General Electric | TJ400J | Circuit Breaker | 400A | 3-Pole | 600V

General Electric TJ400J Circuit Breaker — 400A, 3-Pole, 600V

Meet the trusted protection your three-phase electrical system deserves. The General Electric TJ400J circuit breaker is designed for maintenance, retrofit, and replacement projects where exact specifications matter. Built to handle demanding industrial or commercial environments, this 3-pole unit provides reliable, coordinated interruption across all phases, helping safeguard equipment and personnel.

Key specifications

• Amperage: 400 A
• Pole configuration: 3-Pole
• Voltage rating: 600 V
• Part reference: TJ400J — best compatibility reference for your setup

Why this exact part matters: When your panels, bus assemblies, or switchgear were specified around the TJ400J, using the exact TJ400J part ensures mechanical fit, proper trip behavior, and alignment with the original protection scheme. It minimizes downtime and avoids compatibility surprises during replacement or retrofits.

Who should consider this breaker

• Facilities managers, electricians, and maintenance teams working with three-phase distribution who need a precise 400A, 3-pole, 600V device.
• Projects involving panel retrofits or replacements where the TJ400J is the recommended reference for compatibility.
• Situations requiring quick, reliable replacement to restore protective coordination in industrial equipment, manufacturing lines, or large commercial systems.

Use cases and practical scenarios

• Replacing a failed breaker in existing GE panels that specify the TJ400J for proper fitment and tripping characteristics.
• Upgrading protection in a three-phase distribution path where a 400A capacity is required to safely handle load growth.
• Retrofit projects aiming to maintain consistent protection curves and electrical clearances with the original gear.

Installation notes and best practices

• Always confirm fit and ratings before ordering to ensure compatibility with your panel or switchgear.
• Maintain proper lockout/tagout procedures during replacement to protect personnel and equipment.
• Keep a spare TJ400J on hand for planned maintenance or unplanned outages to minimize downtime.

Compared to alternatives, the TJ400J delivers exact-match compatibility for systems designed around this part number, reducing the guesswork in selection and helping you maintain a robust, reliable protection scheme. For installations and repairs where spec accuracy matters most, choose the General Electric TJ400J — a dependable choice for 400A, 3-pole, 600V protection.