GE TNIA400 Circuit Breaker | AmpState

The GE TNIA400 circuit breaker is a dependable protection device designed for panelboards, load centers, and electrical distribution systems. As a member of GE’s TNIA family, the TNIA400 delivers reliable interruption control where demanding commercial and light industrial circuits need steady performance.

Why this model stands out for replacement and spares: it preserves BOM integrity by using the exact part number your system was built around. This means faster retrofits, fewer mis-orders, and consistent documentation across sites. When you stock the TNIA400, you’re equipping your maintenance teams with a direct, ready-to-install solution that minimizes downtime during critical repairs.

• Direct compatibility for BOM accuracy: Exactly matches the original GE installation when the BOM specifies TNIA400, reducing guesswork during replacements.
• Concrete use cases: Ideal for panelboard and load center upgrades, routine maintenance, and dependable spare stock for ongoing electrical distribution protection.
• Availability through AmpState: Readily available from AmpState, with support to confirm fit against your part lists and equipment specs.
• Expert compatibility support: If you’re unsure about fit, our team can help verify compatibility against your equipment model and documentation.

Specifications and scope

• Manufacturer: GE
• Part Number: TNIA400
• Product Type: Circuit Breaker
• Applications: Panelboards, Load centers, Electrical distribution

Practical benefits in real-world setups

For facilities with multiple sites, using the TNIA400 helps standardize spares and maintenance workflows. Electricians and procurement teams appreciate the clarity of a single, traceable part number across inventories, service orders, and replacement schedules. In day-to-day operations, this translates to quicker fault isolation, smoother component swaps, and a clearer path to compliance documentation.

How to proceed with confidence

If your documentation calls for the TNIA400, you’re aligned with GE’s original installation approach. If you’re uncertain about compatibility, reach out to AmpState with your panel model and BOM details, and we’ll help verify fit before you commit.