NGB2B030B - 30 Amp Circuit Breaker

NGB2B030B - 30 Amp Circuit Breaker

The Siemens NGB2B030B is a high-performance 30 Amp, 2‑pole circuit breaker crafted for dependable overload and short‑circuit protection. Built with a thermal‑magnetic trip unit, this breaker responds precisely to electrical overloads and faults — keeping circuits safe and uninterrupted. Its generous interrupt capacity and straightforward design make it a go-to choice for commercial and industrial low‑voltage panelboards. Whether you’re outfitting a new facility or upgrading existing electrical infrastructure, this breaker delivers safety you can count on and performance that meets rigorous demand.

Key Features and Benefits

• Thermal‑Magnetic Trip Unit: Delivers accurate protection against overloads and short circuits, reducing risk to both wiring and connected equipment.
• High Interrupt Capacity: Rated at 14 kAIC at 600Y/347V and 25 kAIC at 480Y/277V, the breaker can handle fault currents reliably in demanding environments.
• 2‑Pole, 30 Amp Rating: Provides stable, balanced circuit protection for two-phase loads or a 240 V single-phase circuit.
• Load‑Side Lugs Only (TC1Q1): Simplifies installation and reduces wiring complexity, saving time and effort in panel wiring.
• Flexible Wiring Compatibility: Accepts 14 to 10 AWG (CU/AL) conductors, giving installers flexibility when wiring branch circuits.

Technical Specifications

• Frame Type: NGB
  
• Current Rating: 30 Amperes
  
• Poles: 2
  
• Interrupt Capacity:
  • 14 kAIC @ 600Y/347V
  • 25 kAIC @ 480Y/277V
• Wire Range: 14–10 AWG, Copper or Aluminum
  
• Dimensions:
  • Width: 2.0 in
  • Height: 5.4 in
  • Depth: 2.8 in
• Weight: 1.889 lb
  

Material Compliance and Certifications

• UL Listed: Meets strict safety and performance standards recognized across the industry.
• RoHS Compliant: Manufactured without hazardous substances, aligning with environmental health and safety requirements.
• WEEE Compliant: Adheres to electronic waste regulations, supporting responsible end-of-life recycling.

Where It Works Best

• This breaker excels in low‑voltage commercial and industrial panelboard applications — from office buildings and retail complexes to manufacturing plants and institutional facilities. It’s a strong fit for branch circuits carrying lighting, HVAC, or equipment loads that require reliable 240 V (or 2‑phase) protection. If you’re wiring a new electrical distribution panel, replacing existing breakers for improved safety, or upgrading wiring systems, this model offers dependable protection you can trust.