BQD6340 - 40Amp Circuit Breaker

BQD6340 - 40Amp Circuit Breaker

When dependable circuit protection is critical, the Siemens BQD6340 delivers the performance electrical professionals expect from one of the industry's most trusted manufacturers. This 40-amp, 3-pole molded case circuit breaker is designed for use in 600/347VAC electrical distribution systems, helping you protect equipment, conductors, and connected loads from damaging overloads and short circuits. Featuring a thermal-magnetic trip unit, the BQD6340 responds effectively to both prolonged overcurrent conditions and sudden fault events, providing an extra layer of protection for your commercial and industrial power systems.

Its compact design, 100-amp frame, and 10kA interrupting capacity make it well suited for lighting panels, branch circuits, distribution equipment, and other demanding electrical installations.

Key Features and Benefits

• Provides dependable overload and short-circuit protection for commercial and industrial electrical systems
• 40-amp continuous current rating for a wide range of power distribution applications
• Three-pole design ideal for three-phase electrical systems
• Thermal-magnetic trip technology helps improve protection against both sustained overloads and fault currents
• Rated for 600/347VAC systems commonly found in commercial facilities and industrial environments
• 10kA interrupting capacity for reliable fault interruption
• Panelboard-mount construction simplifies integration into compatible Siemens distribution equipment

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: BQD6340
  
• Series: BQD6
  
• Product Type: Molded Case Circuit Breaker
  
• Amperage Rating: 40 Amps
  
• Number of Poles: 3
  
• Voltage Rating: 600/347 VAC
  
• Frequency: 50/60 Hz
  
• Interrupting Capacity: 10 kAIC
  
• Frame Size: 100 Amps
  
• Trip Unit: Thermal Magnetic
  
• Mounting Type: Panelboard Mount
  
• Connection Type: Low Tab
  
• Dimensions:
  • Height: 5 in.
  • Width: 3 in.
  • Depth: 3 in.
• Weight: 1.691 lbs
  

Material Compliance and Certifications

• Industry Standards: This breaker is UL 489 Listed and CSA C22.2 Certified, demonstrating compliance with established North American standards for molded case circuit breakers.
  

Where It Works Best

• The Siemens BQD6340 is commonly found in commercial buildings, schools, healthcare facilities, office complexes, manufacturing plants, warehouses, and other properties utilizing 347/600VAC electrical distribution systems.