CK3400 | Circuit Breaker | 400A | 3-Pole | 600V

CK3400 Industrial Circuit Breaker — a reliable, purpose-built solution for protecting three‑phase power systems in demanding industrial environments. This 400A, 3‑pole unit is engineered to handle steady loads while providing precise overcurrent protection, helping minimize downtime and equipment wear.

Whether you’re performing routine maintenance, retrofitting a panel, or replacing a failed breaker, the CK3400 delivers the exact specifications needed to keep your electrical system safe and compliant.

Key specifications

• Amperage: 400 A
• Poles: 3‑Pole (three‑phase)
• Voltage rating: 600 V

Why this breaker is a smart choice

The CK3400 isn’t just another breaker. Its three‑pole design and 400 A capacity are crafted for robust, balanced protection of 3‑phase loads, ensuring smooth operation of motors, pumps, and heavy equipment. The most reliable reference for compatibility is the part number itself—always confirm fit and ratings against your equipment before ordering.

Practical use cases

• Maintenance swaps in aging industrial panels that require a CK3400‑level protection
• Retrofits where a three‑phase, 600 V feed powers critical machinery
• Replacement within a CK3400‑compatible lineup to minimize panel downtime

Tips for installation and maintenance

• Verify the panel’s bus configuration and ensure the CK3400 matches the enclosure’s requirements before installation.
• After installation, perform a functional test to confirm proper trip operation under simulated fault conditions.
• Keep the CK3400 part number as the primary reference for future replacements or ordering, rather than relying on appearance alone.