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Square D Q1B270 - Molded Case Circuit Breaker 70A 2-Pole 240V

Square D
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Square D Q1B270 is a 2-pole, 70 amp molded case circuit breaker from the Q1B Series, designed to provide overcurrent protection via a thermal-magnetic trip mechanism with LI (Long-Time and Instantaneous) functions. It operates at a voltage rating of 240V and a current rating of 70A, with an interrupting capacity of 10kA at 240V for single-phase applications. The unit features a bolt-on connection, weighs 2 lb, and is constructed for durability in electrical panels. It complies with UL listing and HACR rating standards, ensuring reliable performance in industrial and commercial environments. This breaker is suitable for use in load centers requiring dependable protection against overloads and short circuits.

Key Features & Specifications
  • Type: Q1B
  • Manufacturer: Square D
  • Item Subcategory: Molded Case
  • Family: Q1B Series
  • Weight: 2 lb
  • Functions: LI - Long-Time and Instantaneous
  • Voltage Rating: 240V
  • Poles: 2
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC rating: 10kA@240V
  • Phase: 1
  • Current Rating: 70A
  • Amperage: 70 A
  • Voltage: 120/240 V AC
  • Mounting Type: Bolt-On
  • Interrupt Rating: 10 kA
  • Series/Frame: Q1
  • Wire Size: 8-2 AWG (copper or aluminum)
  • UL Listed
  • HACR Rated
  • Thermal-Magnetic Trip Unit


Part Number: Q1B270