SQUARE D QO3701021 Circuit Breaker 70A 120/240V 3-POLE

( Brand: Square D ), ( Part Type: Circuit Breaker ), ( True: True ), ( Manufacturer Part Number: QO3701021 )

Review SQUARE D Squareqo3701021 Circuit Breaker 70a 120/240v 3-pole

The SQO3701021 Circuit Breaker, manufactured by Square D, is a versatile and reliable electrical component designed for use in residential and commercial applications. This circuit breaker is a 3-pole, 70-ampere device, making it suitable for handling heavy electrical loads that require multiple circuits.

This circuit breaker operates on both 120-volt and 240-volt systems, providing flexibility for various electrical applications. Its 70-ampere rating ensures it can handle significant electrical currents, making it an excellent choice for powering appliances, HVAC systems, and other high-demand electrical loads.

The SQO3701021 Circuit Breaker is a 3-pole design, meaning it has three poles or sets of contacts. This configuration enables the circuit breaker to protect three separate circuits, making it an ideal solution for more complex electrical systems.

Square D's commitment to safety and reliability is evident in the design of this circuit breaker. It features a trip unit with a thermal-magnetic design, which provides both overload protection and short-circuit protection. This circuit breaker also has a built-in ground-fault sensor, which can detect and interrupt ground faults, adding an extra layer of safety to the electrical system.

The SQO3701021 Circuit Breaker is easy to install and operate. It comes with a clear and easy-to-read amperage rating, as well as a handle that can be easily moved to the "on" or "off" position. Additionally, it has a quick-trip mechanism that allows for fast response times during electrical faults, minimizing the risk of damage to the electrical system and potential fire hazards.

Overall, the SQO3701021 Circuit Breaker from Square D is a high-performing and safe electrical component. Its 70-ampere rating, 3-pole design, and compatibility with both 120-volt and 240-volt systems make it a versatile solution for handling heavy electrical loads in a variety of applications. With its built-in safety features, including thermal-magnetic trip unit and ground-fault sensor, this circuit breaker is an essential component for ensuring the safety and reliability of any electrical system.

Pros and Cons of Buying a Square D QO3701021 Circuit Breaker (70A, 120/240V, 3-Pole)

The Square D QO3701021 circuit breaker is a popular choice for residential and commercial electrical installations. This 70A, 120/240V, 3-pole circuit breaker offers several advantages but also comes with some potential drawbacks.

1. Safety: The Square D QO3701021 circuit breaker is designed with safety in mind. It features a thermal magnetic trip unit that senses both overload and short circuit conditions to prevent potential electrical hazards.

2. Versatility: This circuit breaker can be used for both 120V and 240V applications, making it a versatile choice for various electrical systems.

3. Durability: Square D circuit breakers are known for their robustness and long-lasting performance. The QO3701021 model is no exception, with its hardened brass contacts and heavy-duty construction.

4. Easy installation: The circuit breaker comes with a convenient side-mounted lug design, making it easier to install and connect wires.

1. Cost: Compared to some other circuit breakers in its class, the Square D QO3701021 circuit breaker might be considered more expensive.

2. Size: This circuit breaker is larger than some other models in its class, which could be a consideration for those with limited space in their electrical panels.

3. Weight: The circuit breaker's durability comes at a cost, as it is heavier than some other models, which could be a concern for those who need to frequently handle circuit breakers.

The Square D QO3701021 circuit breaker offers several advantages, including safety, versatility, durability, and easy installation. However, it comes with some potential drawbacks, such as cost, size, and weight. Ultimately, whether or not this circuit breaker is the right choice for you depends on your specific needs, budget, and installation requirements. If safety, versatility, and long-lasting performance are your top priorities, and you have the space and budget to accommodate its size and weight, then the Square D QO3701021 circuit breaker may be an excellent investment for your electrical system. If, however, cost or size is a significant concern, you may want to consider other options.

If you are in the market for a reliable and versatile circuit breaker with robust safety features and the ability to handle both 120V and 240V applications, the Square D QO3701021 circuit breaker is definitely worth considering. However, if cost or size is a significant concern, you may want to explore other options, such as the Eaton CH2SL120M120 or the Siemens 1GJH1-1BJ-R. It's important to weigh the pros and cons and consider your specific needs before making a decision.

Details:

Manufacturer Part #: QO3701021. Feel free to make an offer. It is designed for use in QO load centers and compatible with various panel boards.: SquareQO3701021 Circuit Breaker 70A 120/240V 3-Pole, This is a Used 3-Pole.

part #: qo3701021 prices

• $189.00-$509.92

specifications plcmechanize:

• brand: Square D
• part type: Circuit Breaker
• true: True
• manufacturer part number: QO3701021

shipping plcmechanize:

• type: Calculated
• carrier: UPS
• cost: $0.00
• service: UPS Ground, UPS Next Day Air, UPS 2nd Day Air
• transit: 4-7 Days
• class: Standard, One-day, Expedited

payments plcmechanize:

• other
• wallet: Apple-pay
• credit card: Discover

offer plcmechanize:

• quantity: 2
• started: February 22, 2026
• best offers: True
• options: Ship-to-home
• sold: 0
• availability: In Stock

general plcmechanize:

• Industrial Automation Motion Controls > PLCs HMIs > PLC Processors
• condition: Used

returns plcmechanize:

• method: Money back
• policy: Returns Accepted
• time: 60 Days
• paid by: Seller

seller plcmechanize:

• # reviews: 3581
• city: Fort Collins, Colorado
• rating: 99.9%

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