Square D QO Circuit Breaker, 3-PH 50A

Square D QO Circuit Breaker, 3-PH 50A

The QO350 Square D QO Circuit Breaker, 3-Pole 50A is a robust thermal-magnetic breaker built for dependable overcurrent protection and switching on AC and DC systems. It features a trip-free, over-center toggle with quick-make/quick-break action and VisiTrip indication for a clear visual signal when the breaker has tripped. With plug-in mounting and strong interrupting capability, it’s a solid choice for QO load centers needing a 50A, 3-pole breaker.

Country of Origin: Varies by production batch

Key Features / Specifications

• Brand / Line: Square D QO
• Model: QO350
• Product Type: Thermal-magnetic circuit breaker
• Poles: 3-pole
• Amperage: 50A
• Voltage Rating: 120/240 VAC
• Mounting: Plug-in
• Interrupting Rating: 10 kA breaking capacity
• Mechanism: Over-center, trip-free toggle with quick make / quick break action and positive handle indication
• Trip Indication: VisiTrip visual trip indicator
• Accessories (available): Shunt trips, auxiliary switches, alarm switches
• Certifications: UL Listed (UL File E84967); CSA Certified (CSA Master Contract 153555)

Ideal For

• QO panel installations needing a 3-pole, 50A breaker
• Applications requiring clear trip status with VisiTrip indication
• Users who want a durable breaker with quick action and positive handle indication
• Builds that may require add-on functions like shunt trip or auxiliary/alarm switches