SHJD69300 - 300Amp Circuit Breaker

SHJD69300 - 300Amp Circuit Breaker

When your electrical system calls for dependable overcurrent protection, the SHJD69300 molded case circuit breaker delivers the ratings and adjustable protection needed for many commercial and industrial applications. Designed on the SJD 400 Amp frame, this 3-pole, 300 Amp thermal magnetic circuit breaker is built for use in compatible electrical distribution equipment where maintaining the original form, fit, and function is important.

One feature that sets this breaker apart is its adjustable SHJD6-A trip unit, allowing qualified professionals to tailor the continuous current setting, long-time delay, and instantaneous trip settings to the specific needs of the installation. This added flexibility makes it well suited for a variety of power distribution applications while helping protect connected equipment from overloads and short circuits.

With interrupting ratings of 35kA at 600VAC, 65kA at 480VAC, and 100kA at 240VAC, the SHJD69300 is designed to meet the demands of many commercial and industrial electrical systems. Its molded case construction is built to last, making it a dependable choice for maintaining existing equipment and minimizing downtime during maintenance or replacement projects.

Key Features and Benefits

• 300 Amp Current Rating: 300 Amp current rating for commercial and industrial power distribution.
• Three-Pole Design: Three-pole design for three-phase electrical systems.
• Thermal Magnetic Trip Mechanism: Thermal magnetic trip mechanism provides overload and short-circuit protection.
• Adjustable SHJD6-A Trip Unit: Includes adjustable Continuous Current Setting, Long Time Delay, and Instantaneous Setting.
• SJD 400 Amp Frame: Built on the SJD 400 Amp frame.
• Interrupting Capacity:
  • 35kA @ 600VAC
  • 65kA @ 480VAC
  • 100kA @ 240VAC
• Form, Fit, and Functional Replacement: Designed as a form, fit, and functional replacement for compatible equipment.
• Durable Molded Case Construction: Durable molded case construction built to last.
• Lug Terminals: Lug terminals are not included.
  

Technical Specifications

• Part Number: SHJD69300
  
• Type: SHJD6-A
  
• Circuit Breaker Type: Molded Case Circuit Breaker
  
• Frame Size: SJD 400 Amp Frame
  
• Trip Unit: Thermal Magnetic
  
• Poles: 3
  
• Amperage: 300 Amps
  
• Interrupting Rating: 35kA @ 600VAC; 65kA @ 480VAC; 100kA @ 240VAC
  
• Adjustable Functions: Continuous Current Setting, Long Time Delay, Instantaneous Setting
  
• Dimensions:
  • Height: 11.0 in.
  • Width: 7.5 in.
  • Depth: 4.0 in.
• Lug Terminals: Not Included
  

Material Compliance and Certifications

• Installation Requirements: The SHJD69300 is a molded case circuit breaker designed for installation in compatible low-voltage electrical distribution systems. It is manufactured to meet its published electrical ratings and is intended for installation by qualified personnel in accordance with applicable electrical codes, equipment manufacturer requirements, and accepted industry practices.
• Compatibility: Always verify compatibility with your existing equipment before installation.
  

Where It Works Best

• The SHJD69300 is commonly used in commercial buildings, manufacturing facilities, industrial plants, institutional properties, and other three-phase electrical distribution systems requiring a 300 Amp molded case circuit breaker. Its adjustable trip unit makes it a practical solution for switchboards, panelboards, motor control equipment, and distribution assemblies where application-specific protection settings are desired. As a form, fit, and functional replacement for compatible equipment, it helps keep existing electrical systems operating without requiring modifications to the original installation.