Square D FA36040 - 40A, 600VAC, 3-Pole, Circuit Breaker

Square D FA36040 40A, 600VAC, 3-Pole Circuit Breaker is a rugged, industrial-grade protector engineered for demanding electrical environments. Designed to deliver reliable overcurrent protection across three phases, this unit helps keep panelboards, switchboards, and motor control centers running smoothly.

• Current rating: 40A — precise protection that matches typical motor and feeder loads without unnecessary trips.
• Voltage rating: up to 600VAC — ideal for medium-voltage distribution in manufacturing floors, processing lines, and comprehensive electrical rooms.
• Poles: 3-Pole — coordinated protection across all three phases, simplifying wiring and ensuring balanced shutdown in 3-phase systems.
• Breaker type: Circuit Breaker — fast, reliable interruption to prevent damage from overcurrent, short circuits, and arcing in critical equipment.

Ideal for industrial, commercial, and OEM applications where dependable protection and safe operation are critical. This FA36040 shines in:

• Panelboards and switchboards that house three-phase circuits and heavy equipment
• Motor control centers (MCCs) and feeders powering pumps, fans, conveyors, and compressors
• OEM enclosures and integrated control panels requiring robust, field-replaceable protection
• Facilities with 600VAC distribution networks that demand reliable trip performance

Why choose the FA36040 for your electrical protection needs — as a trusted Square D device, it delivers consistent, predictable protection across all three phases, reducing the risk of unbalanced loads and gear damage. The three-pole configuration simplifies wiring in three-phase layouts and provides a streamlined path to safe shutdown during faults.

Practical considerations to get the most from this breaker include ensuring compatibility with your panelboard or MCC backplane and following proper lockout/tagout procedures during replacement. Terminal connections should be installed and torqued according to standard electrical practices to maintain reliable contact and trip performance. With its rugged construction and proven performance, the Square D FA36040 is a dependable choice for engineers and electricians optimizing reliability in industrial power distribution.