Siemens HQR22B150H - 150 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens HQR22B150H — a 150 A, 240 V, 2-pole bolt-on molded case circuit breaker designed to guard your panelboards and load centers against overcurrent and short-circuit events. Built for durability, this unit anchors securely with bolt-on mounting for a rigid, vibration-resistant bus connection, delivering dependable protection where it matters most.

Why this breaker stands out

• Secure bolt-on mounting delivers a rock-solid connection that minimizes loosening from vibration or panel movement, enhancing long-term reliability.
• Thermal-magnetic trip unit provides stable, repeatable protection by reacting to both overload (thermal) and instantaneous short-circuits (magnetic), helping prevent nuisance trips while safeguarding wiring and equipment.
• OEM-ready compatibility designed to work seamlessly with Siemens load centers and panelboards, simplifying replacement, upgrades, or modular expansions in existing installations.
• Versatile for multiple sectors suitable for residential, commercial, and light industrial applications where dependable branch circuit protection is critical.

Ideal use cases and practical scenarios

• Upgrade or replace legacy breakers in service panels, subpanels, or distributed load centers where a sturdy bolt-on solution is preferred.
• Protection for high-load circuits in light commercial spaces such as offices, small retail, or workshops that demand consistent trip characteristics under varying ambient conditions.
• New installations requiring a reliable, code-compliant 2-pole 150 A breaker to safeguard main distribution paths and critical branch circuits.

Performance you can rely on

The HQR22B150H is purpose-built to deliver precise protection where it’s needed most. Its thermal-magnetic mechanism responds quickly to short circuits while maintaining stable operation during normal loading, reducing the risk of sudden outages and protecting conductors from damage. The bolt-on design not only simplifies future maintenance but also minimizes connection resistance that can accumulate with time in vibration-prone environments.

Technical snapshot

• Manufacturer: Siemens
• Part number: HQR22B150H
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 150 A
• Voltage rating: 240 V
• Poles: 2
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Choose the Siemens HQR22B150H when you need a dependable, OEM-compatible solution that combines robust mechanical mounting with precise thermal-magnetic protection. It’s engineered to keep critical circuits safe in a range of residential, commercial, and light industrial panel environments, delivering consistent performance you can trust year after year.