Siemens HQR22B150 - 150 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Siemens HQR22B150 is a 150A, 240V, 2-pole bolt-on molded case circuit breaker designed to guard branch circuits against overcurrent and short-circuits. Built for panelboards and load centers, it delivers dependable, repeatable protection across residential, commercial, and light industrial applications.

• Secure bolt-on mounting creates a rigid, vibration-resistant bus connection, reducing movement and improving long-term reliability in demanding environments.
• Thermal-magnetic trip unit delivers fast magnetic tripping for short circuits and a controlled thermal trip for overloads, providing stable, predictable protection as loads evolve.
• 2-pole, 150A, 240V configuration protects both hot conductors of 240V circuits, making it ideal for main distribution paths and critical branch circuits.
• OEM-compatible design ensures seamless compatibility with matching Siemens OEM load centers and panelboards, simplifying installations and upgrades.
• Application versatility suited for residential service panels, commercial distribution boards, and light industrial panels where reliable protection is essential.
• Part and type HQR22B150, a thermal-magnetic molded case circuit breaker built for durable, long-lasting performance in real-world electrical systems.

Why choose the Siemens HQR22B150 for your panel?

When upgrading or configuring a panelboard or loadcenter, the HQR22B150 provides a robust, plug-resistant option that stays put under vibration and electrical chatter. The bolt-on mounting reduces accidental disconnections, while the thermal-magnetic trip mechanism delivers consistent performance across varied load profiles, helping prevent nuisance trips and ensuring circuit protection remains dependable when it matters most.

Ideal use cases

• New installations in residential service panels or small commercial distribution panels requiring a reliable 2-pole 150A breaker.
• Upgrades in retrofit projects where a secure, bolt-on connection is preferred over plug-in alternatives.
• Subdivision of 240V circuits that demand solid short-circuit protection and stable overload protection in light industrial equipment.

Technical snapshot

• Manufacturer: Siemens
• Part Number: HQR22B150
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 150A
• Voltage Rating: 240V
• Number of Poles: 2
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection