Siemens QJ22B150 - 150 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens QJ22B150—a 150A, 240V, 2-pole bolt-on molded case circuit breaker designed to shield your panelboards and load centers from overcurrent and short circuits. Built for dependable protection, this MCCB delivers reliable performance in a variety of electrical environments.

Secure bolt-on mounting for a rigid, vibration-resistant bus connection. The bolt-on design ensures a solid, low-resistance connection to the bus bars, minimizing loose connections and arcing that can compromise protection and system reliability.

Thermal-magnetic trip unit for stable, repeatable protection. By combining thermal overload detection with magnetic short-circuit sensing, this breaker responds quickly to fault conditions, preserving wiring, devices, and downstream equipment.

OEM-compatible for seamless panel integration. Specifically engineered to work with matching Siemens OEM load centers and panelboards, ensuring proper fit, trip characteristics, and long-term compatibility.

Versatile for residential, commercial, and light industrial use. Ideal for guarding branch circuits and main feeders in homes, small offices, and light industrial installations where reliable protection is essential.

• Manufacturer: Siemens
• Part Number: QJ22B150
• Type: Thermal-magnetic molded case circuit breaker (MCCB)
• Amperage Rating: 150A
• Voltage Rating: 240V
• Number of Poles: 2
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Use cases include upgrading or replacing a failed breaker in Siemens panelboards and load centers, protecting critical branch circuits in residential service panels, and supplying stable protection for lighting, receptacle, and small equipment circuits in commercial or light industrial settings. If you need a reliable, compatible solution for Siemens systems, the QJ22B150 delivers predictable protection and straightforward installation.