BQ3D070 - 70Amp Circuit Breaker

BQ3D070 - 70 Amp Circuit Breaker

The BQ3D070 is a 70-amp, 3-pole bolt-on molded case circuit breaker designed to provide dependable overcurrent protection in commercial and industrial electrical distribution systems. Built on the BQ frame platform, this breaker is engineered for form, fit, and functional replacement in compatible panelboards and load centers requiring a 3-pole, 70A configuration. With a 10k A.I.C. rating at 240VAC and HACR certification, the BQ3D070 is well-suited for HVAC equipment circuits and other applications where consistent, code-compliant protection is required. Rated for operation at 40°C, this breaker is built to last and perform reliably under normal operating conditions in legacy electrical systems.

Whether you’re maintaining an existing panel or replacing a failed unit, the BQ3D070 circuit breaker offers the amperage, interrupting capacity, and bolt-on mounting configuration needed to restore safe and proper electrical function.

Key Features and Benefits

• 70 Amp Continuous Protection: Designed to safeguard conductors and equipment from overloads and short circuits at 70 amps.
• 3 Pole Configuration: Provides protection for three-phase electrical systems.
• 10k A.I.C. Rating at 240VAC: Rated to interrupt up to 10,000 amps of fault current at 240 volts AC.
• Bolt-On Mounting: Secures directly to the panel bus for stable installation and proper electrical contact.
• HACR Rated: Suitable for heating, air conditioning, and refrigeration equipment applications.
• 40°C Temperature Rating: Calibrated for standard operating conditions in commercial and industrial environments.
• BQ Frame Type: Designed for compatibility with panels and systems that require BQ frame molded case circuit breakers.

Technical Specifications

• Part Number: BQ3D070
  
• Amperage: 70A
  
• Poles: 3
  
• Voltage Rating: 240VAC
  
• Interrupting Rating (A.I.C.): 10kA @ 240VAC
  
• Frame Type: BQ
  
• Mounting Type: Bolt-On
  
• HACR Rated: Yes
  
• Temperature Rating: 40°C
  
• Approximate Height: 3.29 inches
  
• Ship Weight: 3.0 lbs
  

Material Compliance and Certifications

• Industry Standards: The BQ3D070 molded case circuit breaker is manufactured to meet applicable industry standards for molded case circuit breakers, including HACR suitability.
• NEC Compliance: It is designed for installation in accordance with the National Electrical Code (NEC) and should be installed by a qualified professional to ensure compliance with local electrical regulations. Always verify panel compatibility and system requirements prior to installation.

Where It Works Best

• Commercial panelboards
• Industrial distribution panels
• HVAC equipment disconnect and branch circuits
• Three-phase electrical systems operating at 240VAC
• Maintenance and replacement projects involving BQ frame breakers