B340 - 40Amp Circuit Breaker

B340 - 40Amp Circuit Breaker

The Siemens B340 circuit breaker is designed to protect your three-phase electrical systems in commercial and industrial applications. With a 40 amp rating and 240VAC capacity, it helps protect your circuits and equipment from overloads and short circuits that can lead to downtime or equipment failure. Its compact molded case design makes it a practical fit for panelboards, HVAC equipment, machinery, and general power distribution systems where dependable circuit protection is needed every day.

Key Features and Benefits

• 40 amp rating for commercial and industrial electrical systems: Helps provide dependable circuit protection for everyday applications.
• 3-pole configuration for three-phase applications: Suitable for commercial and industrial electrical systems.
• Helps protect against overloads and short circuits: Designed to help reduce the risk of electrical damage and downtime.
• 10kA interrupting capacity for fault protection: Helps protect systems during fault conditions.
• Bolt-on mounting style for secure installation: Provides a reliable fit in compatible panelboards.
• Compact molded case design helps save panel space: Useful in crowded electrical panels and control equipment.
• Suitable for HVAC systems, panelboards, and machinery applications: Built for commercial and industrial power distribution needs.
• UL 489 listed for low-voltage electrical distribution use: Manufactured to recognized industry standards.
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: B340
  
• Product Type: Molded Case Circuit Breaker
  
• Design Type: BL
  
• Amperage Rating: 40 Amps
  
• Voltage Rating: 240 VAC
  
• Number of Poles: 3 Pole
  
• Interrupt Rating: 10kA
  
• Connection Type: Bolt-On
  
• Application: Electrical Distribution
  
• Standard: UL 489
  
• Dimensions:
  • Depth: 4 in.
  • Width: 3 in.
  • Height: 2 in.
• Net Weight: 0.948 lb
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

• UL 489 Standards: The Siemens B340 circuit breaker is manufactured to meet UL 489 standards for molded case circuit breakers used in low-voltage electrical distribution systems.
  

Where It Works Best

• The B340 is commonly used in commercial buildings, industrial facilities, control panels, HVAC systems, machinery, branch circuits, and electrical distribution equipment requiring reliable three-phase circuit protection.