Eaton | DA3400Y | Circuit Breaker | 400A | 3-Pole | 240V

Eaton DA3400Y Circuit Breaker — a rugged 400A, 3-pole device designed for 240V systems that demand reliable, code-compliant protection. Built for maintenance, retrofit, and replacement projects, the DA3400Y helps you keep critical electrical circuits safeguarded with minimal downtime and hassle.

• Amperage: 400A
• Poles: 3-Pole
• Voltage: 240V
• Intended use: ideal for maintenance, retrofit, and replacement where exact specs are required

The DA3400Y is a purpose-built replacement part that aligns with specific panel configurations. When you need to match existing equipment exactly, this Eaton circuit breaker provides a straightforward, reliable fit that preserves protection settings and system integrity. Its three-pole design is suited for distributing protection across three hot lines in 240V networks, supporting safe operation in appropriate industrial or commercial environments.

Why choose the DA3400Y for your panel? It’s more than a generic breaker: it’s a standard-reference replacement that reduces uncertainty during upgrades. By staying within the exact amperage, pole count, and voltage, you minimize compatibility risks and streamline installation in Eaton-compatible panels.

• Use cases: maintenance of existing protection schemes, retrofit projects upgrading to a 400A, 3-pole 240V protection plan, and straightforward replacement where the DA3400Y is the best compatibility reference.
• Ideal for: facilities with Eaton electrical distribution equipment seeking dependable, compatible protection without panel modifications.
• Practical tip: Always confirm fit and ratings against the panel’s documentation before ordering—the DA3400Y part number is the best reference for ensuring compatibility.