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Square D QOB240VH - 40A 2-Pole Bolt-On Circuit Breaker

Square D
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The Square D QOB240VH is a molded case circuit breaker designed to provide reliable overcurrent protection for industrial and commercial electrical systems. It features a 40A current rating and a 120/240VAC voltage rating, housed in a compact bolt-on unit measuring 79 mm x 38 mm x 74 mm (H x W x D) and weighing 0.74 lb. This thermal magnetic breaker offers both long-time and instantaneous trip (LI) functions, is constructed with a 100A/QO frame, and provides a high interrupting capacity of 22kA at 240V. It complies with CSA and UL standards and is engineered for a wide operating temperature range of -25°C to 70°C, making it suitable for installation in Square D NQOD panelboards using copper or aluminum wire from AWG 2 to AWG 8.

Key Features & Specifications
  • Type: Molded Case, Thermal Magnetic Protection, High Interrupting Capacity, Bolt-On Connection
  • Voltage Rating: 120/240VAC
  • Current Rating: 40A
  • Dimensions: 3.1 in (79 mm) H x 1.5 in (38 mm) W x 2.9 in (74 mm) D
  • Standards: CSA, UL Listed
  • Applications: Industrial and Commercial Electrical Distribution
  • Switch Type: Circuit Breaker
  • Configuration: Bolt-On
  • Temp Rating: -25°C to 70°C
  • Phase: 1
  • AIC rating: 22kA@240V
  • Connection: Bolt-On
  • Poles: 2
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous Trip
  • Frame Size: 100A/QO
  • Panel Type: Square D NQOD Panelboards
  • Breaker Type: High Interrupting Capacity
  • Wire Size: AWG 8 to AWG 2, Copper or Aluminum
  • Certification: UL Listed
  • Terminal Connection: Pressure Plate
  • MCM Size: Min. Wire Size 8 AWG Max. Wire Size 2 AWG
  • Weight: 0.74 lb


Product Identification
  • UPC: 785901054764
  • GTIN: 00785901054764