General Electric | TJJ436400WL | Circuit Breaker | 400A | 3-Pole | 600V

The GE TJJ436400WL circuit breaker is a robust, purpose-built protection device engineered for 600V three‑phase systems. With a 400A rating and a 3‑pole configuration, this General Electric component is designed to safeguard feeders and distribution panels in demanding commercial and industrial environments. Whether you’re performing maintenance, a retrofit, or a replacement, this part delivers dependable interruption and orderly shutdown when faults occur, helping minimize downtime and protect valuable equipment.

Key specifications

• Amperage: 400A
• Poles: 3‑Pole
• Voltage: 600V
• Part number: TJJ436400WL

Why this 400A, 3‑pole, 600V breaker is the right choice

Designed for reliability in demanding setups, the TJJ436400WL provides coordinated protection across all three phases. It’s the preferred choice for projects where exact GE specifications matter, offering a compatible path for upgrading or refreshing existing installations without compromising system integrity. The three‑pole design ensures balanced protection across phases, which is crucial for preventing fault propagation in three‑phase motors and feeders.

Who should consider it

• Facilities conducting maintenance on GE‑based electrical systems that require a precise replacement part.
• Retrofits where a 400A, 3‑pole, 600V GE breaker is specified to match original equipment ratings.
• Projects prioritizing verified compatibility by part number for panelboards and distribution gear that rely on GE components.

Installation and compatibility notes

Before ordering, confirm fit and ratings against your equipment. The part number—TJJ436400WL—serves as the best reference for compatibility. Installation should be performed by a qualified electrician in accordance with all applicable electrical codes and manufacturer guidelines to ensure safe operation and correct integration with existing panels or switchgear.

Practical considerations and best practices

• Verify that your system is designed for 600V and three-phase operation to match the breaker’s specifications.
• Use the part number as the primary reference to ensure an exact match with GE equipment and panel requirements.
• Keep a record of the part number for future maintenance, ordering, and cross‑reference within your electrical asset management program.
• Coordinate with your electrical team to plan replacement during planned maintenance windows to minimize disruption.
• Store and handle the breaker in a clean, dry environment to preserve performance and longevity upon installation.

For professionals upgrading or maintaining GE installations, the TJJ436400WL stands out as a precise, dependable choice that aligns with the need for consistent protection, predictable behavior during faults, and seamless compatibility with existing GE panels and distribution systems.