Square D EJB34040SA - Molded Case Circuit Breaker 40A 480V (3-Pole)
Square D EJB34040SA - Molded Case Circuit Breaker 40A 480V (3-Pole)

Square D EJB34040SA - Molded Case Circuit Breaker 40A 480V (3-Pole)

Square D
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Square D EJB34040SA is a 3-pole molded case circuit breaker from the EJB Series, designed for thermal-magnetic protection against overloads and short circuits in industrial power distribution systems. It is rated for 40A continuous current at 480V AC with a 65kA interrupting capacity, supporting 3-phase applications, and features long-time and instantaneous trip functions. The breaker measures 5.66 in (143.76 mm) x 3.92 in (99.57 mm) x 4.05 in (102.87 mm) (H x W x D), weighs 4.34 lb, and accepts wire sizes from AWG 12 to AWG 2/0 for copper and AWG 12 to AWG 2/0 for aluminum. It operates within a temperature range of -13°F to 158°F (-25°C to 70°C) and is manufactured by Schneider Electric in Mexico. This breaker is suitable for industrial panelboards and switchboards requiring reliable overcurrent protection in harsh environments.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic
  • Voltage Rating: 480V AC
  • Current Rating: 40A
  • Dimensions: 5.66 in (143.76 mm) x 3.92 in (99.57 mm) x 4.05 in (102.87 mm) (Height x Width x Depth)
  • Standards: UL, CSA
  • Applications: Industrial power distribution, panelboards, switchboards
  • Switch Type: Circuit Breaker
  • Configuration: 3-Pole
  • Coil Voltage Maximum: Not applicable
  • Temp Rating: -13°F to 158°F (-25°C to 70°C)
  • Shipping Dimensions: Not specified
  • Phase: 3
  • Voltage: 480V
  • Amperage: 40A
  • AIC rating: 65kA@480V
  • Connection: Line and Load
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: Long-Time and Instantaneous Trip
  • Frame Size: EJB
  • Trip Type: Thermal Magnetic
  • Panel Type: Not specified
  • Breaker Type: Molded Case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not applicable
  • 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: Panel Mount
  • Hz: 50/60 Hz
  • 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: Copper/Aluminum
  • Amperage Maximum: 40A
  • Amperage Minimum: Not specified
  • Nema Rating: Not specified
  • Switch Style: Not applicable
  • Wire Size: AWG 12 to AWG 2/0 (Copper), AWG 12 to AWG 2/0 (Aluminum)
  • Certification: UL, CSA
  • Circuit Breaker Mounting Style: Panel Mount
  • Terminal Connection: Lug
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-Phase
  • Standards: UL 489, CSA C22.2 No. 5
  • Compatible Frames: EJB
  • Installation Type: Fixed
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: EJB
  • Current Rating: 40A
  • 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: 785901777021
  • GTIN: 00785901777021