SQUARE D Miniature Circuit Breaker: 20 A, 120/240V AC, Single Phase, 10kA at 120/240V AC
The SQUARE D QOB Series Miniature Circuit Breaker (SKU QOB1201021, MPN QOB1201021) is a 20 A, single-phase, bolt-on circuit breaker rated for 120/240V AC with a maximum AIR rating of 10kA at 120/240V AC. Designed for…
SKU 3G-OTH-22773
Also listed as: QOB 1201021 · QOB-1201021
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 QOB Series Miniature Circuit Breaker (SKU QOB1201021, MPN QOB1201021) is a 20 A, single-phase, bolt-on circuit breaker rated for 120/240V AC with a maximum AIR rating of 10kA at 120/240V AC. Designed for use with Square D NQOD panelboards, this 1-pole breaker provides overcurrent protection in industrial electrical distribution systems.
Frequently Asked Questions
What is the SQUARE D QOB1201021 miniature circuit breaker used for?
The SQUARE D QOB1201021 is a 20 A, single-phase, bolt-on miniature circuit breaker used for overcurrent protection in industrial electrical distribution systems. It is designed specifically for use with Square D NQOD panelboards, providing reliable protection for branch circuits in commercial and industrial facilities.
What are the specifications of the SQUARE D QOB1201021 circuit breaker?
The SQUARE D QOB1201021 is a 20 A, single-phase, 1-pole miniature circuit breaker rated for 120/240V AC. It has a maximum AIR rating of 10kA at 120/240V AC and is designed for use with Square D NQOD panelboards. The MPN is QOB1201021, and it is part of the QOB Series.
Where to buy the SQUARE D QOB1201021 circuit breaker worldwide?
You can source the SQUARE D QOB1201021 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 reliable sourcing for this Square D QOB Series breaker.
How to install the SQUARE D QOB1201021 bolt-on circuit breaker?
To install the SQUARE D QOB1201021, ensure the panelboard is de-energized. Align the breaker's bolt-on mounting tabs with the bus bar in a Square D NQOD panelboard, then tighten the mounting screw securely. Connect the load wire to the terminal and torque to manufacturer specifications. Always follow local electrical codes.
Used in
Common applications for SQUARE DSQUARE D Products
3G Electric supplies SQUARE D qob series, bolt-on square d miniature circuit breakers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
