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Square D Q4L2300 - Molded Case Circuit Breaker 300A 2-Pole

Square D
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The Square D Q4L2300 is a molded case circuit breaker designed to provide reliable overcurrent and short-circuit protection for industrial electrical systems. It features a 300A current rating and a 240V voltage rating, housed within a compact 400A frame with dimensions of 279.4 mm H x 152.4 mm W x 148.34 mm D and a weight of 14.361 lb. This thermal magnetic breaker is constructed with a bolt-on, two-pole lug connection and complies with CSA, IEC, and UL standards. It is engineered for integration into panelboards, switchboards, motor control centers, and other industrial enclosures, offering a 25kA interrupting capacity at 240V for robust system protection.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic Protection, Standard Type
  • Voltage Rating: 240V AC
  • Current Rating: 300A
  • Frame Size: 400A/Q4
  • Poles: 2
  • AIC Rating: 25kA @ 240V
  • Connection: Bolt-On, Lug Terminal
  • Protection: Long Time and Instantaneous
  • Trip Type: Thermal Magnetic
  • Phase: 1
  • Phase Connection: Not Applicable
  • Wire Size: 1/0 AWG to 250 kcmil (Aluminium/Copper), 600 kcmil (Aluminium/Copper)
  • MCM Size: Min. 1/0 AWG, Max. 250 MCM, 600 MCM
  • Dimensions: 11 in (279.4 mm) H x 6 in (152.4 mm) W x 5.84 in (148.34 mm) D
  • Weight: 14.361 lb
  • Temp Rating: Minimum 40°C (104°F), Maximum 40°C (104°F)
  • Panel Type: Busway Plug-In Units, Combination Starters, Industrial Enclosures, Motor Control Centers, Panelboards, Switchboards
  • Standards & Certification: CSA, IEC, UL Listed
  • Manufacturer: Schneider Electric
  • Family: Q4L Series
  • Country of Origin: Mexico


Product Identification
  • UPC: 785901649229
  • GTIN: 00785901649229