Square D | QOU3501200 | Circuit Breaker | 3-Pole | Bolt-On

Square D QOU3501200 circuit breaker is a purpose-built, 3-pole bolt-on solution designed for demanding maintenance, retrofit, and replacement projects in compatible Square D panels. When your electrical system needs reliable, field-ready protection that fits precisely, this unit delivers.

Compatibility and fit you can trust

• Poles: 3-Pole configuration suitable for 3-phase circuits
• Mounting: Bolt-On design for a secure, vibration-resistant connection
• Best reference for compatibility: Use the part number QOU3501200 to verify fit
• Important: Confirm your panel model and required ratings before ordering

Why this breaker stands out

Unlike generic substitutes, this Square D unit is engineered to align with the QOU footprint and mounting standards, reducing installation guesswork. The bolt-on format provides a robust mechanical connection that helps maintain continuous electrical contact under typical panel vibrations and cycling. This means fewer call-backs and a smoother path to restoring service after routine maintenance or retrofit work.

Ideal for

• Maintenance technicians performing three-phase panel servicing
• Retrofits where a precise 3-pole bolt-on breaker is required in Square D installations
• Replacement scenarios that demand exact compatibility with the QOU series

Practical use cases

• Upgrading aging distribution panels in commercial or light industrial settings
• Replacing failed breakers in existing 3-pole, bolt-on configurations without reconfiguring mounting hardware
• Refreshing spare parts inventory for service vans to minimize downtime on site

Installation and safety notes

Before purchase, verify that the panel model and required electrical ratings match the QOU3501200 specifications. When installing, follow standard safety protocols and local electrical codes, and torque and mounting procedures as outlined by the panel and breaker manufacturers. If in doubt, consult a licensed electrician to ensure proper fit, ratings alignment, and safe operation.

With the QOU3501200, you get a purpose-built 3-pole bolt-on breaker from Square D that emphasizes reliability, precise fit, and straightforward maintenance — the targeted choice for professionals facing retrofit, replacement, or routine service in compatible Square D panels.