RJF36120 - 1200Amp Circuit Breaker

RJF36120 - 1200Amp Circuit Breaker

The RJF36120 is a 1200-amp, 3-pole PowerPact® R-Frame circuit breaker designed for high-capacity commercial and industrial electrical systems. Designed for dependable overcurrent protection, it combines a high interrupting capacity with an advanced Micrologic™ interchangeable ammeter electronic trip unit (Code 3.0A) to help protect equipment from overloads and short circuits. This breaker includes Long-Time and Instantaneous trip functions, providing electricians and maintenance teams with reliable protection where it matters most. The electronic trip unit also makes it easier to monitor system performance than traditional thermal-magnetic breakers, making it a practical choice for facilities that need consistent, predictable operation. Rated for 80% continuous loading at 40°C, the RJF36120 is commonly used in switchboards, panelboards, motor control centers, and other large power distribution systems. It offers interrupting ratings of 25kA at 600VAC, 65kA at 480VAC, and 100kA at 240VAC, making it suitable for a wide range of demanding electrical applications. Whether you're replacing an existing breaker or installing one in a new system, the RJF36120 delivers the current capacity and protection expected in today's commercial and industrial environments.

Key Features and Benefits

• 1200 Amp Current Rating: 1200 Amp current rating.
• 3-Pole Configuration: 3-pole configuration.
• PowerPact® R-Frame: PowerPact® R-Frame molded case circuit breaker.
• Micrologic™ Electronic Trip Unit: Micrologic™ interchangeable ammeter electronic trip unit (Code 3.0A).
• Protection Functions: Long Time (LT) and Instantaneous (INST) protection.
• 80% Rated: 80% rated for continuous operation.
• 40°C Ambient Conditions: Designed for 40°C ambient conditions.
• Interrupting Ratings:
  • 25kA @ 600VAC
  • 65kA @ 480VAC
  • 100kA @ 240VAC
• Equipment Protection: Helps protect electrical equipment from overloads and short circuits.
• Commercial and Industrial Applications: Suitable for commercial and industrial power distribution systems.
  

Technical Specifications

• Part Number: RJF36120
  
• Type: RJF
  
• Frame: PowerPact® R-Frame
  
• Poles: 3
  
• Amperage: 1200A
  
• Temperature Rating: 40°C
  
• Continuous Rating: 80%
  
• Trip Unit: Micrologic™ Interchangeable Ammeter Electronic Trip Unit (Code 3.0A)
  
• Protection Functions: Long Time (LT), Instantaneous (INST)
  
• Interrupting Rating: 25kA @ 600VAC
  
• Interrupting Rating: 65kA @ 480VAC
  
• Interrupting Rating: 100kA @ 240VAC
  
• Dimensions:
  • Height: 16.54 in.
  • Width: 16.24 in.
  • Depth: 6.63 in.

Material Compliance and Certifications

• Industry Standards: The RJF36120 is manufactured for commercial and industrial electrical applications and is designed to meet applicable standards for molded case circuit breakers.
• Compatibility Verification: Compliance and certifications may vary by production date and manufacturer documentation. Always confirm compatibility with local electrical codes and your project requirements before installation.
  

Where It Works Best

• The RJF36120 is a good fit for applications such as:
  • Manufacturing facilities
  • Commercial buildings
  • Data centers
  • Healthcare facilities
  • Educational campuses
  • Motor control centers
  • Switchboards
  • Panelboards
  • Main and feeder circuits
  • Large electrical distribution systems