Eaton BR Thermal Magnetic Circuit Breaker
Professional Three-Pole Circuit Protection
The Eaton BR Thermal Magnetic Circuit Breaker delivers exceptional electrical power management and control performance for residential and commercial electrical distribution systems. This 20A three-pole 240V circuit breaker provides reliable electrical protection designed for professional electricians, electrical contractors, and facility managers, offering the proven reliability and advanced technology that professionals trust from the global leader in intelligent power management.
Professional Features & Benefits
Electrical Protection Performance
- 20 Ampere Rating - Provides precise overcurrent protection for medium-duty electrical circuits with reliable thermal-magnetic trip operation
- Three-Pole Configuration - Delivers simultaneous protection across all three phases with common trip operation for balanced electrical systems
- 240V Voltage Rating - Engineered for standard residential and light commercial voltage applications with dependable performance
- 10 kAIC Interrupt Rating - Safely interrupts fault currents up to 10,000 amperes for comprehensive electrical system protection
Installation & Connection
- Plug-On Mounting Method - Quick and secure installation into Type BR loadcenters with positive electrical connection
- #14-4 AWG Cu/Al Wire Compatibility - Accommodates copper and aluminum conductors for flexible wiring applications
- Common Trip Operation - All three poles trip simultaneously for coordinated protection and electrical safety
Professional Quality Construction
- UL 489 Listed - Meets rigorous safety standards for molded case circuit breakers and electrical protection devices
- Compact 1-Inch Design - Space-efficient profile maximizes panel capacity while maintaining full protection capabilities
Technical Specifications
Amperage Rating: 20A, Voltage Rating: 240V, Number of Poles: Three-pole, Interrupt Rating: 10 kAIC, Circuit Breaker Type: BR, Trip Type: Common breaker trip, Mounting Method: Plug-on, Wire Size: #14-4 AWG Cu/Al, Dimensions: 2.9" L x 2.9" W x 2.7" H, Weight: 0.95 lb, Certifications: UL 489, Compliances: Federal Specifications Classification W-C375, Used With: Type BR Loadcenters
Installation & Usage
- Verify power is OFF and test electrical panel with appropriate safety equipment before beginning installation
- Select appropriate three-pole position in Type BR loadcenter matching the 20A circuit requirements
- Align circuit breaker with bus bars and firmly press plug-on connection until fully seated
- Connect #14-4 AWG copper or aluminum conductors to load terminals following NEC wiring methods
- Verify proper wire termination torque and conductor positioning for reliable electrical connection
- Test circuit breaker operation and verify proper three-pole common trip functionality before energizing
Professional Applications
Ideal for:
- Residential Electrical Systems - Main panels, subpanels, and electrical distribution for homes and apartments
- Commercial Building Power - Office buildings, retail spaces, and light commercial electrical protection
- HVAC Equipment Protection - Air conditioning units, heat pumps, and three-phase heating systems
- Motor Control Applications - Three-phase motor protection for pumps, fans, and industrial equipment
- Electrical Panel Upgrades - Replacement and retrofit applications in existing Type BR loadcenters
- Multi-Family Housing - Apartment complexes, condominiums, and residential electrical distribution
- Small Commercial Facilities - Restaurants, shops, and service businesses requiring reliable electrical protection
- Electrical Safety Systems - Overcurrent protection for balanced three-phase electrical loads
Thermal-Magnetic Technology Advantage
Eaton's proven thermal-magnetic trip technology combines bimetallic thermal elements for overload protection with magnetic trip units for short-circuit protection, delivering precise and reliable circuit protection across the full range of electrical fault conditions while maintaining excellent coordination with upstream and downstream protective devices.
Why Choose Eaton Quality?
With over a century of electrical power management innovation, Eaton delivers the quality, reliability, and safety that electrical professionals demand. Every BR series circuit breaker is UL listed and engineered to exceed industry standards, providing the dependable performance that electricians, electrical contractors, and facility managers trust for critical electrical protection applications worldwide.
EAT-BR320 - spec sheet
Manufacturer Resources
Product Specs
- Amperage Rating:
- 20 A
- Certifications:
- UL 489
- Circuit Breaker Type:
- BR
- Compliances:
- Federal Specifications Classification W-C375
- Interrupt Rating:
- 10 kAIC
- Main Circuit Breaker:
- BR
- Mounting Method:
- Plug-on
- Number Of Poles:
- Three-pole
- Product Height:
- 2.7 in
- Product Length Depth:
- 2.9 in
- Product Type:
- Thermal Magnetic Circuit Breaker
- Product Weight:
- .95 lb
- Product Width:
- 2.9 in
- Trip Type:
- Common breaker trip
- Used With:
- Type BR Loadcenters
- Voltage Rating:
- 240 V - 240 V
- Wire Size:
- #14-4 AWG Cu/Al
- Product Group:
- Electrical
- Product Subgroup:
- Circuit Breaker
- Department:
- Electrical
- Item Quantity:
- 28