QJ23B125H - 125Amp Circuit Breaker

QJ23B125H - 125Amp Circuit Breaker

The QJ23B125H is a 125 amp, 3-pole molded case circuit breaker designed for use in your electrical distribution systems requiring dependable branch or feeder circuit protection. Built with a 42kA interrupting rating at 240VAC, this breaker is well-suited for applications where higher available fault current must be safely interrupted. As a Type QJ2H breaker, it is intended as a form, fit, and functional replacement for compatible panelboards and switchboards that accept this breaker type. Rated for 40°C operation, HACR applications, and supplied with load-side lugs, the QJ23B125H provides the features needed for straightforward installation and dependable service. Built to last, it is an excellent choice for maintaining existing electrical systems while helping you to provide reliable overcurrent and short-circuit protection.

Key Features and Benefits

• 125 amp current rating for commercial and industrial power distribution.
• 3-pole configuration for protecting three-phase electrical circuits.
• 42 kA interrupting capacity at 240 VAC for applications with higher available fault current.
• Type QJ2H design for compatible form, fit, and functional replacement.
• Molded case construction designed for long-term durability.
• Rated for 40°C operation, suitable for operation in 40°C ambient temperatures.
• HACR Rated for use in heating, air conditioning, and refrigeration equipment where applicable.
• Load-side lugs included help simplify installation.
• Equipment protection helps protect electrical equipment from overloads and short circuits.
  

Technical Specifications

• Part Number: QJ23B125H
  
• Type: QJ2H
  
• Product Type: Molded Case Circuit Breaker
  
• Amperage: 125 Amps
  
• Poles: 3
  
• Interrupting Rating: 42kA @ 240VAC
  
• Voltage Rating: 240VAC
  
• Ambient Temperature Rating: 40°C
  
• HACR Rated: Yes
  
• Load-Side Lugs: Included
  
• Dimensions:
  • Height: 7.0 in.
  • Width: 4.5 in.
  • Depth: 2.53 in.

Material Compliance and Certifications

• HACR rated for qualifying heating, air conditioning, and refrigeration applications.
• Molded case circuit breaker manufactured as a molded case circuit breaker for overcurrent and short-circuit protection.
• Rated for operation in 40°C ambient conditions.
• Designed to meet the published electrical ratings and dimensional requirements of the Type QJ2H product family.
  

Where It Works Best

• The QJ23B125H is commonly used in commercial buildings, industrial facilities, institutional properties, and other three-phase electrical distribution systems where a 125 amp, 3-pole breaker with a 42kA interrupting rating at 240VAC is required. It is particularly well-suited for maintaining compatible legacy panelboards and switchboards, serving as a form, fit, and functional replacement that supports continued operation of existing electrical infrastructure. Its HACR rating also makes it suitable for compatible HVAC and refrigeration equipment installations.