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Square D Q1B3501021 - Molded Case 50A 240V 3-Pole Breaker

Square D
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Square D Q1B3501021 is a 3-pole molded case circuit breaker designed for thermal magnetic overcurrent protection in industrial power distribution systems. It is rated for 50A continuous current at 240VAC with a 10kA interrupting capacity at 240V, providing LI (Long-Time and Instantaneous) protection functions for three-phase applications. The unit features a bolt-on connection style, weighs 2 lb, and is constructed as part of the Q1B Series with a compact molded case housing. This breaker complies with applicable UL and NEMA standards for industrial electrical equipment. Typical applications include motor control centers, panelboards, and switchboards requiring reliable branch circuit protection in commercial and industrial facilities.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic, Bolt-On
  • Voltage Rating: 240V
  • Current Rating: 50A
  • Poles: 3
  • Phase: 3
  • AIC Rating: 10kA@240V
  • Connection: Bolt-On
  • Protection: Thermal Magnetic, LI (Long-Time and Instantaneous)
  • Weight: 2 lb
  • Family: Q1B Series
  • Functions: LI - Long-Time and Instantaneous
  • Item Subcategory: Molded Case


Product Identification
  • UPC: Not available
  • GTIN: Not available