Q221150AC - 150 Amp Circuit Breaker

Q221150AC - 150 Amp Circuit Breaker

The Q221150AC 150 Amp Circuit Breaker offers dependable, high-performance protection for demanding power distribution systems. Engineered with a thermal-magnetic trip mechanism, this molded-case breaker delivers accurate response to both overloads and short circuits—so your facility stays safe and up and running. Its I-Line plug-on mounting streamlines installation, while the tough enclosure resists wear, moisture, and mechanical stresses. Whether you’re outfitting a factory, warehouse, data center, or large commercial building, the Q221150AC is built to deliver the performance and peace of mind your electrical system needs.

Key Features and Benefits

• Thermal-Magnetic Trip Technology: Precisely handles overloads (thermal) and short circuits (magnetic) in one device, protecting wiring and equipment.
• Molded-case Housing: Resists dust, moisture, vibration and external impact for long operational life.
• Plug-On I-Line Mounting: Snap-in design makes installation fast and tool-friendly, minimizing labor and downtime.
• High Interrupting Capacity: Rated for 10,000 AIC at 120/240 VAC, giving you headroom for fault conditions.
• Two-Pole Protection: Covers both legs in split-phase systems for balanced circuit management.

Technical Specifications

• Dimensions:
  • Width: 3.00 inches
  • Length: 7.88 inches
  • Depth: 4.31 inches
• Weight: Approximately 6.50 lb
• Poles: 2
• Interrupting Rating (AIC): 10,000 at 120/240 VAC
• Frame Type: Q2
• Phasing: A-C
• Mounting Style: Plug-On, I-Line
• Breaker Type: Thermal-Magnetic, Molded Case

Material Compliance and Certifications

• Industry Standards: This circuit breaker uses materials selected for consistency with industry safety, quality, and environmental standards.
• Compliance: It is manufactured in compliance with UL and ANSI norms governing molded-case circuit breakers, so you can be confident it meets recognized benchmarks for electrical safety and system reliability.

Where It Works Best

• The Q221150AC is ideally suited for industrial or commercial power distribution systems. You’ll often find it in manufacturing plants, warehouses, office buildings, retail centers, data centers, and other environments with high electrical demand. Use it wherever you need reliable protection against overcurrent or short circuits in a two-pole, 120/240 V setup. It’s especially helpful in systems where ease of installation and durability matter—such as retrofit projects, expansion panels, and new builds.