BR370ST - 70 Amp Circuit Breaker

BR370ST - 70 Amp Circuit Breaker

The Eaton BR370ST is a 70 Amp, three-pole thermal magnetic circuit breaker with an integrated shunt trip, designed for use in compatible Eaton Type BR loadcenters. In addition to providing protection against overloads and short circuits, the shunt trip allows the breaker to be opened remotely when connected to an appropriate control circuit. This added capability makes it a practical option for installations where power may need to be disconnected without someone physically operating the breaker.

The BR370ST is often used in systems tied to emergency shutdown controls, fire alarm interfaces, safety circuits, and other applications where remote tripping is part of the overall design. The common-trip mechanism ensures that all three poles open together when a fault occurs, which is especially important in three-phase electrical systems and equipment protection applications.

Electricians frequently use the BR370ST when replacing existing breakers, upgrading electrical equipment, or maintaining facilities that already utilize Eaton BR panels.

You'll find this breaker in commercial buildings, manufacturing facilities, schools, apartment complexes, healthcare environments, and a variety of industrial settings.

Key Features and Benefits

• 70 Amp current rating for higher-capacity electrical circuits
• Three-pole configuration designed for three-phase power applications
• Factory-installed shunt trip enables remote electrical tripping and emergency shutdown functionality
• Thermal magnetic protection guards against overloads and short circuits
• Common-trip design disconnects all poles simultaneously during fault events
• Plug-on mounting simplifies installation in compatible Eaton Type BR loadcenters
• Rated for 240V AC applications
• 10 kAIC interrupting capacity
• Accepts both copper and aluminum conductors for installation flexibility
• Ideal for safety systems, HVAC equipment, motor protection, and industrial control applications
  

Technical Specifications

• Manufacturer: Eaton
  
• Catalog Number: BR370ST
  
• UPC: 786676003452
  
• Product Type: Thermal Magnetic Circuit Breaker
  
• Series: Type BR
  
• Circuit Breaker Type: BR
  
• Amperage Rating: 70A
  
• Voltage Rating: 240V AC
  
• Number of Poles: 3
  
• Trip Type: Common Trip
  
• Shunt Trip: Included
  
• Interrupt Rating: 10 kAIC
  
• Mounting Method: Plug-On
  
• Wire Size Compatibility: #4–1/0 AWG Copper/Aluminum
  
• Dimensions:
  • Depth: 3 in.
  • Width: 3 in.
  • Height: 3 in.
• Weight: 1.3 lb
  
• Warranty: Limited Lifetime Residential, 1 Year Commercial
  

Material Compliance and Certifications

• UL 489 Listed
• Federal Specifications Classification W-C375
• Manufactured to Eaton Type BR performance standards
• Designed for installation in compatible Eaton Type BR loadcenters
  

Where It Works Best

• The BR370ST is commonly installed in Eaton Type BR panels serving commercial buildings, manufacturing facilities, schools, healthcare environments, apartment complexes, and industrial operations. Its integrated shunt trip makes it especially useful in applications where remote breaker operation is required, including emergency shutdown systems, fire alarm interface circuits, access control systems, safety disconnect functions, and equipment protection applications.