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Square D EGB34040SA - Molded Case Circuit Breaker 40A 480V 3P

Square D
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Square D EGB34040SA is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in industrial power distribution systems. It features a 40A current rating and a 480V voltage rating, housed within a compact G-frame/E-frame design measuring 143.76 mm H x 99.57 mm W x 102.87 mm D and weighing 4.12 lb. The breaker is cULus certified and operates on a 3-phase system, offering thermal-magnetic protection with long-time and instantaneous trip functions, including a 120V shunt trip. Its bolt-on lug connection accommodates wire sizes from AWG 12 to 2/0 for aluminum and AWG 14 to 2/0 for copper, making it suitable for NF panelboards in commercial and industrial facilities.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection with Long-Time and Instantaneous Trip
  • Voltage Rating: 480V AC
  • Current Rating: 40A
  • Dimensions: 143.76 mm H x 99.57 mm W x 102.87 mm D (5.66 in x 3.92 in x 4.05 in)
  • Standards: cULus
  • Applications: Industrial Power Distribution, NF Panelboards
  • Switch Type: Circuit Breaker
  • Configuration: Bolt-On
  • Coil Voltage Maximum: 120V (Shunt Trip)
  • Temp Rating: -25 to 70 °C (-13 to 158 °F)
  • Shipping Dimensions: Not Specified
  • Phase: 3
  • Voltage: 480V
  • Amperage: 40A
  • AIC Rating: 35kA @ 480V
  • Connection: Bolt-On Lug
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: Long Time and Instantaneous Trip
  • Frame Size: G; E-Frame
  • Trip Type: Thermal Magnetic
  • Panel Type: NF Panelboard
  • Breaker Type: Molded Case
  • Control Voltage Minimum: Not Specified
  • Control Voltage Maximum: Not Specified
  • MCM Size: Min. 12 AWG (Al), 14 AWG (Cu); Max. 2/0 AWG (Cu/Al)
  • Metal Type: Not Specified
  • Panel Style: Not Specified
  • Bus Type: Not Specified
  • Fuse Class: Not Applicable
  • Insulation Temperature: Not Specified
  • Inductance: Not Specified
  • Impedance: Not Specified
  • Barrels: Not Applicable
  • Class Rating: Not Specified
  • Diameter: Not Applicable
  • Velocity: Not Applicable
  • Clip Center: Not Applicable
  • Class: Not Specified
  • Mounting: Bolt-On
  • Hz: 50/60 Hz (Typical for Rating)
  • 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 Applicable
  • Bucket Style: Not Applicable
  • Bucket Type: Not Applicable
  • Full Load Amp Maximum: Not Specified
  • Full Load Amp Minimum: Not Specified
  • Enclosure: Molded Case
  • Relay Style: Not Applicable
  • Coil Voltage Minimum: Not Specified
  • Wire: Copper or Aluminum
  • Amperage Maximum: 40A
  • Amperage Minimum: Not Specified
  • Nema Rating: Not Specified
  • Switch Style: Not Specified
  • Wire Size: AWG 12 to 2/0 (Al), AWG 14 to 2/0 (Cu)
  • Certification: cULus
  • Circuit Breaker Mounting Style: Bolt-On
  • Terminal Connection: Lug
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-Phase
  • Standards: cULus
  • Compatible Frames: G; E-Frame
  • Installation Type: Panel Mount
  • Item QTY: 1
  • Nema Starter Size: Not Applicable
  • Breaker Frame: G; E-Frame
  • Current Rating: 40A
  • 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: 70 °C
  • Max Clamp Voltage: Not Applicable
  • On-State Current: Not Applicable


Product Identification
  • UPC: 785901285182
  • GTIN: 00785901285182