GE TJJ436400 - 400A, 600VAC, 3-Pole, Circuit Breaker

Meet the GE TJJ436400, a rugged 400A, 600VAC three-pole circuit breaker designed for the most demanding electrical installations. Built to deliver dependable overcurrent protection in space-constrained panels, it protects three-phase systems where every phase matters for safe, reliable operation.

Three‑pole protection for true three‑phase reliability

With a dedicated 3‑pole design, this breaker provides balanced protection across all three phases, helping to prevent phase imbalance, motor faults, and cascading outages. It’s an essential component for any system where accurate, coordinated protection is critical to maintain productivity and equipment longevity.

Powerfully suited for industrial, commercial, and OEM environments

Rated for 400A and up to 600VAC, the GE TJJ436400 excels in panelboards, switchboards, and control panels where heavy loads and frequent start/stop cycles are common. Its robust construction is ideal for distribution panels and motor control centers, delivering consistent performance in environments that demand reliability and safety.

Why choose this GE circuit breaker

• High‑capacity protection: 400A current rating supports large loads and multiple circuits without compromising safety.
• Three‑phase compatibility: Optimized for three‑phase power, ensuring balanced protection across all lines.
• Broad voltage applicability: Up to 600VAC, suitable for industrial distribution and motor control applications.
• Versatile installation: Designed for panelboards, switchboards, and control panels, providing flexible integration into existing systems.
• OEM‑friendly potential: A dependable choice for equipment manufacturers integrating robust overcurrent protection into new builds.

Practical use cases and scenarios

• Protecting large three‑phase motors and drives in manufacturing lines and HVAC systems.
• Integrating into power distribution panels within commercial facilities to safeguard critical loads.
• Specifying in OEM equipment where durable, high‑amp protection is required for reliability and uptime.
• Retrofits in switchboards where upgrading protection without expanding footprint is needed.

Key specifications at a glance

• Current rating: 400A
• Voltage rating: 600VAC
• Poles: 3‑Pole
• Type: Circuit Breaker

Installation and operational considerations

For best results, install in panelboards and switchboards designed to accommodate three‑pole breakers and three‑phase circuits. Regularly inspect connections and mounting hardware to maintain optimal trip performance and mechanical integrity, and follow standard safety procedures when integrating into existing electrical gear.