Square D QO3301021 - 30A, 3-Pole, Circuit Breaker

Square D QO3301021 is a 30A, 3-Pole circuit breaker engineered for dependable overcurrent protection in demanding electrical systems.

With a 3-Pole configuration, this unit interrupts all three phases in a three-phase circuit, delivering controlled and safe operation across panelboards, switchboards, and control panels. It’s ideal for industrial, commercial, and OEM applications where reliable protection is critical for distribution panels and motor control centers.

• Current rating: 30 amps
• Poles: 3-Pole
• Breaker type: Circuit Breaker
• Ideal for: Industrial, commercial, and OEM environments requiring dependable overcurrent protection
• Primary use cases: Distribution panels and motor control centers

Why this matters: in a three-phase setup, a 30A, 3-pole breaker provides immediate fault interruption to protect wiring, motors, and drives from overloads and short circuits, helping minimize downtime and equipment damage. The 3-pole design ensures all phases are monitored and protected consistently, reducing the risk of imbalanced loads and unnecessary wear on components.

Practical scenarios:

• Protect motors and feeders in motor control centers within manufacturing facilities
• Provide reliable branch-circuit protection in commercial electrical rooms
• Upgrade aging panelboards that require certified 30A, 3-pole protection

Designed to support safe, continuous operation in critical systems, the Square D QO3301021 delivers precise protection where uptime matters most. It aligns with standard distribution practices and offers robust protection for demanding industrial, commercial, and OEM applications.