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Square D HDA261251 - Molded Case Circuit Breaker 125A 600V 2-Pole

Square D
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Square D HDA261251 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in industrial power distribution systems. It features a 125A current rating and a 600V AC voltage rating, housed within a compact H-frame measuring 163 mm H x 104 mm W x 86 mm D and weighing 3.001 lb. The breaker utilizes a thermal-magnetic trip unit for long-time and instantaneous (LI) protection, is configured as a 2-pole, single-phase device with an I-Line style plug-in connection and lug terminals, and offers an interrupting capacity of 18kA at 480V. It is engineered for compliance with UL, CSA, NEMA, NOM, and IEC 60947-2 standards and is suitable for a wide range of applications within an operating temperature range of -2 to 70 °C, accepting conductor sizes from 14 AWG to 3/0 AWG for both copper and aluminum.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, I-Line Plug-In
  • Voltage Rating: 600V AC
  • Current Rating: 125A
  • Dimensions: 163 mm H x 104 mm W x 86 mm D (6.4 in x 4.09 in x 3.4 in)
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Applications: Industrial Power Distribution
  • Switch Type: Circuit Breaker
  • Configuration: 2-Pole
  • Temp Rating: -2 to 70 °C (28 to 158 °F)
  • Phase: 1
  • AIC Rating: 18kA @ 480V
  • Connection: I-Line Style Plug-In, Lug Terminal
  • Poles: 2
  • Protection: Thermal Magnetic
  • Functions: Long-Time and Instantaneous (LI)
  • Frame Size: H
  • Wire Size: 14 AWG to 3/0 AWG (Cu/Al)
  • Certification: UL, CSA, NOM
  • Phase Connection: AB
  • Terminal Connection: I-Line, Lug
  • MCM Size: Min. 14 AWG, Max. 3/0 AWG (Cu/Al)
  • Weight: 3.001 lb


Product Identification
  • UPC: 785901419068
  • GTIN: 00785901419068