SQUARE D Miniature Circuit Breaker: 100 A, 120/240V AC, Three Phase, 10kA at 120/240V AC
The SQUARE D QOU Series Unit-Mount Miniature Circuit Breaker (MPN QOU31001021) is a three-phase, 100 A device rated for 120/240V AC with a maximum AIR rating of 10kA at 120/240V AC. Designed for use with heating…
SKU 3G-OTH-23355
Also listed as: QOU 31001021 · QOU-31001021
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 QOU Series Unit-Mount Miniature Circuit Breaker (MPN QOU31001021) is a three-phase, 100 A device rated for 120/240V AC with a maximum AIR rating of 10kA at 120/240V AC. Designed for use with heating applications, this 3-pole breaker provides overcurrent protection in a compact unit-mount form factor.
Frequently Asked Questions
What is the SQUARE D QOU31001021 miniature circuit breaker used for?
The SQUARE D QOU31001021 is a three-phase, 100 A miniature circuit breaker designed for overcurrent protection in heating applications. It is rated for 120/240V AC with a 10kA interrupting capacity, making it suitable for commercial and industrial heating equipment where reliable circuit protection is required.
What are the specifications of the SQUARE D QOU31001021?
The SQUARE D QOU31001021 is a 3-pole, three-phase miniature circuit breaker rated at 100 A and 120/240V AC. It has a maximum AIR rating of 10kA at 120/240V AC and is part of the QOU Series unit-mount design. It is intended for use with heating equipment.
Where to buy the SQUARE D QOU31001021 worldwide?
3G Electric supplies the SQUARE D QOU31001021 miniature circuit breaker to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us for pricing and lead time on this three-phase, 100 A breaker.
How to select the right SQUARE D QOU series breaker for heating?
To select the correct SQUARE D QOU series breaker for heating, match the voltage (120/240V AC), current rating (100 A), and phase (three-phase) to your equipment's requirements. Ensure the interrupting capacity (10kA) exceeds the available fault current. The QOU31001021 is a unit-mount, 3-pole option for heating applications.
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Common applications for SQUARE DSQUARE D Products
3G Electric supplies SQUARE D qou series, unit-mount square d miniature circuit breakers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
