Square D QDL22125 - 125A, 240VAC, 2-Pole, Circuit Breaker

Meet the Square D QDL22125 — a purpose-built 125A, 240VAC, two-pole circuit breaker engineered for rugged industrial, commercial, and OEM environments. This device delivers dependable overcurrent protection where it matters most, safeguarding distribution panels, motor control centers, and essential control panels against electrical faults.

Key specifications

• Current rating: 125 A
• Voltage rating: up to 240 VAC
• Poles: 2-Pole
• Type: Circuit Breaker
• Applications: panelboards, switchboards, control panels; ideal for industrial, commercial, and OEM installations

Why this 2-pole breaker is a smart choice

The two-pole design ensures both hot conductors interrupt simultaneously, providing enhanced safety and simpler wiring in 240VAC circuits. Built to stand up to demanding environments, it fits seamlessly into Square D panel architectures and complements the broader QDL family for a consistent, reliable protection strategy.

Ideal use cases

• Main or feeder protection in distribution panels and motor control centers
• Control panels in manufacturing lines, HVAC systems, and processing equipment
• OEM equipment enclosures requiring dependable overcurrent protection at 125A

What problems it solves

When electrical faults occur, this breaker provides prompt, reliable interruption to prevent damage to wiring, devices, and downstream components. Its 125A rating aligns with common industrial loads, offering a balanced solution between protection and accommodating startup currents in mid-to-large panel assemblies.

How it compares to alternatives

Compared with smaller or single-pole options, the 2-pole 125A configuration delivers coordinated protection for all conductors in a 240VAC circuit, reducing panel complexity and improving fault response in distribution and motor control setups. Its compatibility with Square D ecosystems helps maintain consistent replacement parts and service practices across your panels and MCCs.

Practical tips for use

• Verify compatibility with your panelboard or MCC chassis and ensure correct mounting orientation per the installation manual.
• Pair this breaker with other Square D protective devices to maintain a coherent protection scheme across your distribution system.
• Follow all applicable electrical codes and safety procedures during installation and maintenance.