SCLD69300G - 300Amp Circuit Breaker

SCLD69300G - 300Amp Circuit Breaker

The Siemens SCLD69300G circuit breaker is a 300-amp, 3-pole molded-case circuit breaker (MCCB) for your compatible commercial and industrial electrical distribution systems. As part of the Siemens SENTRON family, this LD-frame circuit breaker features an electronic SensiTrip trip unit with long-time, instantaneous, and ground-fault protection. For electricians, maintenance teams, and facility managers working with existing electrical equipment, the SCLD69300G offers a specific combination of electrical ratings, protection functions, and physical dimensions that can help maintain the original system configuration.

Key Features and Benefits

• 300-Amp Current Rating: Designed for electrical applications requiring a 300A molded case circuit breaker.
• Three-Pole Configuration: Supports compatible three-phase power distribution systems.
• 600V AC Voltage Rating: Intended for electrical systems operating within the manufacturer's specified voltage rating.
• LD-Frame Construction: Supports identification of the correct breaker frame for compatible electrical assemblies.
• Electronic SensiTrip Unit: Incorporates electronic overcurrent protection with LIG trip functions.
• Long-Time Protection: Addresses sustained overcurrent conditions according to the trip unit's characteristics.
• Instantaneous Protection: Responds to short-circuit conditions through the instantaneous trip function.
• Ground-Fault Protection: Adds a ground-fault trip function for systems designed around LIG protection.
• Current-Limiting Design: Features Siemens' specified current-limiting breaking-capacity construction.
• TA2J6500 Line and Load Lugs: Includes designated conductor connections on both sides of the breaker.
• Copper and Aluminum Conductor Compatibility: Accommodates the specified conductor-size ranges for each material.

Technical Specifications

• Manufacturer: Siemens
  
• Product Family: SENTRON
  
• Catalog Number: SCLD69300G
  
• Manufacturer Part Number (MFN): SCLD69300G
  
• 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: LIG
  
• Long-Time Protection: Yes
  
• Instantaneous Protection: Yes
  
• Ground-Fault Protection: Yes
  
• Short-Time Protection: Not included in the specified LIG configuration
  
• 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: 783643217577
  
• Catalog ID: LV10.1
  
• Siemens Product Group: 3741
  
• Group Code: P360
  
• Commodity Code: 8536200020
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

The Siemens SCLD69300G molded case circuit breaker has manufacturer-documented electrical standards and material-compliance information relevant to its intended use in low-voltage electrical distribution equipment.

• UL 489: Siemens states that the SCLD69300G 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 regarding substances included on the applicable REACH candidate list.
• WEEE Directive (2012/19/EU): Siemens identifies a take-back obligation classification of 5.

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 LIG Electronic Trip Protection
  
• Electrical Assemblies Requiring Ground-Fault Trip Functionality
  
• Commercial Facility Electrical Maintenance
  
• Industrial Facility Electrical Maintenance
  
• Legacy Switchboards Approved for This Breaker Configuration