Siemens NGG2B030 - 30 A, 600 V, 2-Pole Circuit Breaker | AmpState

Siemens NGG2B030 is a purpose-built, 2-pole molded case circuit breaker designed to defend your electrical system from overloads and short circuits. With a 30A rating and a 600V maximum, this compact unit fits cleanly into Siemens panelboards and load centers, delivering dependable protection where it matters most.

• Compact molded case design maximizes space efficiency inside panelboards, helping you tidy and organize electrical panels without sacrificing protection.
• Thermal-magnetic trip unit provides stable, repeatable protection across a wide range of loads, from steady resistive circuits to motors with inrush, reducing nuisance trips while preserving safety.
• 2-pole protection simultaneously guards both conductors, ensuring reliable disconnection and balanced protection in multi-wire branch circuits.
• OEM-compatible performance is designed to work with matching Siemens panelboards and load centers, delivering coordinated protection and consistent electrical behavior.
• Versatile application suitable for residential, commercial, and light industrial environments, where reliable branch circuit protection is essential.

Technical snapshot

• Manufacturer: Siemens
• Part Number: NGG2B030
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 30 A
• Voltage Rating: 600 V
• Number of Poles: 2
• Application: Branch circuit overcurrent and short-circuit protection

Why this breaker matters in your electrical setup

• Enhanced safety and reliability—the thermal-magnetic trip unit reacts to both overloads and short circuits, minimizing the risk of wiring damage and fire hazards while ensuring a predictable response.
• Space-conscious protection—the molded case design preserves valuable panel real estate, making it ideal for retrofit projects or compact installations.
• Clear compatibility—engineered to integrate with Siemens panelboards and load centers, so you can upgrade or expand with confidence without sacrificing system coordination.
• Targeted use cases—perfect for branch circuits in residential panels, small commercial setups, and light industrial distribution where a dependable 30A, 600V two-pole solution is required.

Practical scenarios for NGG2B030

• Upgrading an aging panel to ensure modern protection for lighting, receptacle circuits, and small-appliance runs in homes or small offices.
• Adding a dedicated two-pole breaker for a motor-driven device or HVAC accessory within a Siemens-compatible panel.
• Replacing a failed breaker in a panelboard where a snug, space-efficient fit and consistent trip characteristics are essential.

Installation and maintenance tips

• Always install in compatible Siemens OEM load centers or panelboards to ensure proper fit, labeling, and trip coordination.
• Verify circuit requirements match the 30 A rating and ensure conductors and fixtures are sized accordingly.
• After a trip, reset only after inspecting the circuit for or addressing the underlying fault to prevent repeat interruptions.

Choose the Siemens NGG2B030 for a precise, durable, and space-conscious protection solution that aligns with Siemens panel ecosystems. Available through AmpState, it’s a dependable choice for safeguarding branch circuits across residential, commercial, and light industrial projects.