Siemens HQR23B250 - 250 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Relied upon by electrical professionals for dependable branch circuit protection, the Siemens HQR23B250 delivers solid performance in panelboards and load centers. With a 250A rating at 240V and a true 3-pole design, this bolt-on molded case circuit breaker is built to safeguard heavy-duty circuits in residential, commercial, and light industrial settings.

Why this breaker stands out

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection, reducing movement and maintaining reliable contact over time—even in rooms with equipment vibration or frequent cycling.
• Thermal-magnetic trip unit delivers stable, repeatable protection by combining overcurrent and short-circuit sensing. This means predictable tripping behavior and consistent protection for your most critical circuits.
• OEM-compatible design is engineered to work seamlessly with matching Siemens load centers and panelboards, ensuring smooth installation and serviceability.
• Three-pole, 250A performance ideal for balanced three-phase systems, providing simultaneous interruption on all conductors to prevent phase-to-phase faults and equipment damage.
• Versatile for multiple applications—suitable for residential subdivisions, commercial spaces, and light industrial environments where robust, reliable protection matters most.

Practical use cases

• Upgrading or expanding panelboards in commercial offices or retail spaces that demand dependable overcurrent protection on three-phase feeders.
• Installing a subpanel in a data room or mechanical space where vibration and constant cycling require a secure, high-capacity breaker.
• Replacing aging breakers in panel centers to restore precise protection curves and reduce nuisance trips on critical circuits.

Technical snapshot

• Manufacturer: Siemens
• Part Number: HQR23B250
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 250A
• Voltage Rating: 240V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Designed for reliability under demanding conditions, the Siemens HQR23B250 is a smart choice when you need robust protection that aligns with Siemens’ panelboard ecosystems. Pair it with compatible load centers, follow proper bolt-on installation practices, and you’ll gain long-term protection for essential electrical infrastructure.