NGB1B100B - 100 Amp Circuit Breaker

NGB1B100B - 100 Amp Circuit Breaker

The Siemens NGB1B100B circuit breaker offers dependable, high-performance circuit protection for residential, commercial, and light‑industrial electrical systems. Designed to carry up to 100 amps at up to 347 V AC, this breaker meets UL489 safety standards and delivers fault-current-interruption capacity that withstands heavy load conditions. Compact yet capable, it fits neatly into standard breaker panels and wiring setups — making it a smart choice when you want to ensure consistent protection without unnecessary bulk or complexity.

Key Features and Benefits

• High Fault‑Current Protection: With a NEMA interrupting rating of 25 kA at 277 V and 14 kA at 347 V, this breaker helps safeguard your system against short circuits and overloads.
• Load Lugs Included: Comes ready with load lugs so you don’t need extra accessories, simplifying installation and reducing labor time.
• Space‑Saving Design: The streamlined, single‑pole construction fits well into tight panel spaces or densely packed breaker boxes.
• Versatile Performance: Suitable for a wide range of settings — from homes to commercial buildings — delivering reliable circuit protection wherever you need it.

Technical Specifications

• Poles: 1 (single‑pole)
  
• Rated Current: 100 A
  
• Maximum Voltage: 347 V AC
  
• Interrupting Capacity (NEMA):
  • 25 kA at 277 V
  • 14 kA at 347 V
• Weight: 0.880 lb
  

Material Compliance and Certifications

• UL Standards: This NGB1B100B unit complies with UL489 requirements, ensuring it meets recognized safety standards for circuit breakers.
• RoHS Compliance: It also adheres to RoHS directives, meaning it’s free from hazardous substances and safe for environmentally conscious installations and long‑term use.

Where It Works Best

• This breaker is ideal when you need a dependable 100 A circuit protector in a standard breaker panel — whether you’re wiring a new residential distribution box, upgrading a small commercial electrical system, or replacing an old breaker in an industrial‑light facility. Its compact size and high interrupting capacity make it especially useful in installations where space is tight, demands are heavy, and safety is non‑negotiable.