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Square D NEF36600LSG - Molded Case 600A LSIG Breaker

Square D
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Square D NEF36600LSG is a 3-pole, 600A molded case circuit breaker from the Micrologic family, engineered for solid-state LSIG protection (Long-Time, Short-Time, Instantaneous, and Ground Fault) in power distribution systems. It operates at a voltage rating of 600V and delivers an interrupting capacity of 100kA at 480V, ensuring robust fault interruption for three-phase applications. The unit features a bolt-on connection within an NE frame size, weighing 82 lb, and is constructed for durable industrial environments. It is UL Listed and CSA Certified, meeting stringent safety and performance standards for commercial and industrial installations. This breaker is typically deployed in main switchboards, distribution panels, and heavy machinery circuits requiring precise, adjustable protection coordination.

Key Features & Specifications
  • Manufacturer: Square D
  • Model: NEF36600LSG
  • Type: NEL
  • Item Subcategory: Molded Case
  • Family: Micrologic
  • Amperage: 600A
  • Voltage: 600V
  • Poles: 3
  • Phase: 3
  • Protection Type: LSIG (Long-Time, Short-Time, Instantaneous, Ground Fault)
  • Frame Size: NE Frame
  • Connection: Bolt-On
  • Protection: Solid State
  • AIC Rating: 100kA@480V
  • Weight: 82 lb
  • Mounting Type: Molded Case
  • Standards: UL Listed, CSA Certified
  • Application: Commercial, Industrial
  • Features: Ground Fault Protection, Trip Indication


Part Number: NEF36600LSG