SQUARE D Miniature Circuit Breaker: 40 A, 120/240V AC, Single Phase, 10kA at 120/240V AC
The SQUARE D QOB Series Miniature Circuit Breaker (MPN QOB1401021) is a 40 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…
SKU 3G-OTH-23100
Also listed as: QOB 1401021 · QOB-1401021
Local availability & support — Singapore
- Local office
- 20 Woodlands Link #09-05, Singapore 738733
- Phone
- +65 8878 8355
- Delivery
- Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
- Payment
- Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
- Ships to
- Singapore
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Product Description
The SQUARE D QOB Series Miniature Circuit Breaker (MPN QOB1401021) is a 40 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 QOB1401021 miniature circuit breaker used for?
The SQUARE D QOB1401021 is a 40 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 QOB1401021 circuit breaker?
The SQUARE D QOB1401021 is a 1-pole, 40 A miniature circuit breaker rated for 120/240V AC single-phase operation. It has a maximum AIR rating of 10kA at 120/240V AC. This bolt-on QOB Series breaker is designed for use with Square D NQOD panelboards and provides overcurrent protection in industrial electrical systems.
Where to buy the SQUARE D QOB1401021 circuit breaker worldwide?
3G Electric supplies the SQUARE D QOB1401021 miniature circuit breaker worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time. We source genuine Square D components for industrial electrical systems.
How to install the SQUARE D QOB1401021 bolt-on circuit breaker?
To install the SQUARE D QOB1401021, ensure the panelboard is de-energized. Align the breaker's bolt-on tabs with the mounting slots in a Square D NQOD panelboard, then tighten the mounting screw securely. Connect the load wire to the breaker terminal and torque to manufacturer specifications. 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 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.
