ED43B125 - 125Amp Circuit Breaker

ED43B125 - 125 Amp Circuit Breaker

The ED43B125 molded case circuit breaker is designed to provide dependable overcurrent protection for commercial and industrial electrical distribution systems. Built on the reliable ED4 frame platform, this 3-pole, 125-amp breaker helps safeguard equipment and wiring from overloads and short circuits while supporting stable power distribution. With an interrupting capacity of 18kA at 480VAC and 65kA at 240VAC, it is well-suited for demanding applications where consistent circuit protection is essential. The breaker features a bolt-on mounting configuration for secure installation and includes load-side terminals, simplifying setup in panelboards and distribution equipment. Rated for 40°C operation and HACR applications, the ED43B125 circuit breaker is also suitable for reverse feed, providing flexibility for various system designs and retrofit projects.

Key Features and Benefits

• 125 Amp Continuous Rating: Designed to manage moderate-to-heavy electrical loads while maintaining consistent circuit protection.
• Three-Pole Protection: Ideal for protecting three-phase power systems commonly found in commercial and industrial facilities.
• High Interrupting Capacity: Rated 18kA at 480VAC and 65kA at 240VAC to help safely interrupt fault currents.
• Bolt-On Installation: Secure mounting reduces movement and ensures reliable electrical connections in compatible equipment.
• Includes Load-Side Terminals: Allows straightforward wiring during installation or replacement.
• HACR Rated: Suitable for heating, air conditioning, and refrigeration equipment applications.
• Reverse Feed Capable: Supports flexible installation configurations without compromising performance.
• 40°C Rated Operation: Built to operate effectively in standard electrical room and equipment temperatures.

Technical Specifications

• Part Number: ED43B125
  
• Breaker Type: Molded Case Circuit Breaker
  
• Frame Type: ED4
  
• Amperage Rating: 125 Amps
  
• Number of Poles: 3
  
• Voltage Rating: Up to 480VAC
  
• Interrupting Capacity:
  • 18kA @ 480VAC
  • 65kA @ 240VAC
• Mounting Type: Bolt-On
  
• Terminal Configuration: Includes load-side terminals
  
• Operating Temperature Rating: 40°C
  
• Special Ratings: HACR Rated, Suitable for Reverse Feed
  
• Approximate Shipping Weight: 3 lbs
  
• Approximate Height: 6.35 in
  

Material Compliance and Certifications

• Industry Standards: The ED43B125 molded case circuit breaker is manufactured to meet commonly recognized North American electrical safety and performance standards for molded case circuit breakers used in power distribution equipment.
• UL and CSA Requirements: These breakers are typically designed to comply with UL and CSA requirements applicable to their class, supporting safe integration into panelboards and electrical distribution systems used in commercial and industrial environments.
  

Where It Works Best

• Commercial buildings and office facilities
• Industrial manufacturing equipment
• HVAC and refrigeration systems
• Electrical distribution panels and switchboards
• Facility power distribution upgrades and maintenance projects