Square D QBL22150 - 150 A, 240 V, 2-Pole Circuit Breaker | AmpState

Meet the Square D QBL22150 150A, 240V, 2-pole molded case circuit breaker—the dependable protection your panelboards and loadcenters rely on for safe, consistent operation. Designed for branch circuits, this breaker guards against overcurrent and short-circuit conditions, helping prevent damage and downtime in residential, commercial, and light industrial applications.

Key advantages at a glance

• Compact molded case design maximizes panel space and simplifies installation in tight electrical enclosures.
• Thermal-magnetic trip unit delivers stable, repeatable protection performance, reacting quickly to faults while minimizing nuisance trips.
• OEM compatibility engineered to integrate seamlessly with matching Square D OEM loadcenters and panelboards for a reliable, plug‑and‑play fit.
• Versatile across sectors suited for residential panels, commercial distribution, and light industrial applications where robust protection is essential.

Key specifications

• Manufacturer: Square D
• Part Number: QBL22150
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 150 A
• Voltage Rating: 240 V
• Number of Poles: 2
• Application: Branch circuit overcurrent and short-circuit protection in panelboards and loadcenters

Why this breaker stands out

• Reliable protection tailored for Square D panels, reducing the guesswork during upgrades or replacements.
• Solid performance under typical load conditions found in homes, small businesses, and service centers, helping to maintain continuity of power for critical circuits.
• Durable construction designed to withstand routine electrical cycling and environmental factors within standard panel installations.

Use cases and installation insights

• Replacing a failed 2-pole breaker in a Square D panelboard or loadcenter to restore circuit protection quickly.
• Upgrading circuits to handle higher loads in residential basements, garages, or home offices where 150A feeders or main feeds are required.
• Wittingly suited for commercial subpanels and light industrial distribution where dependable branch-circuit protection is paramount.

Helpful tip: Ensure you’re pairing this QBL22150 with a matching Square D loadcenter or panelboard to guarantee full compatibility and optimal performance. Always follow local electrical codes and manufacturer wiring diagrams during installation, and de-energize equipment before service.