NGB3B030B - 30 Amp Circuit Breaker

NGB3B030B - 30 Amp Circuit Breaker

The Siemens NGB3B030B circuit breaker delivers dependable low‑voltage protection for a wide range of electrical distribution systems, making it an excellent choice where safety and reliability matter most. Whether you’re upgrading a commercial panelboard or outfitting an industrial switchboard, this breaker provides effective defense against overloads and short circuits — giving you peace of mind that your equipment and wiring are shielded from electrical faults.

Key Features and Benefits

• Thermal‑Magnetic Trip Unit: Combines delayed thermal tripping for sustained overload conditions with instantaneous magnetic trip for short‑circuit protection. This dual‑mechanism ensures electrical circuits are safeguarded under varying load conditions.
• High Fault‑Interruption Capacity: Rated at 14 kA for 600Y/347 V and 25 kA for 480Y/277 V, the NGB3B030B handles substantial fault currents, ensuring quick interruption when a fault occurs — ideal for demanding commercial or light‑industrial applications.
• Space‑Saving Footprint: With dimensions of just 3″ (W) × 5.4″ (H) × 2.8″ (D), this breaker fits neatly into standard panelboards and switchboards, even when space is limited.
• Easy Load Connections: Equipped with load‑side lugs (TC1Q1) accommodating 14–10 AWG (CU/AL) wiring, for straightforward and secure installation.
• Dependable Operation: Designed to deliver consistent performance in situations that demand reliability, making it suitable for everyday use in commercial and industrial settings.

Technical Specifications

• Rated Current: 30 Amps
  
• Poles: 3
  
• Voltage Ratings:
  • 600Y/347 V AC (14 kA)
  • 480Y/277 V AC (25 kA)
• Dimensions:
  • Width: 3.0 inches
  • Height: 5.4 inches
  • Depth: 2.8 inches
• Weight: 2.615 lbs
  
• Wire Range: 14–10 AWG (Copper or Aluminum)
  
• Trip Unit Type: Thermal‑Magnetic
  

Material Compliance and Certifications

• UL Listed: Meeting rigorous safety and performance standards — giving you confidence in its quality and reliability.
• Environmental Compliance: Complies with RoHS (Restriction of Hazardous Substances) and REACH regulations, reflecting adherence to environmental safety standards and the absence of restricted hazardous materials.

Where It Works Best

• The Siemens NGB3B030B shines in commercial and light‑industrial environments. It’s ideally suited for panelboards, switchboards, and distribution panels in office buildings, retail establishments, light manufacturing units, and residential complexes with higher‑capacity electrical needs. If you’re looking for a dependable 30 Amp breaker to protect lighting circuits, HVAC systems, or small‑motor loads — especially where installation space is limited — this model delivers solid performance and trustworthy protection.