Square D QOUMF3B - 3-Pole, Circuit Breaker

Introducing the Square D QOUMF3B — a 3-Pole circuit breaker designed for demanding electrical systems where dependable overcurrent protection is essential.

With a 3-pole configuration, this breaker delivers robust three-phase protection and flexible integration into panelboards, switchboards, and control panels. It’s the reliable choice for industrial, commercial, and OEM applications that require safe operation in distribution panels and motor control centers.

Key benefits of the QOUMF3B

• Three-pole design provides coordinated protection for three-phase circuits in a single, compact device
• Engineered for dependable operation in challenging environments, helping minimize downtime and equipment risk
• Versatile compatibility with panelboards, switchboards, and control panels commonly used in industrial settings
• Streamlines wiring and maintenance by consolidating overcurrent protection into one unit
• Ideal for protecting motors, drives, conveyors, and other three-phase equipment in distribution and control applications

Ideal use scenarios

• New installations of panelboards, switchboards, and motor control centers requiring three-phase protection
• Retrofits and upgrades in manufacturing lines where reliable three-phase protection is essential
• OEM equipment integrations where a compact, three-pole breaker simplifies enclosure design and wiring

Practical guidance for use

• Confirm the application is three-phase and that the enclosure accepts a 3-pole circuit breaker
• Consult electrical drawings to ensure proper mounting, alignment, and load termination
• Match conductor sizing and protective settings to the system design and load characteristics
• Incorporate regular inspections and testing into maintenance routines to verify ongoing protection and safe operation