NB232070 - 70Amp Circuit Breaker

NB232070 - 70Amp Circuit Breaker

If you need dependable protection for a three-phase system, the NB232070 70 Amp circuit breaker is built to handle the job. This 3-pole, thermal magnetic breaker helps guard electrical systems against overloads and short circuits, reducing the risk of equipment damage and unexpected downtime. With a 70A rating and 10kA interrupting capacity at 240VAC, it’s designed for circuits that carry heavier loads and need steady, consistent protection. The bolt-on design provides a firm connection to the panelboard bus, which helps minimize movement and supports long-term performance. Its compact 3-inch width also makes it easier to work within tight panel spaces. Whether you’re replacing an existing unit or maintaining a commercial or residential three-phase setup, the NB232070 offers reliable performance without unnecessary complexity.

Key Features and Benefits

• 70 Amp Rating: Protects higher-capacity circuits from overload conditions.
• 3-Pole Configuration: Covers all three phases for balanced three-phase power systems.
• Thermal Magnetic Trip: Responds to both sustained overloads and sudden short circuits.
• Bolt-On Mounting: Secures directly to the panelboard bus for a stable installation.
• Space-Efficient Size: 3.00" width allows efficient use of panel space.
  

Technical Specifications

• Model: NB232070
  
• Amperage: 70A
  
• Poles: 3
  
• Interrupting Capacity: 10kA @ 240VAC
  
• Frame Type: NB
  
• Dimensions:
  • Width: 3.00"
  • Length: 3.38"
  • Depth: 2.31"
• Shipping Weight: 2.75 lbs
  

Material Compliance and Certifications

• The NB232070 is manufactured to meet recognized industry standards for low-voltage circuit protection.
• Its internal trip mechanism is designed for consistent operation within its rated capacity when installed in compatible panelboards and according to applicable electrical codes.
  

Where It Works Best

• This breaker is commonly used in commercial buildings, light industrial facilities, and larger residential properties that operate on three-phase power.
• It works well for HVAC equipment, motor loads, distribution panels, and other circuits where dependable 70-amp protection is required.