BQ1B050 - 50Amp Circuit Breaker

BQ1B050 - 50Amp Circuit Breaker

When dependable circuit protection is essential, the Siemens BQ1B050 50 Amp 1-Pole Circuit Breaker is designed to help keep compatible electrical systems operating safely and efficiently. As part of the Siemens BQ Series, this 50 amp bolt-on circuit breaker is commonly used in compatible Siemens panelboards and distribution equipment to help protect branch circuits from overloads and short circuits.

With a 50-amp rating, 120-volt capacity, and 10kAIC interrupting rating, the BQ1B050 is well suited for a variety of commercial, industrial, and institutional applications. The secure bolt-on mounting design helps provide a stable connection within compatible equipment, while the included load-side lugs simplify installation and replacement projects. Whether you're replacing an existing breaker, performing routine maintenance, or maintaining an established electrical system, this breaker provides the form, fit, and function required for compatible Siemens equipment.

Key Features and Benefits

• 50 Amp Current Rating: Designed to protect branch circuits requiring 50 amps of overcurrent protection.
• Single-Pole Configuration: Ideal for individual 120-volt branch circuit applications.
• 120 Volt Rating: Suitable for use in compatible low-voltage electrical systems.
• 10kAIC Interrupting Capacity: Capable of safely interrupting fault currents up to 10,000 amps.
• Bolt-On Mounting Design: Provides a secure and reliable connection within compatible Siemens equipment.
• Load-Side Lugs Included: Helps simplify installation and replacement projects.
• BQ Series Breaker: Designed for use in Siemens panelboards and electrical distribution systems requiring BQ-type breakers.
• Molded Case Circuit Breaker: Designed for branch circuit protection in compatible electrical distribution systems.
• Durable Construction: Designed for long-term use in properly maintained electrical systems.
• Form, Fit, and Function Replacement: Suitable when matching existing Siemens BQ-series breaker specifications.
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: BQ1B050
  
• Manufacturer Part Number (MFN): BQ1B050
  
• Product Series: BQ
  
• Product Family: Branch Circuit Breakers
  
• Product Type: Molded Case Circuit Breaker
  
• Number of Poles: 1
  
• Current Rating: 50 Amps
  
• Voltage Rating: 120 VAC
  
• Interrupting Capacity: 10kAIC
  
• Electrical Connection Type: Bolt-On
  
• Load-Side Lugs: Included
  
• Application: Electrical Distribution and Branch Circuit Protection
  
• Product Design: BQ
  
• Width: 1 in.
  
• Height: 4 in.
  
• Depth: 3 in.
  
• Packaging Dimensions:
  • Length: 2.571 in.
  • Width: 1.00 in.
  • Height: 3.736 in.
• Net Weight: 0.309 lb
  
• Country of Origin: Mexico
  
• Product Lifecycle Status: Active Product
  

Material Compliance and Certifications

• UL 489 Listed: For molded case circuit breaker applications.
• Manufactured in Accordance with Applicable Industry Standards: For branch circuit protection.
• Export Classification: EAR99
• Commodity Code: 8536200020
• Non-Hazardous: For transportation and handling.
• Designed for Use in Compatible Siemens Electrical Distribution Equipment.
  

Where It Works Best

• The Siemens BQ1B050 is commonly used in commercial buildings, schools, healthcare facilities, warehouses, retail spaces, and industrial properties that utilize Siemens electrical distribution equipment. Common applications include lighting circuits, receptacle circuits, control panels, dedicated equipment loads, and other branch circuit installations requiring a 50 amp breaker. Its 1-pole, 120-volt configuration makes it well suited for protecting individual circuits in compatible Siemens panelboards and distribution systems.