BQ2B090 - 90Amp Circuit Breaker

BQ2B090 - 90Amp Circuit Breaker

The Siemens BQ2B090 is a 90-amp, 2-pole molded case circuit breaker for your 120/240V electrical distribution systems. It is designed to provide overcurrent protection for branch and feeder circuits, disconnecting power when overloads or short circuits occur. The common-trip mechanism opens both poles simultaneously during a fault, making it suitable for applications that require two-pole circuit protection.

As part of the Siemens BQ series, the BQ2B090 features a bolt-on mounting design and comes with load-side lugs included. Its compact size allows it to fit into compatible panelboards, load centers, and distribution equipment while maintaining the current capacity required for larger electrical loads. With a 10 kA interrupting rating, the breaker is suitable for a wide range of commercial, residential, and light industrial electrical systems.

The BQ2B090 is commonly installed during panel upgrades, equipment replacements, and new construction projects. Typical applications include HVAC equipment, distribution panels, apartment buildings, retail spaces, office buildings, schools, and warehouse facilities where a 90-amp, 2-pole breaker is specified.

Key Features and Benefits

• 90 amp continuous current rating: 90 amp continuous current rating.
• 2-pole common-trip configuration: 2-pole common-trip configuration.
• Rated for 120/240 VAC electrical systems: Rated for 120/240 VAC electrical systems.
• 10 kA interrupting capacity: 10 kA interrupting capacity.
• Bolt-on mounting design: Bolt-on mounting design.
• Load-side lugs included: Load-side lugs included.
• Compact molded case construction: Compact molded case construction.
• Suitable for branch and feeder circuit protection: Suitable for branch and feeder circuit protection.
• Compatible with a variety of electrical distribution applications: Compatible with a variety of electrical distribution applications.
  

Technical Specifications

• Catalog Number: BQ2B090
  
• Manufacturer: Siemens
  
• Product Series: BQ
  
• Product Type: Molded Case Circuit Breaker
  
• Ampere Rating: 90 Amps
  
• Number of Poles: 2
  
• Trip Configuration: Common Trip
  
• Voltage Rating: 120/240 VAC
  
• Interrupting Rating (AIR): 10 kA
  
• Electrical Connection Type: Bolt-On
  
• Included Features: Load Side Lugs
  
• Suitable For: Electrical Distribution
  
• Dimensions:
  • Width: 2 in.
  • Height: 4 in.
  • Depth: 3 in.
• Net Weight: 0.28 kg
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

• Industry Standards: The Siemens BQ2B090 is UL 489 listed and manufactured for use in low-voltage electrical distribution systems. It is designed to meet applicable industry requirements for circuit breaker performance and safety when installed according to manufacturer specifications.
• UL Standards: UL 489 listed.
  

Where It Works Best

• The BQ2B090 is commonly used in panelboards, load centers, feeder circuits, branch circuits, HVAC systems, and electrical distribution equipment. It is frequently installed in office buildings, retail centers, schools, apartment complexes, warehouses, and light industrial facilities where 90-amp circuit protection is required.