Siemens QR23B150L 150 Amp 240 Volt 3-Pole Bolt-On Circuit Breaker

Siemens QR23B150L: 150A, 240V, 3-Pole Bolt-On Molded Case Circuit Breaker engineered for reliable branch circuit protection in panelboards and load centers. Built to endure demanding electrical environments, this unit delivers precise protection where it matters most—without compromising safety or performance. Key advantages that set this breaker apart - Secure bolt-on mounting for a rigid, vibration-resistant bus connection that stays locked in under the harsh conditions often found in commercial and industrial installations. - Thermal-magnetic trip unit provides stable, repeatable protection. It responds quickly to overloads and short circuits, while minimizing nuisance trips due to normal load variations. - Three-pole design enables synchronized protection for three-phase systems or multiple feeders, helping maintain balance and system integrity across circuits. - OEM-compatible compatibility ensures a seamless fit with matching Siemens load centers and panelboards, reducing installation time and ensuring reliable electrical performance. - Versatile applications spanning residential, commercial, and light industrial environments—from service entrances to subpanels—where dependable overcurrent and short-circuit protection is essential. What this means for you in real-world use - In a three-phase panel, the QR23B150L acts as a robust shield against damaging faults, allowing you to isolate faults quickly and keep other circuits running smoothly. - The bolt-on design is ideal for installations where vibration, motor loads, or ductwork vibrations could loosen weaker connections, providing a more secure, long-term connection. - The molded case construction offers consistent insulation and durability, reducing wear over time in environments with temperature fluctuations or dusty/pilfer-prone surroundings. Technical specifications at a glance - Manufacturer: Siemens - Part Number: QR23B150L - Type: Thermal-magnetic molded case circuit breaker - Amperage Rating: 150A - Voltage Rating: 240V - Number of Poles: 3 - Mounting Style: Bolt-on - Application: Branch circuit overcurrent and short-circuit protection Ideal for electricians and maintenance teams seeking a dependable, industry-standard solution, the Siemens QR23B150L delivers precise protection, solid reliability, and straightforward integration with your existing Siemens panelboards and load centers. When safety, stability, and performance matter most, this 3-pole bolt-on breaker keeps your electrical system protected and up to code—today and for years to come.