GE TJJ436300 - 300 A, 600 V, 3-Pole Circuit Breaker | AmpState

Introducing the GE TJJ436300, a 300-amp, 600-volt, 3-pole molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection for panelboards and loadcenters. From AmpState, this unit combines a compact footprint with robust protection, making it a practical choice for modern electrical installations where space and reliability matter.

Why the GE TJJ436300 stands out

• Compact molded case design maximizes panel space without compromising protection, ideal for tight electrical enclosures and upgraded panels.
• Thermal-magnetic trip unit provides stable, repeatable protection across a range of operating temperatures and electrical conditions, helping prevent nuisance trips while safeguarding equipment.
• 3-pole configuration supports balanced protection for three-phase systems, making it suitable for commercial and light industrial applications as well as residential three-phase setups.
• 600V rating paired with a high 300A current rating ensures reliable performance for heavy-load circuits and feeders.
• OEM loadcenter and panelboard compatibility designed to work with matching GE and OEM panel components for straightforward upgrades and replacements.
• Versatile application appropriate for residential, commercial, and light industrial environments requiring strong protection for branch circuits.

Technical snapshot

• Manufacturer: GE
• Part Number: TJJ436300
• 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

Compatibility and installation tips

This breaker is designed to pair with matching OEM loadcenters and panelboards, helping you maintain consistent protection and electrical performance across your system. When selecting this unit, confirm that the panel’s bus rating and conductor sizing align with a 300A, 600V, 3-pole configuration. For new installations or panel upgrades, ensure proper mounting hardware and adhere to local electrical codes. If you’re replacing an existing breaker, verify the form factor and trip characteristics to ensure a seamless, reliable swap.

Ideal use cases

• Upgrading residential service panels that require heavy-duty protection for main feeders or large branch circuits.
• Commercial subpanels feeding high-load equipment where three-phase protection is essential.
• Light industrial installations needing robust, space-efficient protection in compact panel enclosures.

With the GE TJJ436300, you gain a proven, space-conscious solution that delivers dependable overcurrent and short-circuit protection, backed by GE’s legacy of reliability and seamless compatibility with OEM panel systems. It’s the smart, targeted choice when you need strong performance in a compact, 3-pole package.