BQ3B070H - 70Amp Circuit Breaker

BQ3B070H - 70Amp Circuit Breaker

The Siemens BQ3B070H is a 70-amp, 3-pole molded case circuit breaker for your 240V systems. Its common-trip design opens all three poles at the same time during an overload or short circuit, helping protect your wiring and connected equipment. This breaker includes a 24V auxiliary switch and factory-installed load-side lugs, with a bolt-on connection for straightforward installation in Siemens-compatible panelboards and distribution equipment.

Rated for 22 kA interrupting capacity and UL 489 listed, the BQ3B070H is used in commercial offices, schools, retail spaces, warehouses, and light industrial facilities. Its compact molded case fits neatly in panels and load centers, providing 3-pole protection for branch circuits, feeder circuits, and HVAC systems. It’s suitable for replacements or maintenance in existing Siemens systems, especially where monitoring or control via the auxiliary switch is needed.

Key Features and Benefits

• 70 amp continuous current rating
• 3-pole common-trip design
• Rated for 240 VAC systems
• 22 kA interrupting rating (AIR)
• 24V auxiliary switch
• Bolt-on mounting
• Load-side lugs included
• Molded case construction
• UL 489 Listed
  

Technical Specifications

• Catalog Number: BQ3B070H
  
• Manufacturer: Siemens
  
• Series: BQH
  
• Ampere Rating: 70 Amps
  
• Number of Poles: 3
  
• Voltage Rating: 240 VAC
  
• Interrupting Rating: 22 kA AIR
  
• Trip Type: Common Trip
  
• Connection Type: Bolt-On
  
• Dimensions: 4 in. H × 3 in. W × 3 in. D
  
• Net Weight: 1.146 lb
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

• UL 489 Listed
• Built to Siemens standards for low-voltage distribution systems
  

Where It Works Best

• Installed in panelboards, load centers, branch circuits, feeders, and HVAC systems. Found in offices, schools, retail locations, apartment buildings, warehouses, and light industrial facilities where a 70-amp, 3-pole breaker with a 24V auxiliary switch and 22 kA interrupting rating is required.