General Electric | TB43400AF14 | Circuit Breaker | 400A | 3-Pole | 600V | Bolt-On

Meet the General Electric TB43400AF14 Circuit Breaker — a purpose-built protective device designed for demanding electrical systems where reliability and precise current control matter. This 400A, 3-pole, 600V bolt-on breaker is engineered to handle high-load three-phase applications with ease, delivering dependable interruption during fault conditions to safeguard equipment and personnel.

Designed for retrofit, maintenance, and replacement

When upgrading or replacing a panel, you need a part that matches the exact specs. The TB43400AF14 is the genuine GE solution designed for compatibility with GE panels and systems that require 400A, 3-pole, 600V bolt-on protection. Use the part number TB43400AF14 as your strongest reference for fit and ratings, and verify the application against your panel documentation before ordering.

Key specifications

• Amperage: 400 A
• Poles: 3-Pole
• Voltage rating: 600 V
• Mounting: Bolt-On
• Part number: TB43400AF14

Why this GE circuit breaker stands out

This General Electric breaker offers robust performance for critical electrical infrastructure. The 3-pole configuration is ideal for three-phase systems common in industrial settings, data centers, and large commercial installations, providing synchronized protection across all phases. The bolt-on mounting design simplifies installation and serviceability, helping electricians complete replacements or retrofits with less downtime and a secure, vibration-resistant connection.

Ideal use cases

• Retrofit projects in existing GE panels that require 400A, 3-pole, 600V protection
• Replacement during routine maintenance to restore full-rated protection
• New installations where a reliable, compatible GE component is needed for high-current, three-phase circuits

Installation and compatibility tips

To ensure reliable performance, confirm fit and ratings against your panel’s documentation. The TB43400AF14 is the best compatibility reference for systems needing this exact specification. When installing, power down the equipment, follow all safety protocols, and use proper mounting hardware and torque as recommended by your organization’s electrical standards. If your panel requires a specific GE series beyond this part, verify compatibility before purchasing to avoid delays or mismatches.