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Square D HJA36020AABCSD - Molded Case Breaker 20A 600V 3-Pole

Square D
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Square D HJA36020AABCSD is a 3-pole molded case circuit breaker designed for thermal-magnetic overcurrent protection in industrial power distribution systems. It is rated for 600V AC, 20A continuous current, and provides LI (Long-Time and Instantaneous) trip functions with a 65kA interrupting capacity at 480V. The unit weighs 5.19 lb and features an I-Line style plug-in connection for secure panel mounting in Square D switchboards and panelboards. It complies with UL 489 and NEMA AB-1 standards for molded case circuit breakers. This breaker is commonly used in commercial and industrial applications requiring reliable branch circuit protection for motors, transformers, and lighting loads.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic
  • Voltage Rating: 600V AC
  • Current Rating: 20A
  • Dimensions: Standard molded case size
  • Standards: UL 489, NEMA AB-1
  • Applications: Industrial power distribution, motor protection, branch circuit protection
  • Switch Type: I-Line Style Plug-In
  • Configuration: 3-Pole
  • Coil Voltage Maximum: Not applicable (thermal magnetic)
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: Standard packaging
  • Phase: 3
  • Voltage: 600V AC
  • Amperage: 20A
  • AIC rating: 65kA@480V
  • Connection: I-Line Style Plug-In
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: HJA
  • Trip Type: Thermal Magnetic
  • Panel Type: I-Line panelboards
  • Breaker Type: Molded Case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not applicable
  • Metal Type: Molded case
  • Panel Style: I-Line
  • Bus Type: I-Line
  • Fuse Class: Not applicable
  • Insulation Temperature: 105°C
  • Inductance: Not specified
  • Impedance: Not specified
  • Barrels: Not applicable
  • Class Rating: Not applicable
  • Diameter: Not applicable
  • Velocity: Not applicable
  • Clip Center: Standard I-Line
  • Clas: Not applicable
  • Mounting: I-Line Plug-In
  • Hz: 50/60 Hz
  • Coil Material: Not applicable
  • Horse Power: Not specified
  • Aux Contacts: Not included
  • CPT: Not included
  • Full Load Amps: 20A
  • Dist Voltage: 600V
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 20A
  • Full Load Amp Minimum: 20A
  • Enclosure: Open style
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Not applicable
  • Amperage Maximum: 20A
  • Amperage Minimum: 20A
  • Nema Rating: NEMA AB-1
  • Switch Style: I-Line
  • Wire Size: Not specified
  • Certification: UL 489
  • Circuit Breaker Mounting Style: I-Line Plug-In
  • Terminal Connection: I-Line
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-Phase
  • Standards: UL 489, NEMA AB-1
  • Compatible Frames: Square D I-Line
  • Installation Type: Plug-In
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: HJA
  • Current Rating: 20A
  • 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: 40°C
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


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