The Schneider Electric Square D 1279957221, identified by model NJHF36600E20AFSPMAL3, is a circuit breaker designed for robust electrical system protection. This unit belongs to the highly regarded Square D product line, known for its engineering integrity and long service life in demanding industrial environments. It provides essential overcurrent and short-circuit protection, critical for maintaining operational continuity and safeguarding sensitive equipment.

Technical Details

• Series: Square D NJHF
• Frame Size: 600A
• Voltage Rating: 600VAC (derived from common NJHF series configurations; verify with datasheet for exact rating)
• Number of Poles: 3 (derived from common NJHF series configurations; verify with datasheet for exact rating)
• Interrupting Rating: 35kAIC @ 480V (derived from common NJHF series configurations; verify with datasheet for exact rating)
• Trip Unit Type: Electronic (derived from 'E' in part number; verify with datasheet for exact type and settings)
• Terminal Type: Lugs (derived from 'L' in part number; verify with datasheet for exact type)
• Mounting Type: Fixed (derived from common NJHF series configurations; verify with datasheet for exact mounting)

Applications & Compatibility

This Schneider Electric Square D circuit breaker is commonly deployed in heavy industrial settings, including manufacturing plants, power distribution systems, and large machinery control panels. It is suitable for applications requiring reliable protection for circuits up to 600 amps, such as main feeders, branch circuits, and motor control centers in sectors like automotive manufacturing, food processing, and material handling.

Available from Industrial Automation Co as new, refurbished, or surplus stock, backed by a 2-year warranty with same-day shipping on in-stock items. Request a quote for the Schneider Electric Square D 1279957221 or contact our technical team for cross-reference assistance with compatible Square D NJHF series components.