Siemens NGB2B100B - 100 A, 600 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Siemens NGB2B100B is a 100 A, 600 V, 2-pole bolt-on molded case circuit breaker designed to deliver reliable branch-circuit overcurrent and short-circuit protection in panelboards and load centers. Built to integrate with matching OEM equipment, it helps keep electrical systems safe and compliant.

Key features that matter in real-world electrical work:

• Secure bolt-on mounting: provides a rigid, vibration-resistant connection to the bus, reducing movement that can degrade performance in busy service environments.
• Thermal-magnetic trip unit: combines precise thermal protection with fast magnetic response to deliver stable protection across a wide load spectrum, minimizing nuisance trips during startup or surge conditions.
• 2-pole design for coordinated protection: ensures simultaneous interruption on both hot legs, simplifying disconnect and improving safety for multi-wire branch circuits.
• Broad compatibility: designed to be used with Siemens OEM loadcenters and panelboards, ensuring dependable fit and electrical performance.
• Versatile applications: suitable for residential, commercial, and light industrial panels where a 100 A, 600 V, bolt-on breaker is required.

Why choose this model? The NGB2B100B delivers predictable trip characteristics and a rugged mount that stands up to vibration, panel flex, and routine maintenance checks. It’s an ideal upgrade or replacement when you’re restoring an aging panel or expanding a service to support higher demand equipment.

Practical tips for use:

• Verify that your panelboard or loadcenter accepts bolt-on molded case breakers of this type and current rating.
• Ensure correct alignment with the bus bars during installation to maintain a solid mechanical connection and reliable electrical contact.
• Consult Siemens installation guidelines for torque and mounting procedures to optimize performance and longevity.

With the Siemens NGB2B100B you’re choosing a proven solution for dependable, predictable protection that aligns with standard electrical infrastructure while offering the robustness needed for busy, real-world environments.