Siemens NGB2B110B - 110 A, 600 V, 2-Pole Bolt-On Circuit Breaker | AmpState

The Siemens NGB2B110B is a 110 A, 600 V, two-pole bolt-on molded case circuit breaker engineered to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built for robust electrical protection in residential, commercial, and light industrial environments, this breaker combines precise protective action with a durable mounting design that keeps connections solid even in vibration-prone installations.

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection for long-term reliability and stable electrical performance.
• Thermal-magnetic trip unit delivers stable, repeatable protection by responding to both overload conditions and short circuits, reducing nuisance trips while safeguarding equipment.
• OEM-ready compatibility designed to work with matching Siemens OEM load centers and panelboards for seamless upgrades, replacements, or retrofits.
• Two-pole design with a 110 A rating and 600 V capacity, ideal for protecting higher-current branch circuits commonly found in residential, commercial, and light industrial circuits.

This model is purpose-built for those upgrading aging panels or configuring new electrical layouts where reliable protection, easy installation, and compatibility with Siemens ecosystem matter most. The bolt-on format simplifies mounting in compatible panelboards, helping installers secure a solid connection quickly and with fewer alignment issues than screw-on alternatives.

Where it shines

• New or Retrofit Projects: Use in existing Siemens-labeled panelboards and load centers to upgrade protection or expand capacity, especially on main distribution or subfeed circuits requiring 110 A protection at 600 V.
• Residential Subpanels and Light Commercial Panels: Protects lighting, power, and general-use circuits with a compact two-pole design that fits standard spaces in panel enclosures.
• Industrial-leaning Applications: Suitable for equipment branches in light industrial setups where reliable thermal-magnetic protection reduces downtime and equipment wear from faults.

Technical details at a glance

• Manufacturer: Siemens
• Part Number: NGB2B110B
• Type: Thermal-magnetic molded case circuit breaker
• Poles: 2
• Amperage Rating: 110 A
• Voltage Rating: 600 V
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Choosing the Siemens NGB2B110B means selecting a proven protection solution that aligns with Siemens’ panel and load center ecosystems, delivering consistent protection performance and streamlined installation. For installers and facility managers seeking reliable, compatible, and straightforward circuit protection, this 110 A, 600 V, two-pole bolt-on breaker is a well-suited choice that helps keep electrical systems safe and operation uninterrupted.