Siemens | SJD69400NTH | Circuit Breaker | 400A | 3-Pole | 600V

When reliability matters for three-phase power distribution, the Siemens SJD69400NTH Circuit Breaker delivers enduring protection. This 400A, 3-pole unit is engineered for demanding commercial and industrial panels, guarding circuits against overloads and short circuits with Siemens’ renowned precision and quality. It’s the OEM reference you need for maintenance, retrofit, or replacement projects that require exact specifications.

Key specifications at a glance

• Amperage: 400A
• Poles: 3-Pole (three-phase)
• Voltage: 600V
• Part number: SJD69400NTH

Why this Siemens breaker stands out

• OEM compatibility: Designed to align perfectly with Siemens panels, reducing fit issues and ensuring consistent performance.
• Exact spec match: The SJD69400NTH is the precise reference for applications demanding a 400A, 3-pole, 600V protection device.
• Durable construction for industrial environments: Built to withstand the rigors of ongoing operation in maintenance, retrofit, and replacement scenarios.

Ideal use cases

• Maintenance: Replace worn or failed breakers with an authentic Siemens part to restore full protection quickly.
• Retrofit: Upgrade existing systems to a reliable 400A, three-phase protection solution without compromising compatibility.
• Replacement: Match the exact specifications of an existing circuit to maintain safety margins and performance.

Compatibility notes and installation tips

Before ordering, confirm fit and ratings for your panel or distribution equipment. The part number SJD69400NTH is the best reference for compatibility, helping you avoid mismatches that could affect operation. When installing, follow all manufacturer guidelines for wiring, enclosure clearance, and torque to ensure secure connections and proper tripping behavior in fault conditions.

Who this is for

Facilities managers, electrical contractors, and industrial operators who require a dependable, exact-match breaker for 400A, 3-pole, 600V circuits will find this Siemens part an ideal choice. It’s particularly well-suited for upgrade projects, panel replacements, and maintenance programs where consistent performance and precise specifications matter.

Choose the Siemens SJD69400NTH circuit breaker for confident protection of your critical three-phase loads, with the assurance that you’re using an authentic, exact-specification component designed to integrate smoothly with compatible Siemens electrical systems.