NB125H - 125Amp Circuit Breaker

NB125H - 125Amp Circuit Breaker

If you’re replacing a worn or faulty breaker in an existing panel, the NB125H 125 Amp circuit breaker is built to get the job done safely and reliably. This 2-pole, 120/240VAC thermal magnetic breaker is commonly used in residential and light commercial electrical systems where dependable overcurrent protection is essential. Designed with a bolt-on connection, the NB125H mounts securely to the panel bus, helping maintain a solid electrical connection over time. With a 10,000 AIC rating, it’s made to interrupt fault currents quickly, helping protect wiring, equipment, and the overall electrical system from damage.

Key Features and Benefits

• 125 Amp Rating – Designed to handle circuits requiring 125A protection.
• 2-Pole Breaker – Suitable for 120/240VAC applications.
• Thermal Magnetic Trip – Protects against both sustained overloads and sudden short circuits.
• Bolt-On Mounting – Provides a secure, stable panel connection.
• 10kA Interrupting Capacity – Rated at 10,000 AIC at 120/240VAC.
• NB Frame Design – Built for consistent performance in everyday electrical applications.

Technical Specifications

• Part Number: NB125H
  
• Amperage: 125A
  
• Poles: 2
  
• Voltage Rating: 120/240VAC
  
• Interrupting Capacity: 10,000 AIC at 120/240VAC
  
• Connection Type: Bolt-On
  
• Trip Type: Thermal Magnetic
  
• Frame Type: NB
  
• Dimensions:
  • Width: 2.00"
  • Length: 4.25"
  • Depth: 2.31"
• Weight: 2.25 lbs
  

Material Compliance and Certifications

• Industry Standards: The NB125H circuit breaker is manufactured using materials that meet established electrical industry standards. Each unit is tested for performance and safety to help ensure reliable operation under rated conditions. This attention to quality supports long-term use in properly matched electrical systems.
  

Where It Works Best

• The NB125H is commonly used for maintenance and replacement in residential panels, small commercial buildings, offices, and retail spaces. It’s a practical choice when you need a 125 amp, 2-pole bolt-on breaker for an existing 120/240VAC setup. Whether you’re updating aging equipment or restoring service, this breaker is designed to provide dependable circuit protection where it’s needed most.