CSR2125N - 125Amp Circuit Breaker

CSR2125N - 125Amp Circuit Breaker

The Eaton CSR2125N Main Circuit Breaker is a dependable 125-amp, two-pole circuit breaker designed to serve as the primary disconnect and overcurrent protection device in compatible Type ECC Unit Enclosures. Built for residential and light commercial electrical systems, this breaker helps protect electrical equipment and wiring from overloads and short circuits while providing a convenient means of disconnecting power when maintenance or service is required.

Featuring a 120/240V AC rating and a 25 kAIC interrupting capacity, the CSR2125N is engineered to meet the demands of modern electrical distribution systems. Its versatile conductor range accommodates both copper and aluminum wiring from #2 AWG through 300 kcmil, making it a practical choice for new installations, service upgrades, and replacement applications. Manufactured by Eaton and certified to UL 489 standards, this main breaker is designed to deliver reliable performance, long service life, and compatibility with specified Eaton enclosure systems. Whether you're upgrading existing service equipment or replacing a worn main breaker, the Eaton CSR2125N provides the protection and functionality needed to keep electrical systems operating safely and efficiently.

Key Features and Benefits

• 125-amp main circuit breaker for service entrance and distribution applications
• Two-pole design for 120/240V electrical systems
• Functions as the main disconnect and overcurrent protection device
• 25 kAIC interrupting rating for dependable fault-current protection
• Compatible with Eaton Type ECC Unit Enclosures
• Accepts #2 AWG to 300 kcmil copper or aluminum conductors
• Designed for residential and light commercial electrical systems
• UL 489 Listed for safety and performance compliance
• Backed by Eaton's limited lifetime warranty
• Suitable for service upgrades, equipment replacements, and new installations
  

Technical Specifications

• Manufacturer: Eaton
  
• Catalog Number: CSR2125N
  
• UPC: 782114019733
  
• Product Type: Main Circuit Breaker
  
• Circuit Breaker Frame Type: CSR
  
• Main Circuit Breaker Type: CH
  
• Amperage Rating: 125 A
  
• Voltage Rating: 120/240 V AC
  
• Number of Poles: 2
  
• Interrupt Rating: 25 kAIC
  
• Wire Size Range: #2 AWG – 300 kcmil Cu/Al
  
• Used With: Type ECC Unit Enclosures
  
• Dimensions:
  • Length: 3.1 in.
  • Width: 2 in.
  • Height: 3.1 in.
• Weight: 2.5 lb
  
• Warranty: Limited Lifetime
  
• UPC: 782114019733
  

Material Compliance and Certifications

The Eaton CSR2125N is UL 489 Listed, demonstrating compliance with recognized industry safety and performance standards for molded-case circuit breakers. This certification helps ensure the breaker meets stringent requirements for overcurrent protection in residential and commercial electrical applications. The breaker is manufactured to Eaton's quality standards and is supported by a limited lifetime warranty.

Where It Works Best

• Residential service entrance equipment
• Single-family homes and residential upgrades
• Apartment and condominium electrical systems
• Light commercial facilities
• Electrical panel modernization projects
• Main breaker replacement applications
• New construction electrical installations
• Compatible Eaton Type ECC Unit Enclosures

For electricians, contractors, facility managers, and property owners seeking a reliable replacement or upgrade solution, the Eaton CSR2125N offers the right combination of capacity, protection, and enclosure compatibility. Its 125-amp rating makes it an excellent fit for a variety of electrical service applications, while its UL-listed design and Eaton engineering provide confidence in long-term performance and safety.