Square D QOB240-1021 - Molded Case 40A 2-Pole Breaker (120/240VAC)
Square D QOB240-1021 - Molded Case 40A 2-Pole Breaker (120/240VAC)

Square D QOB240-1021 - Molded Case 40A 2-Pole Breaker (120/240VAC)

Square D
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Square D QOB240-1021 is a molded case circuit breaker designed for overcurrent protection in electrical distribution systems. This two-pole unit is rated for 40 Amps at 120/240 VAC and features a 10kA interrupting capacity at 120/240 VAC, with a thermal magnetic trip mechanism that includes a 120V shunt trip for remote switching. The breaker weighs 7 lb and uses a bolt-on connection with pressure plate terminals, accommodating wire sizes from #8 to #2 AWG aluminum or copper. It is UL Listed and CSA certified, meeting industry standards for safety and performance. This QOB Series breaker is suitable for use in load centers and panelboards in commercial and industrial applications.

Key Features & Specifications
  • Type: QOB
  • Amperage: 40 Amps
  • Voltage Rating: 120/240 VAC
  • Poles: 2
  • Connection: Bolt-On
  • Terminal Connection: Pressure Plate
  • Interrupt Rating: 10kA @ 120/240 VAC
  • Series/Frame: QOB Series
  • Trip Unit: Thermal Magnetic with 120V Shunt Trip
  • Wire Size: #8 to #2 AWG (Aluminum/Copper)
  • Weight: 7 lb
  • Standards: CSA, UL Listed
  • Certification: UL Listed
  • Phase: 1


Product Identification
  • UPC: 78590149432
  • GTIN: 00785901494324