Siemens | HQJ23B150H01S11 | Circuit Breaker | 150A | 3-Pole | 240V

Meet the Siemens HQJ23B150H01S11 circuit breaker — a purpose-built solution for reliable 150A protection in 3-pole, 240V electrical systems. Engineered to support maintenance, retrofit, and replacement needs, this unit provides precise, dependable disconnection to safeguard your panels and connected equipment.

• Amperage: 150A
• Poles: 3-Pole
• Voltage: 240V
• Part reference: HQJ23B150H01S11

Why this Siemens circuit breaker stands out

This breaker is purpose-built for environments where a precise, three-phase protection device is required. Its 3-pole configuration ensures simultaneous disconnection of all live conductors in multi-wire circuits, helping prevent phase imbalance and equipment damage. The HQJ23B150H01S11 designation signals compatibility with Siemens panels and assemblies that specify this exact part number, making it a trusted option for maintenance, retrofit, and replacement projects.

What problems it solves

• Prevents overloads and short circuits in 3-phase 240V systems, protecting both panel components and connected machinery.
• Provides a clear, rapid path to safety during fault conditions, reducing the risk of electrical damage and downtime.
• Offers a straightforward replacement option when existing protection gear in your Siemens panel requires an exact 150A, 3-pole, 240V unit.

Ideal use cases

• Maintenance: swap-in for aging or failed protection with minimal panel downtime.
• Retrofit: upgrade or modify a distribution setup to accommodate 150A, 3-phase loads.
• Replacement: when the panel specifies HQJ23B150H01S11 as the compatible part for continued protection.

Compatibility and installation tips

Before ordering, verify fit and ratings against your panel’s specifications. The part number HQJ23B150H01S11 is the most reliable reference for compatibility, so cross-check it with your panel documentation or Siemens documentation for exact fitment. If you’re replacing an existing breaker, ensure the installed frame and bus connection match the panel’s design to maintain proper electrical clearance and trip performance.

Who should consider this product

• Facility managers and electrical contractors maintaining Siemens panels that require a 150A, 3-pole, 240V protection device.
• Electrical engineers performing retrofits to support higher-demand loads in commercial or light industrial settings.
• technicians seeking a precise, OEM-referenced replacement to maintain system reliability and continuity.

With the Siemens HQJ23B150H01S11 circuit breaker, you gain a dependable, OEM-referenced solution that aligns with your existing protection strategy, streamlines maintenance planning, and helps ensure stable electrical performance across your distribution network.