Siemens NGG3B090 - 90 A, 600 V, 3-Pole Circuit Breaker | AmpState

Meet the Siemens NGG3B090—a 90 A, 600 V, 3-pole molded case circuit breaker built to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. This compact MCCB is designed to fit tight spaces without sacrificing protection or performance, making it a practical choice for modern electrical installations.

Why this breaker stands out

• Space-efficient design — The compact molded case format maximizes panel space, helping you optimize layouts in crowded load centers and new builds alike.
• Thermal-magnetic trip unit — Provides stable, repeatable protection by responding to both overload currents and short circuits, with reliable performance across a range of temperatures and loads.
• 3-pole configuration — Suited for three-phase systems, enabling coordinated protection for multi-wire branch circuits in commercial and light industrial environments.
• High-current capability — 90 A rating gives you robust protection for demanding loads while remaining compatible with common branch circuits in both new constructions and upgrades.
• OEM compatibility — Designed to work with matching Siemens OEM panelboards and load centers, ensuring a straightforward, secure replacement or retrofit.
• Versatile applications — A dependable choice for residential, commercial, and light industrial projects that require reliable short-circuit and overcurrent protection.

What problems this breaker solves

• Prevents damage from overloads and short circuits by interrupting current quickly and predictably.
• Reduces panel clutter and simplifies installation with a compact form factor designed for efficient space use.
• Delivers consistent protection across varied operating conditions, helping to maintain electrical system uptime in busy facilities.
• Offers confidence for upgrades or new builds by aligning with Siemens panelboards and OEM components for a cohesive protection scheme.

Technical snapshot

• Manufacturer: Siemens
• Part Number: NGG3B090
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 90 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use scenarios

• Upgrading or retrofitting service panels in light commercial spaces where three-phase protection is required.
• Integrating with Siemens panelboards and OEM-rated load centers during new construction to ensure a cohesive protection strategy.
• Distributing power to multiple circuits in residential settings that demand reliable, long-term protection with space-efficient design.
• Replacing aging or undersized breakers in environments where consistent thermal-magnetic trip performance reduces nuisance trips and improves reliability.

When you choose the Siemens NGG3B090, you’re investing in a proven, purpose-built solution for reliable electrical protection. Its combination of a compact design, precise thermal-magnetic protection, and OEM compatibility makes it a thoughtful, long-term choice for panel optimization and safe, efficient power distribution.