NGB1B045B - 45 Amp Circuit Breaker

NGB1B045B - 45 Amp Circuit Breaker

The NGB1B045B is a 45‑amp, single‑pole circuit breaker built to deliver dependable protection and long-term performance in both commercial and industrial wiring systems. Rated for up to 347 V AC, it’s engineered to help safeguard your panelboards and switchboards from overloads and fault conditions. Compact yet powerful, this breaker blends dependable safety with ease of installation — making it a practical choice for new electrical installations or retrofits alike.

Key Features and Benefits

• High fault-handling capacity: With a NEMA interrupting rating of 25 kA at 277 V and 14 kA at 347 V, this breaker can handle substantial fault currents without compromising safety or uptime.
• Long-lasting construction: Manufactured with quality materials designed to resist wear and tear, the NGB1B045B supports reliable operation over years of use, reducing maintenance and replacement costs.
• Simple installation: Equipped with load lugs, it makes wiring straightforward and helps reduce setup time, whether you’re wiring a new panel or upgrading an existing board.
• Code-compliant and safe: Certified according to UL489 standards, it meets key safety and performance requirements, giving you peace of mind that your installation meets recognized industry benchmarks.

Technical Specifications

• Current Rating: 45 A
• Maximum Operating Voltage: 347 V AC
• Interrupting Rating:
  • 25 kA @ 277 V
  • 14 kA @ 347 V
• Configuration: Single‑pole (1 pole)
• Mounting Type: Designed for standard panelboards and switchboards

Material Compliance and Certifications

• UL489 Certified: This breaker meets rigorous safety and performance criteria as defined in UL489, reflecting adherence to established standards for circuit protection devices.
• RoHS Compliant: Free of hazardous substances, the NGB1B045B aligns with global environmental and safety guidelines, ensuring responsible manufacturing and operation.

Where It Works Best

• The NGB1B045B excels in commercial and light‑to‑medium industrial settings — perfect for panelboards, distribution boards, or switchboards in offices, retail spaces, workshops, or equipment rooms. Because of its compact size and high fault capacity, it’s ideal both for new installations and retrofits. Whether you’re upgrading an aging system or installing a new electrical distribution panel, this breaker offers easy installation and reliable performance when safety and reliability matter most.