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Square D RJA36100CU43A - 1000A Molded Case Breaker 600V

Square D
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Square D RJA36100CU43A is a 1000A molded case circuit breaker designed for primary overcurrent and ground fault protection in industrial power distribution systems. This three-phase, 600V solid-state unit delivers a 65kA interrupting capacity at 480V and supports LSIG protection functions including long-time, short-time, instantaneous, and ground fault tripping. The bolt-on breaker measures 16.24 in x 16.54 in x 14.49 in (H x W x D) and weighs 52.001 lb, with a rugged construction accommodating 4 x AWG 3/0 to 600 kcmil aluminum/copper or 4 x AWG 3/0 to 500 kcmil copper wire. It complies with UL, CSA, NEMA, NMX J-266, and IEC 60947-2 standards, with additional NOM certification. Typical applications include main or feeder protection in switchboards, panelboards, and industrial control panels within manufacturing, processing, and utility environments.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Solid State
  • Voltage Rating: 600V
  • Current Rating: 1000A
  • Dimensions: 16.24 in (412.50 mm) x 16.54 in (420.12 mm) x 14.49 in (368.05 mm) (Height x Width x Depth)
  • Standards: UL, CSA, NEMA, NMX J-266, IEC 60947-2
  • Applications: Industrial power distribution, main or feeder protection
  • Switch Type: Not specified
  • Configuration: Not specified
  • Coil Voltage Maximum: Not specified
  • Temp Rating: Not specified
  • Shipping Dimensions: Not specified
  • Phase: 3
  • Voltage: 600V
  • Amperage: 1000A
  • AIC rating: 65kA@480V
  • Connection: Bolt-On
  • Poles: 3
  • Protection: Solid State
  • Functions: LSIG - Long-Time, Short-Time, Instantaneous and Ground Fault
  • Frame Size: Not specified
  • Trip Type: Not specified
  • Panel Type: Not specified
  • Breaker Type: Not specified
  • Control Voltage Minimum: Not specified
  • Control Voltage Maximum: Not specified
  • MCM Size: Not specified
  • Metal Type: Not specified
  • Panel Style: Not specified
  • Bus Type: Not specified
  • Fuse Class: Not specified
  • Insulation Temperature: Not specified
  • Inductance: Not specified
  • Impedance: Not specified
  • Barrels: Not specified
  • Class Rating: Not specified
  • Diameter: Not specified
  • Velocity: Not specified
  • Clip Center: Not specified
  • Clas: Not specified
  • Mounting: Not specified
  • Hz: Not specified
  • Coil Material: Not specified
  • Horse Power: Not specified
  • Aux Contacts: Not specified
  • CPT: Not specified
  • Full Load Amps: Not specified
  • Dist Voltage: Not specified
  • Bucket Size: Not specified
  • Bucket Style: Not specified
  • Bucket Type: Not specified
  • Full Load Amp Maximum: Not specified
  • Full Load Amp Minimum: Not specified
  • Enclosure: Not specified
  • Relay Style: Not specified
  • Coil Voltage Minimum: Not specified
  • Wire: Not specified
  • Amperage Maximum: Not specified
  • Amperage Minimum: Not specified
  • Nema Rating: Not specified
  • Switch Style: Not specified
  • Wire Size: 4 x AWG 3/0 to 600 kcmil aluminium/copper; 4 x AWG 3/0 to 500 kcmil copper
  • Certification: UL, CSA, NOM
  • Circuit Breaker Mounting Style: Not specified
  • Terminal Connection: Not specified
  • Frequency Rating: Not specified
  • Phase Connection: Not specified
  • Standards: UL, CSA, NEMA, NMX J-266, IEC 60947-2
  • Compatible Frames: Not specified
  • Installation Type: Not specified
  • Item QTY: Not specified
  • Nema Starter Size: Not specified
  • Breaker Frame: Not specified
  • Current Rating: 1000A
  • Reverse Standoff Voltage: Not specified
  • Watts: Not specified
  • Peak Pulse Current: Not specified
  • Breakdown Voltage (MIN VBR@IT ) (V): Not specified
  • Breakdown Voltage (VBR@IT) (V): Not specified
  • Polarity: Not specified
  • Operating Temperature Maximum Celsius: Not specified
  • Max Clamp Voltage: Not specified
  • On-State Current: Not specified


Product Identification
  • UPC: Not specified
  • GTIN: Not specified