Siemens | QJ3M175H | Circuit Breaker | 175A | 3-Pole | 240V | Bolt-On

Engineered by Siemens for demanding electrical systems, the QJ3M175H Circuit Breaker delivers trusted protection for 240V, three‑phase feeders. With a 175A rating and a 3‑pole configuration, this bolt‑on breaker is designed for retrofit, maintenance, and replacement projects where exact specifications matter and reliable tripping is critical.

Core specifications at a glance

• Amperage: 175 A
• Poles: 3-Pole
• Voltage: 240 V
• Mounting: Bolt-On for secure, vibration‑resistant installation
• Part number: QJ3M175H—the best reference for compatibility

What this means in practical terms

• Protection for heavy-duty 3‑phase circuits in commercial and light industrial panels, preventing damage from short circuits and overloads.
• A bolt‑on design that provides a solid, code‑compliant connection, reducing the risk of loose terminals and arcing over time.
• Precise alignment with Siemens panel ecosystems, simplifying installation when upgrading or replacing existing protection devices.

Ideal applications

• Retrofits in commercial suites and small to mid‑size industrial facilities where a 175A, 3‑pole, 240V protection device is required.
• Maintenance and replacement scenarios where matching the exact Siemens part number ensures compatibility with existing bus connections and trip characteristics.
• New installations in panels designed for bolt‑on breakers that demand robust, long‑lasting protection for critical feeders.

Why choose the QJ3M175H over others

• Exact Siemens specifications mean predictable performance, trusted trip curves, and straightforward cross‑reference using the part number.
• The bolt‑on mounting delivers a more secure connection in environments with vibration or frequent panel access, enhancing long‑term reliability.
• Specifically matched for 240V three‑phase systems, reducing the risk of misapplication that can occur with universal or non‑Siemens devices.

Installation and compatibility tips

• Always confirm fit and ratings before ordering. The part number QJ3M175H is the clearest reference for panel compatibility.
• Check your panel labeling to ensure it supports bolt‑on 3‑pole breakers and is rated for 240V feeders.
• Follow manufacturer torque and installation procedures to ensure a secure connection and proper fault clearing.
• Use this breaker as part of a well‑documented protection scheme, aligning with your project’s electrical plan and safety standards.

Ready for upgrade or replacement, the Siemens QJ3M175H delivers dependable overcurrent protection for critical 240V three‑phase circuits. If you’re aligning exact specifications for a retrofit or maintenance project, this 175A, 3‑pole, bolt‑on solution from Siemens is purpose‑built to integrate smoothly with compatible panels and improve system reliability.