140G-K6X3

Overview of Allen Bradley 140G-K6X3

The Allen Bradley 140G-K6X3 is a high-capacity molded case circuit breaker frame engineered for use in demanding industrial power systems. This 400A, 3-pole K-frame model is designed to provide reliable circuit protection against overloads and short circuits, ensuring safe power distribution for large electrical installations. The 140G-K6X3 supports a breaking capacity of up to 70kA at 415V (IEC), meeting global standards for industrial safety and compliance, including UL489, CSA 22.2 No. 5, and IEC 60947-2. It features both thermal magnetic and electronic protection options within a compact, panel-mountable form factor. This device is suitable for integration into control panels where high interrupting capacity, flexible installation, and long-term reliability are required for system availability and personnel safety.

Key Features of Allen Bradley 140G-K6X3

• 400A rated current in a compact K-frame
• 70kA IEC breaking capacity at 415V
• Thermal magnetic or electronic protection trip units
• Full standards compliance: UL489, CSA 22.2 No. 5, IEC 60947-2
• 3-pole configuration suitable for global three-phase applications
• Frame-only adjustment for flexible trip unit selection
• Quick, secure panel mounting with integrated accessories support

Technical Specs of 140G-K6X3

• Catalog Number: 140G-K6X3
• Rated Current: 400A
• Breaking Capacity: 70kA @ 415V IEC, 65kA @ 480V
• Number of Poles: 3
• Protection: Thermal Magnetic and Electronic (selectable)
• Standards: UL489, CSA 22.2 No. 5, IEC 60947-2
• Frame Type: K-frame, frame-only (trip unit ordered separately)
• Panel Mounting, Not Repairable
• Dimensions (H x W x L): 27.3 cm x 28.1 cm x 32.1 cm
• Weight: 3.75 kg

Applications / Use Case

Allen Bradley 140G-K6X3 is widely applied in industrial and commercial electrical distribution systems requiring high-current, high-interrupt protection. Common use cases include motor control centers (MCCs), main switchboards, and large machine panels in manufacturing, processing plants, water treatment facilities, and utility substations. The frame's high breaking capacity makes it suitable for critical infrastructure where maximum uptime and safety are essential. This frame's flexible trip unit options support varied motor and feeder protection schemes, allowing for customized coordination and selectivity in complex installations. Engineers value its compliance with international standards and straightforward integration into new or retrofit projects, ensuring robust short-circuit and overload protection for mission-critical loads.

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