Square D Q4L3250 - 250 A, 240 V, 3-Pole Circuit Breaker | AmpState

Meet the Square D Q4L3250 — a 250A, 240V, 3-pole molded case circuit breaker engineered for dependable branch circuit protection in panelboards and loadcenters. Its compact form and precise thermal-magnetic trip unit deliver stable, repeatable protection against overcurrent and short circuits, making it a reliable backbone for demanding electrical installations.

Key specifications

• Amperage rating: 250A
• Voltage rating: 240V
• Poles: 3
• Type: Thermal-magnetic molded case circuit breaker
• Part number: Q4L3250

Why this design stands out

• Compact molded case design maximizes panel space, enabling efficient layouts in both new installations and upgrades.
• Thermal-magnetic trip unit provides stable, repeatable protection characteristics, delivering dependable response to overcurrent and short-circuit events.
• Three-pole architecture ensures simultaneous tripping across all poles, which improves safety and coordination for balanced three-phase circuits.
• OEM-compatible compatibility is built to work with matching Square D panelboards and loadcenters, simplifying installation and ensuring consistent performance with your existing gear.
• Versatile applications suitable for residential, commercial, and light industrial environments, covering a broad range of protection needs.

Practical applications and scenarios

Use the Q4L3250 to protect large feeders and critical circuits in commercial distribution panels, guard heavy loads in light industrial setups, or serve as a robust main or feeder breaker in compatible panelboards. Its 250A capacity makes it suitable for high-demand circuits, while the 240V rating aligns with common low-voltage, single- or three-phase infrastructure. By providing coordinated protection across three phases, this breaker helps minimize equipment wear, reduce downtime, and simplify maintenance in busy electrical environments.

Ideal for

Electrical professionals upgrading or stocking panelboards and loadcenters who need a reliable, high-capacity 3-pole solution from a trusted brand. The Square D Q4L3250 is a practical choice for projects where space is at a premium, protection needs are demanding, and compatibility with existing Square D gear is a priority.

In short, the Q4L3250 delivers strong, space-efficient protection for large residential feeders, commercial panels, and light industrial systems, backed by a thermal-magnetic trip that keeps circuits safe and service continuity intact.