Siemens NGG3B015 - 15 A, 600 V, 3-Pole Circuit Breaker | AmpState

Meet the Siemens NGG3B015—a 15 A, 600 V, 3-pole molded‑case circuit breaker built to protect your most critical electrical circuits. Designed for dependable branch-circuit overcurrent and short‑circuit protection in panelboards and load centers, this unit combines compact footprint with robust performance for both home upgrades and commercial installations.

• Space‑efficient design: A compact molded‑case body makes the NGG3B015 easier to fit in crowded panels, helping you maximize available space without sacrificing protection.
• Thermal‑magnetic trip unit: This dual‑mode protection provides stable, repeatable performance. The thermal element detects sustained overloads, while the magnetic element ensures a fast trip on short circuits—reducing nuisance trips and safeguarding downstream equipment.
• OEM‑compatible installation: Engineered to align with matching Siemens panelboards and load centers, ensuring proper fit, coordinated trip curves, and straightforward replacement when servicing or upgrading panels.
• Versatile application: Ideal for residential service upgrades, commercial panelboards, and light‑industrial electrical layouts that demand reliable protection across multiple circuits.

The NGG3B015 is purpose‑built for branch circuit overcurrent and short‑circuit protection in environments where space, reliability, and compatibility matter. With a 3‑pole configuration, it provides synchronized protection across all three conductors, supporting safe operation in three‑phase or multi‑wire systems commonly found in commercial settings.

Technical snapshot

• Manufacturer: Siemens
• Part number: NGG3B015
• Type: Thermal‑magnetic molded case circuit breaker
• Amperage rating: 15 A
• Voltage rating: 600 V
• Number of poles: 3
• Application: Branch circuit protection in panelboards and load centers

Use cases and practical benefits

• Upgrading aging panels where a compact, reliable 3‑pole breaker is needed to support three‑phase equipment or multi‑wire circuits with a common trip.
• Installing new commercial or light‑industrial panels that require Siemens‑approved components for guaranteed compatibility and coordinated protection.
• Replacing a failed breaker in a Siemens‑brand panel to restore full circuit protection while preserving panel labeling and organization.

Pro tips for optimal performance

• Pair this breaker with Siemens OEM load centers or panelboards to ensure exact fit and coordinated trip characteristics.
• Verify that the connected circuits are within the 15 A rating to prevent nuisance trips and maintain safe operation.
• Follow standard electrical codes and manufacturer guidelines during installation, labeling, and maintenance to ensure continued compliance and safety.

Designed for electricians, facility managers, and serious do‑it‑yourselfers upgrading panel protection, the Siemens NGG3B015 delivers precise, dependable three‑pole protection in a compact package. When you need trusted Siemens engineering for reliable branch‑circuit safety, this 15 A, 600 V, 3‑pole molded‑case breaker is ready to perform—today and for years to come.