Siemens | NGB2B100 | Circuit Breaker | 100A | 2-Pole | 600V

Siemens NGB2B100 Circuit Breaker — a purpose-built, 100 Amp, 2-pole device rated for up to 600V, designed to protect your electrical system with precision and reliability.

Whether you’re maintaining an aging panel, retrofitting to modern equipment, or replacing a failed breaker, this NGB2B100 unit slips into compatible Siemens load centers with confidence. The 2-pole design supports common 240V circuits while delivering robust protection across commercial and light industrial applications.

Key specifications

• Amperage: 100 A
• Poles: 2-Pole
• Voltage rating: 600 V

Compatibility note: Use the part number NGB2B100 as the best reference for matching fit and ratings. Verify compatibility with your panel or service equipment before ordering.

Why this Siemens breaker stands out

Made by Siemens, this breaker is engineered to align with Siemens panel architectures, reducing retrofit complexity and the risk of mismatches. The NGB2B100 is a direct-fit replacement for generations of panels that require a 100A, 2-pole, 600V protection device. Its form factor, terminal layout, and switching action are calibrated to deliver consistent trip performance when faults occur, helping you protect both equipment and personnel.

Ideal use cases

• Maintenance and service of existing Siemens panels needing precise 100A, 2-pole 600V circuit protection
• Retrofits to upgrade or restore protection in commercial or light industrial electrical racks
• Replacement of a failed breaker to minimize downtime and ensure compliant, repeatable protection
• Spare parts stocking for facilities with Siemens N-series (or compatible) load centers

Quick compatibility checks: confirm the part number NGB2B100, match the amperage, poles, and voltage, and make sure your panel listing supports 600V devices. With these verifications, the Siemens NGB2B100 delivers dependable protection for your critical circuits, keeping systems running smoothly and safely.