SCLD69300NGT - 300Amp Circuit Breaker

SCLD69300NGT - 300Amp Circuit Breaker

The Siemens SCLD69300NGT circuit breaker is a 300-amp, 3-pole molded-case circuit breaker (MCCB) for your compatible commercial and industrial electrical distribution systems. Part of the Siemens SENTRON series, this LD-frame circuit breaker features an electronic SensiTrip trip unit with LSIG protection: long-time, short-time, instantaneous, and ground-fault functions. For maintenance professionals working with existing electrical installations, the SCLD69300NGT offers a specific combination of current rating, interrupting capacity, protection functions, and physical dimensions for applications that require this breaker configuration.

Key Features and Benefits

• 300-Amp Current Rating: Designed for applications requiring a 300A molded case circuit breaker.
• Three-Pole Construction: Intended for compatible three-phase electrical distribution equipment.
• 600V AC Voltage Rating: Supports use in systems within the manufacturer's specified voltage rating.
• Siemens LD Frame: Helps identify the correct physical frame configuration for existing electrical assemblies.
• Electronic SensiTrip Protection: Uses an electronic trip unit with four specified protection functions.
• Long-Time Protection: Addresses sustained overcurrent conditions.
• Short-Time Protection: Provides a distinct short-time trip function for applicable short-circuit conditions.
• Instantaneous Protection: Responds to short-circuit conditions through the instantaneous trip function.
• Ground-Fault Protection: Includes ground-fault functionality for systems designed to use this protection feature.
• TA2J6500 Line and Load Lugs: Includes designated conductor connections on both sides of the breaker.

Technical Specifications

• Manufacturer: Siemens
  
• Product Series: SENTRON
  
• Catalog Number: SCLD69300NGT
  
• Manufacturer Part Number (MFN): SCLD69300NGT
  
• Article Number: US2
  
• Product Type: Molded Case Circuit Breaker (MCCB)
  
• Frame Type: LD
  
• Rated Current: 300 Amps
  
• Number of Poles: 3
  
• Rated Voltage: 600V AC
  
• Interrupting Capacity at 600V AC: 100kAIC
  
• Interrupting Capacity at 480V AC: 150kAIC
  
• Trip Unit Type: Electronic Trip Unit (ETU)
  
• Trip Technology: Siemens SensiTrip
  
• Trip Configuration: LSIG
  
• Long-Time Protection: Yes
  
• Short-Time Protection: Yes
  
• Instantaneous Protection: Yes
  
• Ground-Fault Protection: Yes
  
• Breaking-Capacity Design: Current Limiting
  
• Standard Breaker Temperature Reference: 40°C
  
• Line-Side Lugs: TA2J6500
  
• Load-Side Lugs: TA2J6500
  
• Copper Conductor Range: 3/0 AWG–500 kcmil
  
• Aluminum Conductor Range: 4/0 AWG–500 kcmil
  
• Width: 7.50 inches
  
• Height: 17.86 inches
  
• Depth: 4.00 inches
  
• Net Weight: 34.00 lb
  
• UPC: 783643217591
  
• Catalog ID: LV10.1
  
• Siemens Product Group: 3741
  
• Group Code: P360
  
• Commodity Code: 8536200020
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

The Siemens SCLD69300NGT molded case circuit breaker has manufacturer-documented standards and environmental compliance information relevant to electrical equipment selection and maintenance.

• UL 489: Siemens states that the SCLD69300NGT meets UL 489 requirements for molded case circuit breakers.
• IEC 60947-2: Siemens identifies the breaker as meeting IEC 60947-2 requirements for low-voltage circuit breakers.
• RoHS Directive: Siemens reports compliance with applicable substance restrictions since March 30, 2009.
• REACH Article 33: Manufacturer documentation references the duty to inform concerning substances on the applicable REACH candidate list.
• WEEE Directive (2012/19/EU): Siemens identifies the take-back obligation as No.

Where It Works Best

• Compatible Commercial Electrical Distribution Systems
  
• Industrial Power Distribution Equipment
  
• Existing Siemens LD-Frame Breaker Installations
  
• Three-Phase Electrical Distribution Systems
  
• 300-Amp Feeder Circuit Protection
  
• Compatible 480V AC Electrical Systems
  
• Compatible 600V AC Electrical Systems
  
• Equipment Requiring LSIG Electronic Trip Protection
  
• Electrical Systems Requiring Ground-Fault Trip Functionality
  
• Commercial Facility Electrical Maintenance
  
• Industrial Facility Electrical Maintenance
  
• Legacy Switchboards Approved for This Breaker Configuration