B340H - 40Amp Circuit Breaker

B340H - 40Amp Circuit Breaker

The Siemens B340H circuit breaker is built for protecting your three-phase electrical systems in commercial and industrial applications. Rated at 40 amps and 240VAC, this molded case circuit breaker helps protect your equipment and wiring from overloads and short circuits that can interrupt operations or damage electrical systems.

This 3-pole breaker uses a thermal magnetic trip design to respond to both overload conditions and fault currents. With a 22kA interrupting rating, it is suited for applications where higher fault current protection is needed. The bolt-on mounting style provides a secure fit in compatible panelboards and electrical distribution equipment, while the compact design helps you save space inside the panel.

The Siemens B340H is commonly used in HVAC systems, control panels, machinery, and general electrical distribution systems where reliable circuit protection is required for everyday operation.

Key Features and Benefits

• 40 amp molded case circuit breaker: Built for commercial and industrial electrical systems requiring dependable circuit protection.
• 3-pole configuration for three-phase systems: Suitable for three-phase electrical distribution applications.
• 240VAC voltage rating: Designed for low-voltage electrical distribution systems.
• Thermal magnetic trip protection: Helps protect against overloads and short circuits during operation.
• 22kA interrupting capacity: Suitable for applications where higher fault current protection is needed.
• Bolt-on mounting style: Provides a secure fit in compatible panelboards and electrical distribution equipment.
• Compact design for panel installations: Helps save valuable space inside crowded electrical panels.
• Suitable for commercial and industrial electrical systems: Designed for dependable everyday electrical protection.
• Designed for low-voltage electrical distribution: Suitable for a variety of electrical distribution applications.
• UL 489 listed: Manufactured to meet recognized electrical industry standards.
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: B340H
  
• Product Type: Molded Case Circuit Breaker
  
• Series: BLH
  
• Amperage Rating: 40 Amps
  
• Voltage Rating: 240 VAC
  
• Number of Poles: 3 Pole
  
• Interrupt Rating: 22kA
  
• Trip Type: Thermal Magnetic
  
• Mounting Type: Bolt-On
  
• Application: Electrical Distribution
  
• Standard: UL 489
  
• Dimensions:
  • 2.563 in.
  • 3.00 in.
  • 3.122 in.
• Net Weight: 0.948 lb
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

• UL 489 Standards: The Siemens B340H 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

• Commercial buildings
• Industrial facilities
• HVAC systems
• Control panels
• Panelboards and switchboards
• Manufacturing equipment
• OEM machinery
• Motor control applications
• Three-phase electrical distribution systems