General Electric TB4STA8R 800A 3-Pole 240 V Circuit Breaker

Meet the General Electric TB4STA8R 800A 3-Pole 240V Circuit Breaker—the rugged protection your largest 3‑phase loads rely on. Built to interrupt current quickly and safely, this breaker defends feeders, motors, and distribution panels from overloads and faults in demanding 240V systems.

Key features that matter in real-world use

• High-capacity protection: 800 A current rating provides robust protection for heavy-duty 3‑phase feeders commonly found in industrial and large commercial environments.
• Three-pole design: Optimized for safeguarding 3‑phase circuits, helping maintain balanced loading and reducing the risk of phase-related faults.
• 240V operation: Specifically suited for 240V distribution setups, delivering reliable overcurrent protection where it’s most needed.
• General Electric reliability: Part of GE’s circuit protection lineup, designed for consistent performance in installation environments that demand durability and predictable trip behavior.

Ideal applications

• Main or feeder protection in large 3‑phase service panels and industrial distribution boards.
• Protection for substantial 240V motor circuits and heavy equipment within manufacturing facilities, warehouses, and processing plants.
• Backup or main protection for commercial facilities with high electrical demand and critical uptime requirements.

Technical specifications

• Part Number: TB4STA8R
• Current rating: 800 A
• Poles: 3
• Voltage rating: 240 V
• Brand: General Electric

Why choose this GE breaker?

For installations where 3‑phase reliability matters, the TB4STA8R provides decisive overcurrent protection tailored to 240V circuits. Its 3‑pole construction helps maintain phase balance, minimizing the risk of uneven loading that can stress conductors and downstream equipment. By selecting a dedicated 800 A GE breaker, you can design safer, more resilient electrical systems that reduce unplanned downtime and help protect expensive machinery.

Installation and care tips

• Ensure the breaker is compatible with your GE panels and follows the manufacturer’s mounting and torque specifications.
• Use only qualified electrical personnel for installation and evaluation of system protection requirements.
• Match the breaker's trip characteristics to your load profile to achieve reliable protection without nuisance tripping.