SJK3C400 | Circuit Breaker | 400A | 3-Pole | 600V

Meet the SJK3C400 Industrial Circuit Breaker—a rugged, dependable protective device built for demanding electrical systems. With a 3-pole configuration and a 400A rating at up to 600V, this breaker is designed to guard heavy-load applications while simplifying maintenance, retrofit, and replacement projects where exact specifications matter.

Key specifications

• Amperage: 400A
• Poles: 3-Pole
• Voltage: 600V
• Part number: SJK3C400

Why the SJK3C400 stands out

• Built for industrial environments that demand reliable overcurrent protection across three conductors.
• 3-Pole design ensures coordinated disconnection of all phases, helping to reduce risk during fault conditions.
• Part number accuracy (SJK3C400) provides confidence when sourcing a replacement or retrofit to match existing panels.
• Streamlines maintenance workflows by offering a clearly defined spec that aligns with compatibility checks and inventory planning.

Ideal use cases

• Maintenance and service work on 3-phase, 600V distribution networks.
• Retrofit projects where upgrading or replacing aging protection devices requires exact spec matching.
• New installations that call for a robust 3-Pole, 400A, 600V circuit breaker to protect heavy-load circuits.

Fit, compatibility, and practical tips

Notes: Always confirm fit and ratings before ordering. The part number is the most reliable reference for compatibility with your panel or switchgear. When planning a replacement, verify that the panel’s labeling and ducting accommodate a 3-Pole, 600V device and that the 400A rating aligns with the protected load. For best results, handle installation with the system powered down and follow your equipment manufacturer’s guidelines to ensure safe, proper mounting and connection.