Siemens NGG3B030 - 30 A, 600 V, 3-Pole Circuit Breaker | AmpState

Meet the Siemens NGG3B030 — a purpose-built 30A, 600V, 3-pole molded case circuit breaker designed to safeguard branch circuits in panelboards and load centers. Engineered for dependable overcurrent and short-circuit protection, this unit is a reliable cornerstone for residential, commercial, and light industrial electrical systems.

• Space-efficient molded-case design minimizes footprint and frees up valuable panel real estate, helping you fit more circuits in the same enclosure.
• Thermal-magnetic trip unit delivers stable, repeatable protection by combining thermal overload sensing with magnetic instantaneous trip for quick response to short circuits.
• 3-pole, common-trip configuration ideal for three-phase circuits or multi-wire branch circuits, ensuring coordinated protection across all phases.
• OEM-compatible installation designed to work with matching OEM load centers and panelboards for straightforward replacements and dependable fit‑up.
• Versatile application range suitable for a wide array of settings—from home utility rooms to light commercial and industrial environments that demand reliable fault protection.
• Clear electrical rating 30A at 600V, pairing well with typical medium-power branch circuits and equipment feeders while maintaining safe, predictable operation.

Technical snapshot

• Manufacturer: Siemens
• Part number: NGG3B030
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 30A
Voltage rating: 600V
• Number of poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

The NGG3B030 is more than a switch — it’s a critical component that helps you maintain electrical safety, reduce nuisance trips, and keep panels organized with a compact, reliable design. Whether you’re upgrading an existing panel, adding circuits, or replacing a worn breaker, this Siemens molded-case breaker provides the protection you need with the ease of compatibility you expect from AmpState distribution.