BQ3B04000S01 - 40Amp Circuit Breaker

BQ3B04000S01 - 40Amp Circuit Breaker

Protect your three-phase circuits with confidence using the Siemens BQ3B04000S01, a 40-amp, 3-pole molded case circuit breaker built for reliable branch circuit protection in commercial and industrial electrical systems. Part of Siemens’ trusted Type BQ family, this breaker features a common-trip design, disconnecting all three poles simultaneously if an overload or short circuit occurs. Its 120V shunt trip adds an extra layer of control, and the included load-side lugs make installation straightforward. Ideal for motor circuits, HVAC equipment, control panels, and other critical 240V three-phase applications, the BQ3B04000S01 provides dependable protection while maintaining smooth operation in legacy systems.

Key Features and Benefits

• 40 Amp, 3-pole molded case circuit breaker
• Common-trip design disconnects all poles together
• 120V Shunt Trip for added control
• Rated for 240VAC electrical systems
• 10 kA interrupting capacity (10kAIC)
• Bolt-on installation ensures a secure panel connection
• Load-side lugs included for easier wiring
• Designed for branch circuit protection in commercial and industrial settings
• Fits legacy Siemens Type BQ panelboards
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: BQ3B04000S01
  
• Number of Poles: 3
  
• Amperage Rating: 40 Amps
  
• Voltage Rating: 240 VAC
  
• Interrupting Rating: 10 kAIC
  
• Trip Type: Common Trip
  
• Mounting Type: Bolt-On
  
• Shunt Trip Voltage: 120V
  
• Load-Side Lugs: Included
  
• Dimensions: 4 in. W x 4 in. H x 6 in. D
  
• Net Weight: 1.808 lb
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

• UL 489 Listed
• Built to Siemens standards for low-voltage electrical distribution
  

Where It Works Best

• This breaker is ideal for commercial buildings, factories, schools, warehouses, and other facilities where three-phase branch circuit protection is needed.