Square D XO240 - 40A, 240VAC, Circuit Breaker

Square D XO240 - 40A, 240VAC Circuit Breaker is a rugged overcurrent protection device designed for the harsh realities of industrial, commercial, and OEM electrical systems. Built to safeguard distribution networks, it protects feeders and circuits inside panelboards, switchboards, control panels, and OEM equipment. As a member of the XO240 family, this breaker delivers dependable performance in demanding environments where uptime and safety matter.

Key specifications

• Current rating: 40A
• Voltage rating: 240VAC
• Breaker type: Circuit Breaker
• Applications: panelboards, switchboards, control panels, and OEM equipment

Why this matters

In distribution panels and motor control centers, protecting wiring and connected equipment from overcurrent is essential. The XO240 40A at 240VAC delivers a precise, reliable interruption when a fault occurs, helping prevent insulation damage, nuisance trips, and costly downtime. Designed for industrial and commercial use, it supports safe operation across a range of controlled environments and equipment footprints, ensuring a consistent protection strategy throughout your electrical system.

Ideal use cases

• New installations in panelboards, switchboards, and control panels that require 40A protection
• OEM equipment integrations where a standard 40A, 240VAC breaker is specified
• Industrial control panels and motor control centers needing robust overcurrent protection
• Commercial power distribution feeders that demand dependable circuit interruption

Installation and compatibility tips

For reliable performance, verify that your equipment and enclosure are compatible with XO240-series breakers and that the circuit’s load aligns with the 40A rating. Follow the manufacturer’s installation guidelines, ensure proper mounting and clearance, and replace only with an identical type and rating to maintain intended protection and coordination in your distribution system.

With its precise 40A, 240VAC specification and Square D build quality, the XO240 is a practical, purpose-built solution for safeguarding critical circuits in distribution panels and motor control centers.