SLD69300NT - 300Amp Circuit Breaker

SLD69300NT - 300Amp Circuit Breaker

The SLD69300NT is a 3-pole, 300-amp thermal-magnetic molded-case circuit breaker designed for use in your electrical distribution systems that require dependable overcurrent and short-circuit protection. Built on the SLD600A frame, this breaker is a direct form, fit, and functional replacement for compatible installations where the original specifications must be maintained. Its adjustable trip unit provides multiple field-adjustable protection settings, allowing qualified personnel to tailor protection to the application's operating requirements. With interrupting ratings of 25kA at 600VAC, 35kA at 480VAC, and 65kA at 240VAC, the SLD69300NT is well-suited for your commercial and industrial power distribution systems operating within its listed ratings. This model is built to last and is supplied without lug terminals, allowing the correct lugs to be selected based on the installation requirements.

Key Features and Benefits

• Current Rating: 300 Amp continuous current rating.
• 3-Pole Configuration: 3-pole configuration for three-phase electrical systems.
• Thermal Magnetic Trip Mechanism: Thermal magnetic trip mechanism for overload and short-circuit protection.
• Frame Design: SLD600A frame design for compatible replacement applications.
• Adjustable Trip Unit Functions: Continuous Current Setting, Long Time Delay, Instantaneous Setting, Short Time Pick Up, Short Time Delay, and Short Time I²t Pick Up.
• Interrupting Capacity: 25kA @ 600VAC, 35kA @ 480VAC, and 65kA @ 240VAC.
• Protection Coordination: Designed to help maintain proper protection coordination in compatible systems.
• Built for Long Service Life: Built for long service life in demanding electrical environments.
• Lug Terminals: Does not include lug terminals.
  

Technical Specifications

• Part Number: SLD69300NT
  
• Type: SLD6-A
  
• Circuit Breaker Type: Molded Case Circuit Breaker
  
• Trip Type: Thermal Magnetic
  
• Frame Size: SLD600A
  
• Poles: 3
  
• Current Rating: 300 Amps
  
• Voltage & Interrupting Rating: 25kA @ 600VAC; 35kA @ 480VAC; 65kA @ 240VAC
  
• Adjustable Trip Functions: Continuous Current Setting, Long Time Delay, Instantaneous Setting, Short Time Pick Up, Short Time Delay, Short Time I²t Pick Up
  
• Lug Terminals: Not Included
  
• Dimensions:
  • Height: 11.0 in.
  • Width: 7.5 in.
  • Depth: 4.0 in.

Material Compliance and Certifications

• Application: The SLD69300NT is manufactured for use in commercial and industrial electrical power distribution systems.
• Installation Requirements: It is intended to be installed and serviced by qualified electrical professionals in accordance with applicable electrical codes and manufacturer requirements. Always verify compatibility, interrupting ratings, frame size, and application requirements before installation.
  

Where It Works Best

• The SLD69300NT is well-suited for a wide range of electrical distribution applications where a 300A, 3-pole thermal-magnetic molded-case circuit breaker with an SLD600A frame is required. It is commonly used in commercial buildings, industrial facilities, manufacturing plants, equipment distribution panels, switchboards, motor distribution systems, and other power distribution equipment requiring a compatible replacement breaker with adjustable trip settings. Its combination of field-adjustable protection functions and established interrupting ratings makes it an appropriate choice for maintaining the original design intent and protection characteristics of compatible electrical systems.