Eaton Cutler-Hammer BR345 45A 3P 240V Circuit Breaker, Type BR, Plug-On | AmpState

Introducing the Eaton Cutler-Hammer BR345 45A 3P 240V circuit breaker—a Type BR plug-on device designed for everyday electrical protection in panelboards, load centers, and distribution systems. With a 3-pole, 240V configuration and a 45-amp rating, this BR-series breaker is built to safeguard three-phase circuits reliably in commercial and industrial environments.

Why the BR345 stands out

• Direct part-number match: A precise BR family component that simplifies replacements, spare inventory, and maintenance workflows where exact part matching matters.
• Three-pole, 45 A at 240 V: Delivers targeted protection for 3-phase circuits in standard 240V systems, helping prevent overcurrent conditions.
• Type BR, Plug-On: The plug-on design integrates smoothly with BR-series panelboards and distribution equipment, facilitating straightforward installation and service.
• Versatile compatibility: Suitable for use in panelboards, load centers, and electrical distribution configurations that accept BR-type breakers.

Specifications

• Manufacturer: Eaton Cutler-Hammer
• Part Number: BR345
• Product Type: Circuit Breaker
• Amperage: 45 A
• Poles: 3 Poles
• Voltage: 240V
• Type: BR (Plug-On)
• Availability: AmpState

Ideal for

• Maintenance teams seeking reliable, compatible replacements for BR-series protection devices
• Panel builders planning precise BR345 part-number integrations into new or retrofit projects
• Emergency spare inventory for critical electrical distribution systems

Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.