GE TJJ436300WL - 300 A, 600 V, 3-Pole Circuit Breaker | AmpState

Meet the GE TJJ436300WL, a 300A, 600V, 3-pole molded case circuit breaker engineered to anchor reliable branch-circuit protection in panelboards and loadcenters.

Designed for demanding environments, this breaker offers a compact footprint that frees up valuable panel space while delivering robust, dependable protection for three-phase circuits. The thermal-magnetic trip unit ensures stable, repeatable performance through a wide range of operating temperatures, reducing nuisance trips and helping maintain steady system operation during faults.

Key benefits at a glance

• Compact molded-case design maximizes panel space and simplifies retrofits in crowded panels.
• Thermal-magnetic trip provides accurate overload protection plus instantaneous short-circuit interruption.
• 3-pole configuration supports three-phase circuits and common-trip operation, ideal for balanced panel layouts.
• 600V rating suitable for higher-voltage feeder and downstream equipment in commercial or light industrial settings.
• 300A rating serves as a main disconnect or a high-current feeder, enabling scalable protection for sizeable loads.
• OEM panel compatibility designed to work with matching GE OEM loadcenters and panelboards, ensuring reliable integration.

Practical use cases

Recommended for:

• New installations in commercial spaces where a robust 3-phase protection is required.
• Upgrading subpanels or service entrances in light industrial facilities needing higher current capacity.
• Repairs or replacements in existing GE-compatible panelboards where a precise 300A, 600V, 3-pole performance is needed.

Technical snapshot

• Manufacturer: GE
• Part Number: TJJ436300WL
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 300A
• Voltage Rating: 600V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

For a seamless upgrade, pair this breaker with GE's compatible loadcenters and panelboards that share the same electrical characteristics, and follow all panel manufacturer guidelines for replacement procedures. This combination delivers predictable protection, streamlined maintenance, and long-term reliability for critical electrical infrastructure.