BQ3B070 - 70Amp Circuit Breaker

BQ3B070 - 70Amp Circuit Breaker

The Siemens BQ3B070 is a 70-amp, 3-pole circuit breaker designed for use in 240V electrical distribution systems. As part of the Siemens Type BQ family, it provides overcurrent protection for your branch and feeder circuits in compatible panelboards and electrical equipment. The common-trip mechanism opens all three poles simultaneously when a fault occurs, helping protect connected conductors and equipment.

This breaker features a bolt-on mounting design and includes load-side lugs for installation. With a 10 kA interrupting rating, the BQ3B070 is commonly found in commercial buildings, schools, retail facilities, warehouses, and other applications where three-phase power distribution is required. Its compact molded case construction allows it to fit into compatible Siemens equipment while providing the protection expected from a UL 489 listed circuit breaker.

Key Features and Benefits

• 70 amp continuous current rating
• Three-pole common-trip configuration
• Rated for 240 VAC applications
• 10 kA interrupting rating (AIR)
• Bolt-on mounting design
• Load-side lugs included
• Molded case circuit breaker construction
• Designed for branch and feeder circuit protection
• Compatible with Siemens Type BQ applications
  

Technical Specifications

• Catalog Number: BQ3B070
  
• Manufacturer: Siemens
  
• Product Type: Molded Case Circuit Breaker
  
• Series: BQ
  
• Amp Rating: 70 Amps
  
• Number of Poles: 3
  
• Voltage Rating: 240 VAC
  
• Interrupting Rating: 10 kA AIR
  
• Trip Type: Common Trip
  
• Connection Type: Bolt-On
  
• Included Feature: Load-Side Lugs
  
• Height: 3 in.
  
• Width: 3 in.
  
• Depth: 4 in.
  
• Weight: 1.014 lb
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

• UL 489 Listed
  
• Manufactured for low-voltage electrical distribution applications
  
• Suitable for use in accordance with applicable electrical codes and installation requirements
  

Where It Works Best

• The Siemens BQ3B070 is commonly used in panelboards, load centers, feeder circuits, branch circuits, HVAC equipment, and three-phase electrical distribution systems. Typical installations include commercial offices, schools, retail stores, apartment buildings, warehouses, and light industrial facilities where a 70-amp, 3-pole, 240V circuit breaker is specified.