Siemens QJ23B225H - 225 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Siemens QJ23B225H is a purpose-built safeguard for your 3-phase electrical infrastructure. With a robust 225 Amp rating and 240 Volt capacity, this 3-pole bolt-on molded case circuit breaker is designed to deliver dependable branch circuit overcurrent and short-circuit protection where reliability matters most—in panelboards and load centers. < ul >

Secure bolt-on mounting for a rigid, vibration-resistant bus connection. This design helps maintain consistent electrical contact and reduces movement-related wear over time.

Thermal-magnetic trip unit provides stable, repeatable protection across a range of fault currents, balancing fast response to short circuits with nuisance-trip resistance during transient faults.

Three-pole configuration suited for balanced protection in 3-phase systems, ensuring coordinated protection across all live conductors.

240V operating capacity aligned with common commercial and industrial panelboards and loadcenters, enabling straightforward integration into existing electrical architectures.

OEM-compatible design ensures seamless use with matching Siemens OEM panelboards and loadcenters for streamlined replacement and upgrades.

Versatile application ideal for residential, commercial, and light industrial environments where reliable circuit protection is essential.

Key specifications at a glance

• Manufacturer: Siemens
• Part Number: QJ23B225H
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 225A
• Voltage Rating: 240V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Who should consider the Siemens QJ23B225H? This breaker is crafted for professionals stocking panelboards and loadcenters that require a durable, high-capacity solution. It’s the practical choice for upgrading or replacing aging protection devices in residential multi-family setups, commercial offices, and light industrial facilities where stable, predictable trip performance is non-negotiable.

Why this matters in the real world: when electrical loads surge or a fault occurs, you want a breaker that trips decisively without compromising downstream equipment. The QJ23B225H’s bolt-on mounting reduces vibration-induced contact issues, while the thermal-magnetic trip unit delivers reliable protection across typical fault scenarios. Paired with compatible OEM panelboards, it minimizes compatibility concerns and simplifies procurement for project installs or replacements.

Practical usage tips:

• Ensure compatibility with your existing Siemens OEM panelboard or loadcenter to maintain warranty and performance expectations.
• Use in circuits where 225A protection is appropriate and where 3-pole, 240V operation is required for balanced, multi-location loads.
• Store spares in standard inventory for quick replacements in residential or light commercial equipment back-ups.

Choosing the Siemens QJ23B225H means selecting a trusted, purpose-built solution designed to deliver consistent protection, long-term reliability, and straightforward integration into established Siemens electrical ecosystems. If you’re planning a panel upgrade, retrofit, or routine maintenance, this 3-pole bolt-on breaker is prepared to perform where it counts—protecting people, wiring, and downstream devices with precision.