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Square D BGA34020Y - Molded Case Circuit Breaker 20A 480V

Square D
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The Square D BGA34020Y is a 3-pole molded case circuit breaker from the Powerpact family, designed to provide thermal-magnetic protection for electrical distribution equipment and industrial control panels. It is rated for 20A at 480V AC with an 18kA interrupting capacity, operating on a 3-phase ABC phase connection. This standard breaker features an I-Line style plug-in connection with aluminum mechanical lugs on the OFF end and I-Line connection on the ON end, accommodating wire sizes from 14 AWG to 2/0 AWG aluminum or copper, and measures 5.4 in x 3.2 in x 3.5 in (137 mm x 81 mm x 89 mm) with a weight of 3.79 lb. It complies with UL 489, CSA C22.2 No 5, NEMA AB1, EN/IEC 60947-2, and other international standards, with certifications including UL, IEC, CCC, EAC, CSA, and NOM, and operates within a temperature range of -13°F to 158°F (-25°C to 70°C). Typical applications include industrial control panels and electrical distribution systems requiring reliable overcurrent protection with long-time and instantaneous trip functions.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic, Standard
  • Voltage Rating: 480V AC
  • Current Rating: 20A
  • Dimensions: 5.4 in (137 mm) x 3.2 in (81 mm) x 3.5 in (89 mm) (Height x Width x Depth)
  • Standards: UL 489, NMX J-266, NEMA AB1, GB 14048.2, EN/IEC 60947-5-1, EN/IEC 60947-2, CSA C22.2 No 5
  • Applications: Electrical Distribution Equipment, Industrial Control Panels
  • Switch Type: Standard Breaker
  • Configuration: 3-Pole, 3-Phase
  • Coil Voltage Maximum: Not applicable
  • Temp Rating: -13–158 °F (-25–70 °C)
  • Shipping Dimensions: Not specified
  • Phase: 3
  • Voltage: 480V
  • Amperage: 20A
  • AIC rating: 18kA@480V
  • Connection: I-Line Style Plug-In
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: Long Time and Instantaneous
  • Frame Size: 125A/BG
  • Trip Type: Thermal Magnetic
  • Panel Type: Electrical Distribution Equipment, Industrial Control Panels
  • Breaker Type: Standard
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Min. Wire Size 14 AWG, Max. Wire Size 2 AWG
  • Metal Type: Not specified
  • Panel Style: Not specified
  • Bus Type: Not specified
  • 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: I-Line Style Plug-In
  • Hz: Not specified
  • Coil Material: Not applicable
  • Horse Power: Not specified
  • Aux Contacts: Not specified
  • CPT: Not specified
  • Full Load Amps: Not specified
  • Dist Voltage: Not specified
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: Not specified
  • Full Load Amp Minimum: Not specified
  • Enclosure: Not specified
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Not specified
  • Amperage Maximum: 20A
  • Amperage Minimum: Not specified
  • Nema Rating: Not specified
  • Switch Style: Standard
  • Wire Size: AWG 14...AWG 2/0 aluminium/copper
  • Certification: UL, IEC, CCC, EAC, CSA, NOM
  • Circuit Breaker Mounting Style: I-Line Style Plug-In
  • Terminal Connection: Al Mechanical Lug OFF End, I-Line ON End
  • Frequency Rating: Not specified
  • Phase Connection: ABC
  • Standards: UL 489, NMX J-266, NEMA AB1, GB 14048.2, EN/IEC 60947-5-1, EN/IEC 60947-2, CSA C22.2 No 5
  • Compatible Frames: 125A/BG
  • Installation Type: Plug-In
  • Item QTY: Not specified
  • Nema Starter Size: Not applicable
  • Breaker Frame: 125A/BG
  • Current Rating: 20A
  • 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: 60648977925
  • GTIN: 03606489779252