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 QOB2401021) 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. This 2-pole unit is designed…
SKU 3G-OTH-23457
Also listed as: QOB 2401021 · QOB-2401021
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.
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Product Description
The SQUARE D QOB Series Miniature Circuit Breaker (MPN QOB2401021) 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. This 2-pole unit is designed for use with Square D NQOD Panelboards.
Frequently Asked Questions
What is the SQUARE D QOB2401021 miniature circuit breaker used for?
The SQUARE D QOB2401021 is a 40 A, 2-pole bolt-on miniature circuit breaker used for overcurrent protection in single-phase 120/240V AC branch circuits. It is designed specifically for use with Square D NQOD panelboards in commercial and industrial electrical distribution systems.
What are the specifications of the SQUARE D QOB2401021 circuit breaker?
The SQUARE D QOB2401021 is a 40 A, single-phase, 2-pole miniature circuit breaker rated 120/240V AC with a maximum AIR rating of 10kA at 120/240V AC. It is a bolt-on QOB Series unit for use with Square D NQOD panelboards. The manufacturer part number is QOB2401021.
Where to buy the SQUARE D QOB2401021 circuit breaker worldwide?
3G Electric supplies the SQUARE D QOB2401021 miniature circuit breaker worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time on this QOB Series 40 A breaker.
How to install the SQUARE D QOB2401021 bolt-on circuit breaker?
To install the SQUARE D QOB2401021, ensure the panelboard is de-energized. Align the bolt-on terminals with the bus bar connections in a Square D NQOD panelboard and tighten the mounting screws to the manufacturer's torque specification. Always follow local electrical codes and use proper personal protective equipment.
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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.
