Eaton BW2125 | 125A 2-Pole BW Series Main Circuit Breaker

Main Description:

The Eaton BW2125 is a robust BW Series main circuit breaker engineered for dependable overcurrent and short-circuit protection in residential, commercial, and light industrial electrical systems. Rated at 125A and 120/240 VAC, this breaker features thermal magnetic LI (Long-Time and Instantaneous) protection, delivering reliable fault response and long-term circuit stability. Designed for BR-compatible plug-on systems, the BW2125 supports a wide conductor range and offers a straightforward installation process, making it a versatile solution for panel upgrades, service equipment, and main disconnect applications.

Technical Overview:

• Manufacturer: Eaton / Cutler-Hammer

• Part Number: BW2125

• Product Type: Main Circuit Breaker

• Category: Molded Case Circuit Breaker

• Subcategory: Main / Loadcenter Breaker

• Family: BW Series

• Type: BW

• Voltage Rating: 120/240 VAC

• Amperage Rating: 125 A

• Phase: 1

• Poles: 2

• Interrupting Capacity: 10 kAIC @ 240V

• Protection: Thermal Magnetic

• Trip Functions: LI – Long-Time and Instantaneous

• Connection Type: Plug-On (BR Style)

• Conductor Range: #2 AWG to 300 kcmil (Cu/Al)

• Mounting: Suitable for Type ECB unit enclosures

• AIC Ratings: 10 kA at 240V

• Warranty: Standard Eaton Warranty

• Condition: New/Never Used Surplus

Key Features:

• 125A BW Series main circuit breaker

• 2-pole design for 120/240V systems

• Thermal magnetic LI protection for overloads and short circuits

• 10 kAIC interrupt rating

• BR plug-on mounting for fast installation

• Wide conductor compatibility: #2 AWG to 300 kcmil Cu/Al

• Ideal for service disconnects and main breaker panel applications

• Eaton/Cutler-Hammer quality and reliability