SQUARE D Miniature Circuit Breaker: 70 A, 120/240V AC, Three Phase, 10kA at 120/240V AC
The SQUARE D QO Series Miniature Circuit Breaker (MPN QO3701021) is a 70 A, three-phase, plug-in breaker rated for 120/240V AC with a maximum AIR rating of 10kA at 120/240V AC. Designed for use with QO Load Centers…
SKU 3G-OTH-22106
Also listed as: QO 3701021 · QO-3701021
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 QO Series Miniature Circuit Breaker (MPN QO3701021) is a 70 A, three-phase, plug-in breaker rated for 120/240V AC with a maximum AIR rating of 10kA at 120/240V AC. Designed for use with QO Load Centers and NQ Panelboards, this 3-pole unit provides overcurrent protection in commercial and industrial electrical distribution systems.
Frequently Asked Questions
What is the SQUARE D QO3701021 miniature circuit breaker used for?
The SQUARE D QO3701021 provides overcurrent protection in commercial and industrial electrical distribution systems. It is designed for use with QO Load Centers and NQ Panelboards, protecting branch circuits in three-phase, 120/240V AC applications up to 70 A.
What are the specifications of the SQUARE D QO3701021 circuit breaker?
The SQUARE D QO3701021 is a 70 A, three-phase, plug-in miniature circuit breaker rated for 120/240V AC. It has a maximum AIR rating of 10kA at 120/240V AC and features 3 poles. It is part of the QO Series and is compatible with QO Load Centers and NQ Panelboards.
Where to buy the SQUARE D QO3701021 circuit breaker worldwide?
3G Electric supplies the SQUARE D QO3701021 miniature circuit breaker worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time on this QO Series breaker.
How to install the SQUARE D QO3701021 circuit breaker?
Install the SQUARE D QO3701021 by plugging it into a compatible QO Load Center or NQ Panelboard bus bar. Ensure the panel is de-energized, verify voltage and current ratings match the circuit, and firmly seat the breaker until it clicks. Follow local electrical codes and the manufacturer's instructions.
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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.
