SJD69300G - 300Amp Circuit Breaker

SJD69300G - 300Amp Circuit Breaker

When you need a 300 Amp molded case circuit breaker that matches the form, fit, and function of your existing equipment, the SJD69300G is designed to deliver dependable circuit protection for commercial and industrial electrical systems. Built on the SJD400A frame, this 3-pole thermal-magnetic circuit breaker helps protect feeders and distribution equipment from overloads and short circuits, while offering adjustable trip settings that make it easier to coordinate protection within your electrical system.

One of the standout features of the SJD69300G is its adjustable electronic trip functions, giving qualified personnel the flexibility to tailor protection to the application's requirements. Adjustable settings include continuous current, long-time delay, instantaneous trip, ground-fault pickup, and ground-fault delay, helping the breaker work seamlessly with compatible distribution equipment. Built to last and intended as a form-fit-and-function replacement, this breaker is an excellent choice for maintaining existing electrical systems where compatibility matters.

Key Features and Benefits

• 300 Amp Continuous Current Rating: 300 Amp continuous current rating.
• Three-Pole Configuration: Three-pole configuration for three-phase electrical systems.
• Thermal Magnetic Molded Case Circuit Breaker: Thermal magnetic molded case circuit breaker.
• SJD400A Frame: Built on the SJD400A frame.
• Adjustable Trip Unit Includes:
  • Continuous Current Setting
  • Long Time Delay
  • Instantaneous Setting
  • Ground Fault Pickup
  • Ground Fault Delay
• Interrupting Capacity:
  • 25kA @ 600VAC
  • 35kA @ 480VAC
  • 65kA @ 240VAC
• Long-Lasting Service: Designed for long-lasting service in demanding electrical environments.
• Form, Fit, and Functional Replacement: Intended as a form, fit, and functional replacement for compatible equipment.
• Lug Terminals: Lug terminals are not included.
  

Technical Specifications

• Part Number: SJD69300G
  
• Type: SJD6-A
  
• Frame Size: SJD400A
  
• Circuit Breaker Type: Molded Case Circuit Breaker
  
• Trip Mechanism: Thermal Magnetic
  
• Poles: 3
  
• Amperage: 300A
  
• Interrupting Rating:
  • 25kA @ 600VAC
  • 35kA @ 480VAC
  • 65kA @ 240VAC
• Adjustable Trip Functions: Continuous Current Setting, Long Time Delay, Instantaneous Setting, Ground Fault Pickup, Ground Fault Delay
  
• Dimensions:
  • Height: 11.0 in.
  • Width: 7.5 in.
  • Depth: 4.0 in.
• Lug Terminals: Not Included
  

Material Compliance and Certifications

• Molded Case Circuit Breaker Construction: The SJD69300G is a molded-case circuit breaker designed for use in commercial and industrial power distribution systems. It is designed to meet the manufacturer's electrical ratings, including published interrupting capacities and adjustable trip characteristics.
• Installation Requirements: Before installation, always verify compatibility with existing electrical equipment and ensure compliance with applicable electrical codes and manufacturer recommendations.
  

Where It Works Best

• The SJD69300G is commonly used in commercial buildings, manufacturing facilities, institutional properties, and industrial electrical distribution systems that require a 300-amp, 3-pole molded-case circuit breaker. It is well-suited for switchboards, panelboards, feeder circuits, and other power distribution applications that require adjustable overcurrent and ground-fault protection. Because it is designed as a form-fit-and-function replacement, it helps keep compatible electrical systems operating without requiring modifications to the existing equipment.