ABB | T5N400TW-4 | Circuit Breaker | 400A | 4-Pole | 600V

ABB T5N400TW-4 is a high-capacity circuit breaker designed to protect industrial power systems with precision. This 400A, 4-pole unit delivers reliable isolation for demanding electrical distributions at up to 600V, making it an ideal choice for maintenance, retrofit, and replacement projects where exact specifications matter.

• Amperage: 400A
• Poles: 4-Pole
• Voltage: 600V

Important: Confirm fit and ratings before ordering. The part number T5N400TW-4 is the best reference for compatibility with your panel, switchgear, or downstream equipment.

Why this ABB breaker stands out for upgrades and servicing

Unlike generic substitutes, the T5N400TW-4 is engineered to align with ABB protection standards, offering predictable performance within your existing protection scheme. When you’re upgrading aging gear or performing a retrofit, this unit minimizes wiring changes and reduces downtime by matching the footprint and fundamental characteristics you already rely on.

• Maintenance and retrofit: swap in the exact part to preserve protection coordination and minimize surprises during commissioning.
• Replacement for legacy ABB installations: ensures a like-for-like fit in panels and enclosures that expect ABB components.
• Service readiness: keep a ready-to-go spare on hand for critical feeders and downtime-sensitive applications.

Buying guidance and practical tips

To ensure a seamless match, use the part number T5N400TW-4 when cross-checking with equipment manuals, catalogs, and labeling on your panel. Even with identical ratings, physical footprint, mounting style, and terminal configuration must align with the equipment you’re servicing.

Who benefits most

Maintenance teams, panel retrofit projects, and facility managers handling industrial power distribution at 600V will find this ABB breaker well-suited for reliable, like-for-like protection. It’s particularly valuable for systems that require a 400A, 4-pole protection strategy with clear, ABB-standard performance expectations.

Choosing ABB T5N400TW-4 means prioritizing precise compatibility, dependable protection, and long-term support for your installation. If you’re upgrading or replacing a similar ABB unit, this part number serves as your best reference for a precise, dependable swap.