SQUARE D QO350 Miniature Circuit Breaker, 50 A, 3-Pole, 120/240V AC, 10kA
The SQUARE D QO350 is a three-pole, 50 A miniature circuit breaker from the QO Series, designed for plug-in installation in QO Load Centers and NQ Panelboards. It is rated for 120/240V AC with a maximum AIR rating of…
SKU 3G-OTH-21989
Also listed as: QO 350 · QO-350
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
Need installation or engineering help?
Ask a question
Product Description
The SQUARE D QO350 is a three-pole, 50 A miniature circuit breaker from the QO Series, designed for plug-in installation in QO Load Centers and NQ Panelboards. It is rated for 120/240V AC with a maximum AIR rating of 10kA at 120/240V AC, and is a three-phase device.
Frequently Asked Questions
What is the SQUARE D QO350 miniature circuit breaker used for?
The SQUARE D QO350 is a three-pole, 50 A miniature circuit breaker used for overcurrent protection in three-phase electrical systems. It is designed for plug-in installation in QO Load Centers and NQ Panelboards, making it suitable for commercial and industrial branch circuit protection at 120/240V AC.
What are the specifications of the SQUARE D QO350 circuit breaker?
The SQUARE D QO350 is a three-pole, 50 A miniature circuit breaker rated for 120/240V AC with a maximum AIR rating of 10kA at 120/240V AC. It is a three-phase device from the QO Series, designed for plug-in use with QO Load Centers and NQ Panelboards. The manufacturer part number is QO350.
Where to buy the SQUARE D QO350 circuit breaker worldwide?
You can source the SQUARE D QO350 circuit breaker through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we provide competitive pricing and reliable sourcing for this QO Series breaker.
How to install the SQUARE D QO350 circuit breaker?
To install the SQUARE D QO350, ensure the panel is de-energized. Align the breaker's plug-in tabs with the bus bar in a QO Load Center or NQ Panelboard, then press firmly until it snaps into place. Verify the breaker is fully seated and the handle operates freely. Always follow local electrical codes and use appropriate personal protective equipment.
Used in
Common applications for SQUARE DSQUARE D Products
3G Electric supplies SQUARE D qo series, plug-in square d miniature circuit breakers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
