Siemens | NGB3K100B | Circuit Breaker | 100A | 3-Pole | 600V

The Siemens NGB3K100B Circuit Breaker is a precise, purpose-built solution for protecting three-phase electrical systems. With a 100A rating and a 3-pole configuration, this breaker delivers reliable, synchronized interruption across all three conductors in 600V service environments, making it an ideal choice for maintenance, retrofit, or replacement projects where exact specifications matter. Key specifications at a glance - Amperage: 100A - Poles: 3-Pole - Voltage: 600V - Part number: NGB3K100B - Primary use: Maintenance, retrofit, and replacement where matching specs are required Why this 3-pole design matters - True three-phase protection: A 3-pole breaker simultaneously disconnects all phases, reducing the risk of partial faults and minimizing arc-related hazards in motors, compressors, and other heavy loads. - Consistent performance in industrial settings: Designed for the demands of commercial and industrial panels, ensuring predictable trip behavior when protection is needed most. Ideal use scenarios - Replacing a failed or aging breaker in three-phase distribution panels - Retrofit projects where existing equipment calls for the NGB3K100B specification - Maintenance upgrades for motor drives, HVAC equipment, or other equipment that runs on 600V three-phase power Compatibility and fit notes - Confirm fit and ratings before ordering. The best reference for compatibility is the NGB3K100B part number, matched to your panel model and voltage class. - This product is specifically aligned with 3-phase, 600V systems and 100A applications; verify your panel’s requirements to ensure a seamless replacement or upgrade. Practical guidance for installation and use - Before installation, power down the system and verify that your panel supports 100A, 3-pole, 600V protection. - When replacing an existing breaker, ensure the designation and trip characteristics align with your electrical design to maintain clear safety margins and proper disconnect timing. - Store and handle the unit per standard electrical safety practices to protect internal mechanisms and maintain reliable operation over time. With the Siemens NGB3K100B, you’re choosing a purpose-built solution that locks in a precise 100A, 3-pole, 600V protection profile, tailored for dependable performance in demanding three-phase environments. This is the dependable replacement and retrofit option that aligns with exact compatibility needs, helping you keep industrial and commercial power systems safe, efficient, and compliant.