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Square D PTMA36300GN - 300A 3-Phase Bus Plug (600V, 65kA)

Square D
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Square D PTMA36300GN is a 300A, 3-phase, 600V circuit breaker type bus plug from the I-Line family, designed for primary overcurrent protection in industrial power distribution systems. It features a 65kA interrupting capacity at 480V and accommodates 4 AWG wire connections, with a robust construction weighing 225 lb. The unit integrates a molded case switch with a 600VAC maximum coil voltage and operates within a temperature rating suitable for standard industrial environments. It complies with NEMA and UL standards for safety and reliability, ensuring consistent performance in demanding applications. This bus plug is commonly used in manufacturing plants, data centers, and commercial facilities for branch circuit protection and load switching.

Key Features & Specifications
  • Type: Circuit breaker type bus plug, molded case switch, I-Line family
  • Voltage Rating: 600V AC
  • Current Rating: 300A
  • AIC Rating: 65kA@480V
  • Phase: 3
  • Wire: 4 AWG
  • Weight: 225 lb
  • Standards: NEMA, UL
  • Applications: Industrial power distribution, branch circuit protection
  • Switch Type: Molded case
  • Configuration: 3-pole
  • Coil Voltage Maximum: 600V AC
  • Temp Rating: Standard industrial
  • Shipping Dimensions: Varies by packaging
  • Connection: Wire
  • Poles: 3
  • Protection: Overcurrent
  • Functions: Circuit protection and switching
  • Frame Size: I-Line
  • Trip Type: Thermal-magnetic
  • Panel Type: I-Line
  • Breaker Type: Molded case
  • Control Voltage Minimum: Not specified
  • Control Voltage Maximum: 600V AC
  • MCM Size: Not applicable
  • Metal Type: Steel enclosure
  • Panel Style: I-Line
  • Bus Type: I-Line
  • Fuse Class: Not applicable
  • Insulation Temperature: Standard
  • Inductance: Not specified
  • Impedance: Not specified
  • Barrels: Not applicable
  • Class Rating: Not applicable
  • Diameter: Not applicable
  • Velocity: Not applicable
  • Clip Center: Not applicable
  • Clas: Not applicable
  • Mounting: Panel
  • Hz: 50/60
  • Coil Material: Copper
  • Horse Power: Not specified
  • Aux Contacts: Not specified
  • CPT: Not specified
  • Full Load Amps: 300A
  • Dist Voltage: 600V
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 300A
  • Full Load Amp Minimum: Not specified
  • Enclosure: NEMA 1
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not specified
  • Wire: 4 AWG
  • Amperage Maximum: 300A
  • Amperage Minimum: Not specified
  • Nema Rating: NEMA 1
  • Switch Style: Molded case
  • Wire Size: 4 AWG
  • Certification: UL, NEMA
  • Circuit Breaker Mounting Style: Panel
  • Terminal Connection: Wire
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-phase
  • Standards: UL, NEMA
  • Compatible Frames: I-Line
  • Installation Type: Panel
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: I-Line
  • Current Rating: 300A
  • Reverse Standoff Voltage: Not applicable
  • Watts: Not specified
  • Peak Pulse Current: Not applicable
  • Breakdown Voltage (MIN VBR@IT ) (V): Not applicable
  • Breakdown Voltage (VBR@IT) (V): Not applicable
  • Polarity: Not applicable
  • Operating Temperature Maximum Celsius: Not specified
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: Not available
  • GTIN: Not available