NGB1B050B - 50 Amp Circuit Breaker

NGB1B050B - 50 Amp Circuit Breaker

Upgrade your electrical safety with the Siemens NGB1B050B — a dependable 50 Amp single‑pole circuit breaker designed to deliver consistent circuit protection in demanding environments. Whether you’re wiring a commercial facility, industrial equipment, or a complex residential panel, this breaker offers solid performance under load and short‑circuit conditions. Certified to UL 489 standards and built with quality materials, the NGB1B050B gives you peace of mind and long-term reliability for your electrical system.

Key Features and Benefits

• High interrupting capacity: With a NEMA rating of 25 kA at 277 V and 14 kA at 347 V, this breaker delivers strong fault‑current protection — ideal for commercial and industrial systems where safety and reliability matter most.
• Space‑efficient design: The compact single‑pole configuration simplifies installation and fits neatly into standard breaker panels, making it easier to maximize panel space.
• Includes load lugs: Comes ready with pre-installed load lugs, so you can install it quickly and with minimal fuss — no extra parts needed.
• Reliable circuit protection: As a 50 Amp, UL‑certified breaker, it offers dependable overcurrent and short‑circuit defense for a variety of wiring setups.
  

Technical Specifications

• Rated Current: 50 Amps
  
• Maximum Voltage: 347 V AC
  
• Interrupting Capacity:
  • 25 kA at 277 V
  • 14 kA at 347 V
• Poles: 1 (single‑pole)
  
• Net Weight: 0.880 lbs
  
• Compliance: Meets RoHS standards as of 07/01/2006
  

Material Compliance and Certifications

• RoHS Compliance: The NGB1B050B abides by strict RoHS directives, confirming it’s free from hazardous substances — a nod to environmentally conscious manufacturing.
• UL Certification: Additionally, it carries UL 489 certification, meaning it’s tested and approved for circuit breaker performance and safety. These certifications reflect a commitment to quality and regulatory compliance, assuring you that your electrical installations meet recognized safety benchmarks.
  

Where It Works Best

• This circuit breaker is an excellent choice for commercial buildings, industrial facilities, and residential projects where you need dependable, high‑capacity protection. Use it to safeguard office electrical panels, manufacturing equipment, HVAC systems, or any setup requiring a 50 Amp circuit. If you’re building or upgrading infrastructure and you want stability, safety, and code‑compliant protection — the NGB1B050B is a smart and practical solution.