BQ2B040 - 40Amp Circuit Breaker

BQ2B040 - 40Amp Circuit Breaker

The Siemens BQ2B040 is a 40 amp, 2-pole circuit breaker for your Siemens Type BQ load centers and panelboards. Rated for 120/240 VAC, it uses a common-trip design that opens both poles during an overload or short circuit condition.

The bolt-on construction provides a secure connection within the panel, and load-side lugs are included. A 40 amp, 2-pole breaker is often used on dedicated 240-volt circuits serving equipment such as air conditioners, heat pumps, water heaters, pumps, and compressors. The BQ2B040 carries a 10 kA interrupting rating and is UL 489 Listed for branch circuit protection applications.

Key Features and Benefits

• Siemens Type BQ Circuit Breaker: Designed for use in compatible Siemens Type BQ load centers and panelboards.
• 40 Amp Current Rating: Suitable for branch circuits requiring 40 amp overcurrent protection.
• 2-Pole Common-Trip Design: Opens both poles during an overload or short circuit condition.
• 120/240 VAC Rating: Compatible with standard residential, commercial, and light industrial electrical systems.
• 10 kAIC Interrupting Capacity: Provides reliable fault interruption capability.
• Bolt-On Connection: Provides a secure connection within the panel.
• Load-Side Lugs Included: Ready for wiring connection during installation.
• Thermal Magnetic Operation: Provides protection against overloads and short circuits.
• Designed for Branch Circuits: Suitable for a variety of electrical distribution applications.
• UL 489 Listed: Certified for branch circuit protection applications.
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: BQ2B040
  
• UPC: 783643102439
  
• Product Type: Molded Case Circuit Breaker
  
• Circuit Breaker Series: BQ
  
• Number of Poles: 2
  
• Current Rating: 40 Amps
  
• Voltage Rating: 120/240 VAC
  
• Interrupting Rating: 10 kAIC
  
• Trip Configuration: Common Trip
  
• Connection Type: Bolt-On
  
• Load-Side Lugs: Included
  
• Application: Electrical Distribution
  
• Standard: UL 489
  
• Dimensions:
  • Depth: 13 in.
  • Height: 3.7 in.
  • Width: 5 in.
• Net Weight: 0.28 kg
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

• Industry Standards: The Siemens BQ2B040 is manufactured for low-voltage electrical systems and meets UL 489 requirements for molded case circuit breakers.
• UL 489 Listed: Certified for branch circuit protection applications.
• Export Classification: EAR99
• Dangerous Goods Classification: No
• WEEE Take-Back Obligations: No
• REACH Information: Available from Manufacturer
  

Where It Works Best

• The BQ2B040 is frequently used in residential panels, commercial buildings, workshops, maintenance facilities, and light industrial applications. It is commonly selected for air conditioning equipment, heat pumps, electric water heaters, pumps, compressors, and other dedicated 240-volt circuits requiring a 40 amp, 2-pole breaker.