Square D | QJA32175 | Circuit Breaker | 175A | 3-Pole | 240V | 100kA

Square D QJA32175 Circuit Breaker — 175A, 3-Pole, 240V, 100kA. Built for demanding electrical environments, this breaker delivers dependable overcurrent protection in a compact, three-phase package. Whether you’re performing maintenance, a retrofit, or a straight replacement, this unit provides the exact specs you need to keep your system safe and up to code.

Why this model stands out

• Three-pole protection ensures simultaneous disconnection of all three phases, which is essential for balanced 3‑phase loads and preventing damage from phase-to-phase faults.
• 175A continuous rating matches common commercial and industrial distribution requirements, helping you protect feeders and equipment without nuisance tripping.
• 240V operation is tailored for standard 3‑phase commercial/industrial circuits, providing reliable interruption at the voltage level your panels use.
• 100kA interrupting capacity equips the breaker to safely interrupt high fault currents, reducing the risk of cascading damage to downstream components and wiring.
• Precise compatibility with the QJA family ensures you’re selecting a part designed to align with your existing Square D panel and protection scheme.

Key specifications at a glance

• Amperage: 175A
• Poles: 3-Pole
• Voltage: 240V
• Interrupting rating: 100kA
• Part number: QJA32175
• Application: suitable for maintenance, retrofit, and replacement where matching specs are required

How to use this breaker effectively

Use the QJA32175 in 3‑phase 240V load centers or panels that require a 175A, 3‑pole protection device with a high fault-current capability. Before ordering, confirm fit and ratings against your panel’s catalog and the existing protection scheme; the part number is your most reliable reference for compatibility.

Practical tips for installation and reliability

• Ensure the panel is de-energized and follow all lockout/tagout procedures before installation.
• Torque terminal connections to the manufacturer’s specification to maintain a solid, low-impedance connection.
• Cross-check the panel label and existing breakers to verify that a QJA32175 matches the required trip curve and coordination with neighboring devices.
• Store spares in a clean, dry environment to preserve internal mechanisms and trip indicators for quick, reliable replacements when needed.

Designed for professionals who demand precise protection without compromise, the Square D QJA32175 emerges as a trusted choice for safeguarding 3‑phase 240V distribution in industrial and commercial settings. If your installation requires a specific 175A, 3‑pole, 240V breaker with a robust 100kA interrupting rating, this unit delivers the performance and reliability you’re counting on.