Siemens QRH23B225L - 225 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens QRH23B225L, a robust 225 A, 240 V, 3-pole bolt-on molded case circuit breaker designed to protect critical branch circuits in panelboards and load centers. Built for reliability in residential, commercial, and light industrial settings, this unit delivers steady protection when it matters most.

Why choose the QRH23B225L

• Secure bolt-on mounting: A rigid, vibration-resistant bus connection that stays tight under demanding conditions, minimizing loose connections and unwanted trips.
• Thermal-magnetic trip unit: Combines precise thermal overload protection with magnetic short-circuit response for fast, repeatable protection across temperature variations.
• OEM-compatible design: Engineered to pair with matching Siemens OEM load centers and panelboards, ensuring proper fit, coordination, and long-term reliability.
• Three-pole, high-capacity protection: Ideal for 3-phase distribution — handles substantial load currents while safeguarding all phases in tandem.
• Durable construction for demanding use: Molded-case design and bolt-on format built to withstand busy electrical environments without compromising performance.

Technical specifications

• Manufacturer: Siemens
• Part Number: QRH23B225L
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 225 A
• Voltage Rating: 240 V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal applications and use cases

• Panelboard and load center installations in commercial buildings needing reliable 3-phase protection for large feeders
• Residential or light industrial panels where a high-current main protection device is required
• Maintenance or retrofit projects that demand OEM-compatible components for seamless performance with existing Siemens equipment
• Environments with equipment vibration or movement where a secure bolt-on connection enhances protection reliability

Practical tips for installation and performance

Verify that your panel setup supports bolt-on breakers to ensure a proper fit and secure mounting. Because the QRH23B225L is designed to integrate with Siemens’ own panel inventories, it helps maintain consistent trip characteristics and simplifying future maintenance or part replacements. With its thermal-magnetic protection, you gain predictable response to overloads and short circuits, reducing nuisance trips while safeguarding connected loads.