit Breaker
• Applications: Panelboards, Switchboards, and Control Panels
• Ideal for: Industrial, Commercial, and OEM environments requiring reliable protection in distribution panels and motor control centers

What sets this breaker apart

• High-current capability: With a 1200A rating, it accommodates substantial load centers and large-motor applications, delivering secure interruption when faults occur.
• Three-phase protection: Optimized for balanced 3-phase systems, reducing the risk of uneven fault currents and ensuring coordinated shutdown of affected circuits.
• Industrial-grade reliability: Built to withstand the rigors of continuous operation in demanding environments, aligning with the durability expectations of Allen-Bradley equipment.
• Flexible integration: Suited for standard installation in panelboards, switchboards, and control panels across industrial, commercial, and OEM projects.

Best-fit scenarios

• Large motor control centers and heavy machinery lines where high-current protection is essential.
• Critical process environments that require rapid fault isolation to minimize downtime.
• OEM equipment and retrofits needing robust, proven three-phase protection in distribution architectures.

Practical installation and operation tips

• Ensure coordination with downstream protection and proper enclosure compatibility for safe, compliant operation.
• Follow manufacturer installation guidelines to secure terminations and maintain reliable contact under load.
• Plan for periodic inspection and testing as part of your preventive maintenance routine to confirm uninterrupted performance.

With the Allen Bradley 140G-N6H3-E12, you’re choosing a trusted, high-capacity solution for protecting critical power systems. It’s more than a breaker—it’s a cornerstone of safety, reliability, and efficiency in your industrial electrical network.