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The FA36050 Square D 3-Pole 50A 600V I-Line Circuit Breaker is designed for robust protection in industrial and commercial applications. Its reliable construction ensures safe operation, while the I-Line design provides easy installation within panel boards. Ideal for medium voltage applications, this breaker is a solid choice for your electrical needs.
The FA36050 uses Square D's I-Line plug-in mounting system, so it is compatible with Square D I-Line panelboards and switchboards rated for FA-frame breakers. It is not interchangeable with QO or Homeline residential loadcentres. Contact us with your panelboard model number and we'll confirm compatibility.
The Square D FA-frame I-Line series has been in production for many years and replacement units are still obtainable, though availability can vary by configuration. Northern Breaker Group specialises in sourcing hard-to-find and obsolete breakers — reach out for a quote and we'll confirm current stock or sourcing options for the FA36050.
The FA36050 is rated at 600V AC, which means it is suitable for use on any system voltage at or below that rating — including 208V, 240V, 347V, and 480V 3-phase systems. Always verify that the breaker's 14kA interrupting rating meets or exceeds the available fault current at the point of installation.
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