Siemens NGG2B050 - 50 A, 600 V, 2-Pole Circuit Breaker | AmpState

Siemens NGG2B050 — a 50 A, 600 V, 2-pole molded case circuit breaker built to protect branch circuits in panelboards and loadcenters with precision and reliability.

Designed for dependable overcurrent and short-circuit protection, this breaker maximizes space efficiency inside modern electrical panels while delivering consistent trip performance. The compact molded case design makes it ideal for tight installations where panel real estate matters, without sacrificing protection or handle a heavy load when needed.

Why this breaker stands out

• Compact molded case design maximizes panel space and supports tidy, compliant installations in both new builds and upgrades.
• Thermal-magnetic trip unit provides stable, repeatable protection for both overloads and instantaneous faults, reducing nuisance trips and safeguarding connected equipment.
• 2-pole, 50 A, 600 V rating suits branch circuits supplying feeders, lighting, outlets, and small-to-medium motors in residential, commercial, and light industrial environments.
• OEM-compatible engineered to fit matching Siemens OEM load centers and panelboards for consistent performance and straightforward replacement.

Technical specifications at a glance

• Manufacturer: Siemens
• Part Number: NGG2B050
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 50 A
• Voltage Rating: 600 V
• Number of Poles: 2
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases

• Residential panelboards distributing power to outlets, lighting, and small appliances
• Commercial spaces such as offices or retail environments with dedicated lighting and receptacle circuits
• Light industrial settings where reliable protection for feeders and motors is required

How it solves common problems

When circuits face unexpected surges or overloads, the NGG2B050's thermal-magnetic mechanism quickly, accurately trips to prevent wire insulation damage, fire risk, and equipment failure. Its compact size frees panel space for additional circuits, while the Siemens branding ensures compatibility with existing OEM panel systems for streamlined upgrades and maintenance.

Practical guidance

• Use as a direct replacement in Siemens OEM load centers and panelboards designed for molded case breakers with similar ratings.
• Pair with appropriate gauge conductors and comply with local electrical codes for safe, compliant installations.
• Consider this 2-pole breaker for circuits that require simultaneous disconnection of both hot conductors, ensuring safer shutdowns of multi-wire branch circuits.

Choose the Siemens NGG2B050 when you need reliable, space-efficient protection for 50 A circuits up to 600 V, backed by Siemens engineering and a design purpose-built for panelboard and loadcenter environments.