Siemens | QJ23B175HA02 | Circuit Breaker | 175A | 3-Pole | 240V | Bolt-On

Siemens QJ23B175HA02 delivers dependable three-phase protection in a compact, bolt-on package. With a 175A rating at 240V and 3-pole configuration, this circuit breaker is purpose-built for maintenance, retrofit, and replacement projects where exact specifications matter. Versatile and rugged, it protects essential power feeds in industrial and commercial panels while simplifying field servicing.

• Amperage: 175A
• Poles: 3-Pole
• Voltage: 240V
• Mounting: Bolt-On
• Part Number: QJ23B175HA02
• Best use: Maintenance, retrofit, and replacement where matching specs are required

Why this Siemens QJ Circuit Breaker stands out

Designed for reliability in demanding environments, this 3-pole, 240V device is ideal for protecting motor feeders, large loads, and 3-phase distribution circuits. The bolt-on mounting provides a solid, vibration-resistant connection for panels that require a robust, serviceable protection solution. When a panel or installation specifies the QJ family, the QJ23B175HA02 ensures seamless integration with existing wiring schemes and future expansions.

Use cases and ideal applications

• Industrial control panels and manufacturing lines with three-phase motors
• Retrofits in facilities upgrading power distribution to 175A feeders
• Maintenance replacements in commercial HVAC, chillers, or process equipment
• New installations in panels designed for bolt-on protection units

Installation and compatibility tips

Before ordering, confirm the fit and ratings match your system. The part number QJ23B175HA02 serves as the most reliable reference for compatibility. Ensure your panel supports a 3-pole, 240V, bolt-on configuration and that the mounting hardware is appropriate for a secure, code-compliant installation. If you’re replacing an existing unit, verify the replacement aligns with the same amperage, polarity, and trip characteristics to maintain consistent protection and trip performance.

What you gain with this Siemens circuit breaker

Peace of mind from a trusted Siemens protection device designed for real-world, high-demand environments. By matching precise specs—175A, 3-pole, 240V, bolt-on—you minimize compatibility risks and downtime, delivering consistent protection for critical loads and motor circuits. This is the practical, scalable choice for ongoing reliability in modern electrical systems.