
9421-NW2 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $49.95 | Condition is Used, Square D 9421-NW2 Disconnect Switch Ser.A, FREE SHIPPING | 100.0% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $155.00 | Condition is New – Open box, SQUARE D 9421-NW2 SER.A SWITCH NSNP, FREE SHIPPING | 99.8% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $99.99 | Condition is New, *FREE SHIPPING* SQUARE D 9421-NW2 SER.A DISCONNECT SWITCH FOR 9421INC/ND *NEW*, FREE SHIPPING | 100.0% |

The Square 9421-NW2 Disconnect Switch Series A is a versatile and reliable electrical disconnect solution designed for various applications. This switch is manufactured by Square D, a leading brand known for its high-quality electrical equipment.
The Square 9421-NW2 is a type NW disconnect switch, which is suitable for use in industrial and commercial settings. It is rated for a continuous current of 600 amperes and a maximum interrupting current of 10,000 amperes, making it an ideal choice for heavy-duty applications. The switch features a frame size of 9 inches by 4 inches, which is compact yet robust enough to handle high electrical loads.
The Square 9421-NW2 Disconnect Switch Series A is designed with safety in mind. It is UL listed and meets the requirements of UL 489-14 for disconnecting switches. The switch is also equipped with a ground fault interrupter (GFI) protection, which helps prevent electrical hazards caused by ground faults. The switch has a handle that is lockable in the open position, ensuring that the power is disconnected and preventing accidental closure.
The switch is designed for easy installation and maintenance. It comes with a NEMA 1-type weatherproof cover that protects the switch from dust, water, and other environmental hazards. The switch also features a clear viewing window that allows for easy visual confirmation of the switch position. The switch is rated for a temperature range of -30 F to 140 F, making it suitable for use in various climates.
The Square 9421-NW2 Disconnect Switch Series A is built with high-quality materials and components, ensuring durability and long-lasting performance. It is suitable for use with various types of electrical systems, including single-phase and three-phase systems. The switch is also compatible with various types of overcurrent protection devices, including fuses and circuit breakers.
In conclusion, the Square 9421-NW2 Disconnect Switch Series A is a reliable and versatile electrical disconnect solution that is suitable for various industrial and commercial applications. It is designed with safety features, easy installation, and long-lasting performance in mind. With its high current rating, compatibility with various electrical systems, and UL listing, this switch is an excellent choice for heavy-duty applications where safety and reliability are paramount.
The Square 9421-NW2 Disconnect Switch Series A is a device designed to provide safety and compliance with electrical codes during various industrial applications. Here are some pros and cons to help you make an informed decision about purchasing this switch:
Pros:1. Safety: This switch ensures safety in industrial applications by disconnecting power from equipment during maintenance or repair work, preventing electrical hazards.
2. Compliance: Adhering to codes and regulations is essential in industrial settings. This switch helps ensure that your operations remain compliant with electrical safety codes.
3. Durable: The Square 9421-NW2 Disconnect Switch Series A is designed for heavy-duty use, ensuring that it can withstand the rigors of industrial environments.
4. Easy to install: The switch is easy to install, making it a cost-effective solution for your electrical needs.
5. Versatile: This switch can be used in a wide range of industrial applications, making it a versatile addition to any workshop or industrial facility.
Cons:1. Cost: Compared to other types of switches, disconnect switches can be more expensive. This may be a significant consideration for small businesses or individuals.
2. Size: The switch is larger than some other types of switches, which may require additional space in your electrical panel or power distribution system.
3. Complex installation: While the switch itself is easy to install, the installation process for a disconnect switch can be more complex than for other types of switches, requiring additional wiring and connections.
In conclusion, the Square 9421-NW2 Disconnect Switch Series A offers several advantages, including safety, compliance, durability, ease of installation, and versatility. However, its higher cost and larger size may be disadvantages for some users. Ultimately, the decision to purchase this switch depends on the specific needs and budget of your industrial operation.
If you require a disconnect switch for safety reasons, are operating in a heavily regulated industry, or have the budget for a more expensive but reliable solution, then the Square 9421-NW2 Disconnect Switch Series A is a recommended option. If you have limited space or a tight budget, you may want to consider other types of switches or look for a more cost-effective disconnect switch model.
Details:
Square9421-nw2 disconnect switch ser.a.
specifications indusswitch:
- brand: Square D
- mpn: 9421-nw2
- part type: Switch
returns indusswitch:
- paid by: seller
- method: money back
- time: 30 days
- policy: returns accepted
general indusswitch:
- category: Business & Industrial > Electrical Equipment Supplies > Switches > Accessories
offer indusswitch:
- prices: $49.95–$155.00
- item condition:
- Used
- New – Open box
- New
- best offers: true
- options: ship-to-home
- in stock #: 3
- availability: in stock
- started: may 8, 2026
- sold #: 8
shipping indusswitch:
- carrier: ups
- transit: 3-6 days
- class: standard, one-day, expedited
- type: calculated
- service: ups ground, ups next day air, ups 2nd day air
payments indusswitch:
- credit card: discover
- wallet: paypal
- other
seller indusswitch:
- rating: 100.0%
- city: portland, oregon
- # reviews: 13957
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