GE TJJ436400 - 400 A, 600 V, 3-Pole Circuit Breaker | AmpState

Introducing the GE TJJ436400 — a rugged 400A, 600V, 3-pole molded case circuit breaker from AmpState's GE lineup. Built for dependable branch circuit overcurrent and short-circuit protection, it’s the reliable choice for panelboards and load centers that keep critical systems running.

• Compact molded-case design maximizes panel space, allowing you to protect high-capacity circuits without crowding the enclosure.
• Thermal-magnetic trip unit delivers stable, repeatable protection across varying loads, reducing nuisance trips while quickly reacting to genuine faults.
• Three-pole configuration provides robust three-phase protection, ideal for commercial and light industrial applications and for balanced load distribution.
• OEM panel compatibility ensures seamless replacement in matching GE loadcenters and panelboards, preserving labeling, trip characteristics, and performance.
• Versatile application suitable for residential, commercial, and light industrial environments, giving you a single solution across multiple projects.

Key specifications

• Manufacturer: GE
• Part Number: TJJ436400
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 400 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Why this GE TJJ436400 stands out: it’s designed to slot into GE’s ecosystem with precise trip curves and mechanical fit, reducing installation hurdles and ensuring predictable protection for large feeders and critical equipment. The 600V rating expands its suitability for higher-voltage panelboards, while the 3-pole layout simplifies wiring in three-phase systems and helps maintain balanced protection across your circuits.

Ideal use cases include upgrading or stocking components for large residential subpanels, commercial service panels, and light-industrial installations where high ampacity and reliable trip performance are essential. It’s also a practical choice for replacing aging breakers in GE-certified panels, helping you maintain compliance and consistent protection standards across your electrical infrastructure.

Practical setup tips: verify panel compatibility with GE loadcenters, confirm the breaker’s trip characteristics align with your existing system, and follow standard electrical safety practices during installation. With its compact design and dependable thermal-magnetic protection, the GE TJJ436400 keeps your panel organized and your circuits protected, enabling smooth operation of the systems you depend on daily.