BJA36125 - 125Amp Circuit Breaker

BJA36125 - 125Amp Circuit Breaker

The Schneider Electric PowerPacT™ BJA36125 circuit breaker is a high-performance molded case circuit breaker designed to provide you with a dependable overcurrent and short-circuit protection in commercial, industrial, and institutional power distribution systems. Featuring a 125 Amp rating, 3-pole configuration, and thermal-magnetic trip unit, the BJA36125 delivers consistent circuit protection while helping you safeguard electrical equipment, conductors, and connected loads from potentially damaging fault conditions. Its compact PowerPacT B-Frame design allows for efficient installation in space-conscious electrical systems while maintaining the durability and performance expected in demanding applications.

Engineered with Schneider Electric’s advanced dual-break rotating contact technology, the BJA36125 helps reduce peak fault current during short-circuit events, contributing to enhanced system protection and improved equipment longevity. This breaker utilizes an I-Line connection on the line side and mechanical lugs on the load side, making it well-suited for panelboard and distribution applications where secure, efficient connections are essential.

Key Features and Benefits

• 125 Amp Current Rating – Provides reliable protection for branch and feeder circuits in commercial and industrial power distribution systems.
• Thermal-Magnetic Trip Unit – Delivers dependable overload protection and rapid response to short-circuit conditions to help minimize equipment damage and downtime.
• 3-Pole Design – Protects all three phases simultaneously, making it ideal for three-phase electrical systems and motor-driven applications.
• Dual-Break Rotating Contact Technology – Helps reduce peak fault current during short circuits, enhancing protection for connected electrical equipment.
• 25kA Interrupting Rating at 600Y/347VAC – Supports applications requiring dependable fault interruption in higher-voltage distribution systems.
• Interrupting Capacity Up to 100kA at 240VAC – Provides high-level fault protection for demanding electrical environments.
• I-Line Mounting Configuration – Enables fast, secure installation in compatible I-Line panelboards and distribution equipment.
• Mechanical Lug Load Connections – Accommodates a wide range of copper and aluminum conductors for installation flexibility.
• Integral Push-to-Trip Button – Allows quick manual testing of breaker functionality without creating an actual fault condition.
• Compact PowerPacT B-Frame Construction – Maximizes panel space while delivering powerful circuit protection.
• Accessory-Ready Design – Supports auxiliary switches, alarm switches, and voltage release accessories for expanded monitoring and control capabilities.
• HACR Rated – Suitable for heating, air conditioning, and refrigeration applications requiring reliable circuit protection.
• 20,000 Mechanical Operations – Designed for long service life in frequently operated electrical systems.
• UL, CSA, IEC, NOM, and CE Certified – Meets widely recognized industry standards for safety, quality, and performance.
  

Technical Specifications

• Manufacturer: Schneider Electric
  
• Product Family: PowerPacT™ B
  
• Catalog Number: BJA36125
  
• Frame Type: B-Frame
  
• Device Type: Molded Case Circuit Breaker
  
• Trip Unit Technology: Thermal-Magnetic
  
• Rated Current: 125A
  
• Number of Poles: 3
  
• Continuous Current Rating: 80%
  
• Phase Connection: ABC
  
• Mounting Style: I-Line
  
• Line Connection: I-Line Plug-On
  
• Load Connection: Mechanical Lugs
  
• Rated Operational Voltage: Up to 690VAC
  
• Frequency: 50/60 Hz
  
• Interrupting Rating:
  • 100kA @ 208Y/120VAC
  • 100kA @ 240VAC
  • 65kA @ 480VAC
  • 65kA @ 480/277VAC
  • 25kA @ 600Y/347VAC
  • 50kA @ 250VDC
• Rated Insulation Voltage (Ui): 800V
  
• Impulse Withstand Voltage (Uimp): 8kV
  
• Mechanical Endurance: 20,000 Operations
  
• Electrical Endurance: 10,000 Operations
  
• Wire Range:
  • AWG 14 to AWG 2/0 Copper or Aluminum
• Color: Gray (RAL 7016)
  
• Dimensions:
  • Height: 5.4 in.
  • Width: 3.2 in.
  • Depth: 3.5 in.
• Weight: Approximately 2.9 lbs.
  

Material Compliance and Certifications

• UL 489 Listed
• CSA Certified
• IEC 60947-2 Compliant
• IEC 60947-5-1 Compliant
• CE Marked
• NOM Certified
• CCC Certified
• EAC Certified
• NEMA AB1 Compliant
• GB 14048.2 Compliant
• IP40 Front Cover Protection Rating (IEC 60529)
• IK07 Impact Protection Rating (IEC 62262)
• Pollution Degree 3 Rated
  

Where It Works Best

• Commercial office buildings
• Manufacturing facilities
• Distribution panels and switchboards
• Industrial control systems
• Educational campuses
• Healthcare facilities
• Data centers
• Municipal and government buildings
• HVAC and refrigeration systems
• Utility and infrastructure projects
• Multi-tenant commercial properties
• Three-phase power distribution networks