B345HH - 45Amp Circuit Breaker

B345HH - 45Amp Circuit Breaker

The Siemens B345HH circuit breaker is designed for commercial and industrial electrical systems that require higher fault-current protection. Rated at 45 amps and 240VAC, this 3-pole molded case circuit breaker helps protect your electrical equipment and circuits from overloads and short circuits that can lead to equipment damage or downtime. This breaker features a thermal magnetic trip mechanism that responds to both overload conditions and fault currents. With a 65kA interrupting rating, the B345HH is well suited for applications where higher available fault current protection is needed. Its compact panelboard mounting design also helps save space inside electrical distribution equipment and control panels. The Siemens B345HH is commonly used in manufacturing facilities, HVAC systems, motor control applications, and commercial electrical distribution systems where dependable low-voltage circuit protection is important for daily operation.

Key Features and Benefits

• 45 amp molded case circuit breaker: Designed for commercial and industrial electrical systems.
• 3-pole configuration for three-phase systems: Suitable for three-phase electrical distribution applications.
• 240VAC voltage rating: Built for low-voltage electrical systems.
• 65kA interrupting capacity: Suitable for applications where higher available fault current protection is needed.
• Thermal magnetic trip protection: Helps protect against overloads and short circuits.
• Panelboard mounting design: Helps simplify installation in compatible electrical distribution equipment.
• Compact construction for space-saving installations: Helps save valuable space inside panels and control equipment.
• Suitable for commercial and industrial electrical systems: Designed for dependable everyday electrical protection.
• Helps protect against overloads and short circuits: Supports safe electrical system operation.
• UL 489 listed: Manufactured to meet recognized low-voltage electrical distribution standards.
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: B345HH
  
• Product Type: Molded Case Circuit Breaker
  
• Series: HBL
  
• Amperage Rating: 45 Amps
  
• Number of Poles: 3
  
• Voltage Rating: 240VAC
  
• Interrupt Rating: 65kAIC
  
• Trip Type: Thermal Magnetic
  
• Mounting Style: Panelboard Mounting
  
• Application: Electrical Distribution
  
• Standard: UL 489
  
• UPC: 783643306363
  
• 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 B345HH circuit breaker is manufactured to meet UL 489 standards for low-voltage electrical distribution systems.
  

Where It Works Best

• Commercial buildings
• Industrial facilities
• HVAC systems
• Motor control applications
• Manufacturing equipment
• Panelboards and switchboards
• Three-phase electrical systems
• High fault-current applications
• General power distribution systems