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Square D HJA36050SA - Molded Case 50A 600V 3-Pole Breaker

Square D
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Square D HJA36050SA is a molded case circuit breaker designed for overcurrent protection in industrial power distribution systems. This three-pole, 50A unit is rated for 600V AC and provides LI (Long-Time and Instantaneous) protection functions through a thermal magnetic trip mechanism. The breaker features an I-Line style plug-in connection, measures 6.42 inches in height by 3.09 inches in depth by 4.44 inches in width, weighs 5 lb, and accepts wire sizes from AWG 14 to AWG 3/0 aluminum/copper. It is rated for 65kA interrupting capacity at 480V, operates within a temperature range of 28 to 158 °F (-2 to 70 °C), and includes a 120V shunt trip for remote tripping capability. This unit is suitable for use in three-phase industrial applications requiring reliable circuit protection.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker
  • Voltage Rating: 600V AC
  • Current Rating: 50A
  • Dimensions: Height 6.42 in (163 mm) x Depth 3.09 in (78.49 mm) x Width 4.44 in (112.78 mm)
  • Standards: UL Listed, CSA Certified
  • Applications: Industrial power distribution, motor control centers, panelboards
  • Switch Type: Thermal Magnetic
  • Configuration: 3-Pole
  • Coil Voltage Maximum: 120V AC (shunt trip)
  • Temp Rating: 28-158 °F (-2-70 °C)
  • Shipping Dimensions: 6.42 x 4.44 x 3.09 in
  • Phase: 3
  • Amperage: 50A
  • 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
  • Breaker Type: Molded Case
  • Control Voltage Minimum: 120V AC
  • Control Voltage Maximum: 120V AC
  • MCM Size: Not applicable
  • Metal Type: Not specified
  • Panel Style: I-Line
  • Bus Type: I-Line
  • Fuse Class: Not applicable
  • Insulation Temperature: Not specified
  • Inductance: Not applicable
  • Impedance: Not applicable
  • Barrels: Not applicable
  • Class Rating: Not applicable
  • Diameter: Not applicable
  • Velocity: Not applicable
  • Clip Center: Not applicable
  • Clas: Not applicable
  • Mounting: Plug-In
  • Hz: 50/60 Hz
  • Coil Material: Copper
  • Horse Power: Not specified
  • Aux Contacts: Not included
  • CPT: Not included
  • Full Load Amps: Not applicable
  • Dist Voltage: Not applicable
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: Not applicable
  • Full Load Amp Minimum: Not applicable
  • Enclosure: Open
  • Relay Style: Not applicable
  • Coil Voltage Minimum: 120V AC
  • Wire: AWG 14...AWG 3/0
  • Amperage Maximum: 50A
  • Amperage Minimum: Not applicable
  • Nema Rating: Not specified
  • Switch Style: Not applicable
  • Wire Size: AWG 14...AWG 3/0
  • Certification: UL, CSA
  • Circuit Breaker Mounting Style: Plug-In
  • Terminal Connection: I-Line
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-Phase
  • Standards: UL 489, CSA C22.2 No. 5
  • Compatible Frames: HJA
  • Installation Type: Plug-In
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: HJA
  • Current Rating: 50A
  • Reverse Standoff Voltage: Not applicable
  • Watts: Not applicable
  • 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: 70 °C
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: 785901891084
  • GTIN: 00785901891084