BQ3D040 - 40Amp Circuit Breaker

BQ3D040 - 40 Amp Circuit Breaker

The BQ3D040 is a 40-amp, 3-pole bolt-on molded case circuit breaker designed for use in compatible BQ frame panelboards and distribution systems. Rated for 10kA interrupting capacity at 240VAC, this breaker provides dependable overcurrent protection for commercial and industrial electrical applications operating at standard low-voltage levels. Built for form, fit, and functional replacement in existing systems, the BQ3D040 installs securely with a bolt-on connection to help maintain proper contact and stability within the panel. It is HACR rated and calibrated for operation at 40°C, making it suitable for HVAC-related circuits and other equipment requiring consistent thermal performance. Designed with durability in mind, this breaker delivers reliable circuit protection in demanding environments where maintaining legacy infrastructure is essential.

Key Features and Benefits

• 40 Amp Continuous Current Rating: Protects branch circuits and equipment requiring up to 40 amps of overcurrent protection.
• 3 Pole Configuration: Ideal for three-phase systems and multi-phase distribution setups.
• 10kA @ 240VAC Interrupting Rating: Safely interrupts fault currents up to 10,000 amps at 240 volts AC.
• Bolt-On Mounting Style: Provides secure installation and stable connection within compatible BQ frame panelboards.
• HACR Rated: Approved for use with heating, air conditioning, and refrigeration equipment.
• 40°C Temperature Calibration: Designed for consistent performance in standard commercial operating environments.
• Built to Last: Manufactured for long-term use in electrical distribution systems where dependable protection is required.
  

Technical Specifications

• Part Number: BQ3D040
  
• Manufacturer Frame Type: BQ
  
• Amperage: 40 Amps
  
• Poles: 3
  
• Voltage Rating: 240VAC
  
• Interrupting Capacity (A.I.C.): 10kA @ 240VAC
  
• Mounting Type: Bolt-On
  
• Temperature Rating: 40°C
  
• HACR Rated: Yes
  
• Breaker Type: Molded Case Circuit Breaker
  
• Approximate Shipping Weight: 3.0 lbs
  
• Height: 3.29 inches
  

Material Compliance and Certifications

• Industry Standards: The BQ3D040 is manufactured to meet applicable industry standards for molded case circuit breakers, including compliance with recognized North American electrical safety requirements.
• HACR Certification: HACR certification confirms suitability for HVAC applications.
• Installation Requirements: As with all circuit protection devices, installation should be performed in accordance with the National Electrical Code (NEC) and local regulations to ensure proper compliance and safety.
  

Where It Works Best

• Commercial and industrial panelboards
• Three-phase distribution systems
• HVAC and refrigeration circuits
• Mechanical equipment disconnect protection
• Facilities maintaining existing BQ frame electrical systems