Eaton Thermal Magnetic Circuit Breaker 40A Two-Pole 120/240V BR Type 10kAIC Plug-On Common Trip

Eaton Thermal Magnetic Circuit Breaker 40A Two-Pole 120/240V BR Type

Professional Electrical Circuit Protection Equipment

The Eaton BR Thermal Magnetic Circuit Breaker delivers exceptional electrical power management and control performance for residential and commercial electrical distribution systems. This 40A two-pole 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

• 40 Ampere Rating - Provides reliable overcurrent protection for medium-load residential and commercial circuits with precise thermal-magnetic trip characteristics
• Two-Pole Configuration - Delivers simultaneous protection for both hot conductors in 240V applications with common trip operation for enhanced electrical safety
• 10 kAIC Interrupt Rating - Safely interrupts fault currents up to 10,000 amperes, meeting residential and light commercial electrical protection requirements
• 120/240V Voltage Rating - Compatible with standard residential electrical systems and split-phase applications for versatile installation options

Installation & Design Features

• 1-Inch Plug-On Design - Space-efficient mounting system allows for maximum circuit density in BR loadcenters with secure electrical connection
• Common Trip Operation - Both poles trip simultaneously when overcurrent is detected on either conductor, ensuring complete circuit isolation for enhanced safety
• #14-4 AWG Cu/Al Wire Compatibility - Accommodates copper and aluminum conductors from 14 to 4 AWG for flexible wiring applications and professional installation

Technical Specifications

Amperage Rating: 40A, Voltage Rating: 120/240V, Number of Poles: Two-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" W x 2.5" H x 1.9" D, Weight: 0.55 lb, Certifications: UL 489, Compliances: Federal Specifications Classification W-C375, Used With: Type BR Loadcenters

Installation & Usage

1. Verify power is OFF at the main breaker and test with appropriate electrical testing equipment before beginning installation
2. Select appropriate position in BR loadcenter ensuring adequate clearance and proper phase assignment for two-pole application
3. Align circuit breaker with bus bars and firmly press plug-on connection until breaker seats completely against mounting rail
4. Connect circuit conductors to breaker terminals ensuring proper torque specifications and wire gauge compatibility (#14-4 AWG Cu/Al)
5. Verify secure mechanical and electrical connections, check proper breaker operation by testing trip mechanism
6. Label circuit directory clearly and restore power, testing circuit operation under normal load conditions

Professional Applications

Ideal for:

• Residential Electrical Systems - Main electrical panels, subpanels, and distribution boards requiring 40A two-pole protection for major appliances and HVAC systems
• Commercial Electrical Distribution - Light commercial facilities, office buildings, and retail spaces needing reliable circuit protection for equipment and lighting loads
• HVAC System Protection - Air conditioning units, heat pumps, and electric heating systems requiring dedicated 240V circuit protection
• Appliance Circuits - Electric ranges, dryers, water heaters, and other 240V appliances requiring dedicated overcurrent protection
• Workshop and Garage Applications - 240V equipment, welders, compressors, and heavy-duty tools requiring robust electrical protection
• Electrical Panel Upgrades - Replacement and retrofit applications in existing BR loadcenters for improved electrical safety and code compliance
• New Construction Projects - Residential and light commercial electrical installations requiring UL 489 listed circuit protection devices
• Electrical Maintenance - Service and repair applications where reliable thermal-magnetic protection is essential for electrical system integrity

Thermal-Magnetic Protection Advantage

The thermal-magnetic trip mechanism provides dual protection against overcurrent conditions - the thermal element responds to sustained overloads while the magnetic element provides instantaneous protection against short circuits and ground faults. This proven technology ensures reliable electrical protection without nuisance tripping, making it ideal for professional electrical installations where dependable performance is critical.

Why Choose Eaton Quality?

With over a century of electrical power management innovation, Eaton delivers the quality and reliability that electrical professionals trust. Every BR circuit breaker is UL 489 listed and manufactured to the highest standards, providing consistent performance and electrical safety. Trusted by electricians, electrical contractors, and facility professionals worldwide, Eaton's commitment to intelligent power management ensures your electrical systems operate safely and efficiently for years to come.