NGB1B030B - 30 Amp Circuit Breaker

NGB1B030B - 30 Amp Circuit Breaker

The Siemens NGB1B030B is a dependable 30-amp circuit breaker designed to provide reliable protection and safe power handling — whether you're wiring a new panel or replacing an existing breaker in a home, commercial, or light industrial setting. This unit meets UL 489 standards, and its build quality and ratings make it a practical, long-lasting solution for a variety of electrical installations. With a compact footprint and included load lugs, installation is straightforward and stress-free.

Key Features and Benefits

• High Fault‑Current Protection: Rated for 25 kA at 277 V and 14 kA at 347 V, this breaker can handle significant fault currents, offering strong protection against short circuits and overloads.
• Ready for Easy Installation: Load lugs come included, making wiring fast and secure — saving time on setup and reducing labor costs.
• Space‑Saving Profile: Its slim, single‑pole design fits neatly in crowded or compact panel configurations, ideal for tight spaces.
• Wide Voltage Application: Supports up to 347 V AC, making it suitable for a broad range of residential and commercial electrical systems.

Technical Specifications

• Poles: 1 (single‑pole)
  
• Rated Current: 30 A
  
• Maximum Voltage: 347 V AC
  
• Interrupting Capacity (NEMA):
  • 25 kA @ 277 V AC
  • 14 kA @ 347 V AC
• Weight: 0.880 lb
  
• Certification: UL 489
  

Material Compliance and Certifications

• UL Standards: This breaker is fully compliant with UL 489 safety requirements — a benchmark for electrical safety and reliability.
• RoHS Compliance: It also meets the requirements of the RoHS directive (practical since July 2006), ensuring it is free from hazardous materials and safe for long-term use in modern electrical systems.

Where It Works Best

• Residential wiring — Replacing existing breakers or expanding load capacity in home panelboards.
• Commercial settings — Office buildings, retail spaces, or light commercial operations requiring reliable circuit protection.
• Light industrial applications — Where moderate power loads must be managed safely and efficiently.
• Panelboard upgrades or retrofits — Its compact size and high interrupting capacity make it ideal for upgrading older systems or installing in panels with limited space.