Siemens | CJD62L400L | Circuit Breaker | 400A | 2-Pole | 600V

Siemens CJD62L400L Circuit Breaker delivers dependable, high-current protection for demanding electrical distributions. With a 400A rating, a two-pole configuration, and a 600V operating capacity, this unit is built for reliability in commercial and industrial panels where precise, reliable shut-off is essential. Designed for maintenance, retrofit, and replacement projects, the CJD62L400L ensures compatibility and peace of mind when updating or expanding power distribution.

Key specifications

• Amperage: 400A
• Poles: 2-Pole
• Voltage: 600V
• Part number: CJD62L400L
• Application: maintenance, retrofit, and replacement in Siemens-compatible systems

Why this model stands out

The CJD62L400L is engineered to integrate seamlessly with existing Siemens panels and distribution gear, providing consistent trip characteristics and reliable protection for main feeders and critical circuits. Its 2-pole design ensures simultaneous interruption of both hot conductors, a crucial feature for protecting multi-wire feeders and reducing the risk of arcing during fault conditions. With a 600V rating, this breaker is suitable for a wide range of industrial and commercial applications, delivering robust performance in environments that demand steady, predictable protection.

How to ensure a perfect fit

Before ordering, verify fit and ratings using the exact part number: CJD62L400L. The best reference for compatibility is the Siemens part number itself, as it confirms amperage, pole configuration, voltage rating, and trip characteristics align with your panel and distribution needs. Keep the part number handy when cross-checking service manuals, panel labels, and equipment inventories to avoid mismatches.

Ideal use cases

• Replacing a failed or aging circuit breaker in Siemens-panel power distribution
• Upgrading feeders or main lines in commercial or light industrial installations
• Retrofit projects where exact Siemens-compatible components are required to maintain protection schemes
• Maintenance scenarios that demand a reliable, high-current 2-pole solution for 600V systems

Practical tips for installation and care

• Always follow lockout/tagout procedures and power-down protocols before handling breakers.
• Inspect mounting interfaces and bus connections for clean contact surfaces to ensure a secure, long-lasting fit.
• Verify that wiring, conductors, and terminal lugs meet the breaker’s torque specifications and conductor ratings.
• Store and transport the unit in a controlled environment to avoid moisture or contamination that could affect performance.

Designed for professionals who need precise compatibility, robust protection, and straightforward replacement in Siemens-focused electrical systems, the Siemens CJD62L400L 400A 2-Pole 600V circuit breaker is a dependable choice for maintenance, retrofit, and replacement projects. Rely on the original part number to confirm fit, and experience the confidence that comes with Siemens-quality protection for your critical power distribution.