BR350ST - 50 Amp Circuit Breaker

BR350ST - 50 Amp Circuit Breaker

If your application requires a 50 Amp, 3-pole breaker with a shunt trip, the Eaton BR350ST is designed for that purpose. This thermal-magnetic circuit breaker is used in compatible Eaton Type BR loadcenters and includes a factory-installed shunt trip, allowing the breaker to be opened remotely through a connected control circuit. It's commonly specified for systems that require emergency shutdown capability, remote disconnect functions, or integration with fire alarm and building control systems.

The BR350ST provides protection against overloads and short circuits while adding remote tripping capability in a single device. Its common-trip design means all three poles open together when the breaker trips, which is important in many three-phase installations.

Rated for 240V AC systems, the BR350ST carries a 10 kAIC interrupting rating and accepts #14–4 AWG copper or aluminum conductors. You'll often find this breaker protecting HVAC equipment, pumps, compressors, motor-driven machinery, control panels, and other three-phase loads where remote shutdown capability is part of the system design.

Key Features and Benefits

• 50 Amp circuit breaker rating
• Three-pole configuration
• Factory-installed shunt trip
• Thermal-magnetic trip mechanism
• Common-trip operation
• Type BR plug-on design
• Compatible with Eaton Type BR loadcenters
• Rated for 240V AC applications
• 10 kAIC interrupting capacity
• Accepts #14–4 AWG copper or aluminum conductors
• Frequently used where remote breaker operation is required
  

Technical Specifications

• Manufacturer: Eaton
  
• Catalog Number: BR350ST
  
• UPC: 786676003421
  
• Product Type: Thermal Magnetic Circuit Breaker
  
• Series: Type BR
  
• Circuit Breaker Type: BR
  
• Amperage Rating: 50 Amps
  
• Voltage Rating: 240V AC
  
• Number of Poles: 3
  
• Trip Type: Common Trip
  
• Shunt Trip: Included
  
• Mounting Method: Plug-On
  
• Interrupt Rating: 10 kAIC
  
• Wire Size Compatibility: #14–4 AWG Copper/Aluminum
  
• Used With: Type BR Loadcenters
  
• Dimensions:
  • Depth: 3 in.
  • Width: 3 in.
  • Height: 3 in.
• Weight: 1.3 lb
  
• Warranty: Limited Lifetime Residential Warranty; 1-Year Commercial Warranty
  

Material Compliance and Certifications

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

Where It Works Best

• The Eaton BR350ST is commonly installed in commercial buildings, manufacturing facilities, schools, healthcare environments, mechanical rooms, and industrial applications where remote power interruption is required. You'll often see it connected to emergency stop systems, fire alarm interfaces, building automation controls, equipment shutdown circuits, HVAC equipment, pumps, compressors, machinery, and other three-phase loads. It is also frequently used as a replacement breaker in existing Eaton Type BR loadcenters where a shunt trip breaker is already specified.