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The IDEC ASD21L11N Selector Switch (used in NOV National Oilwell Varco applications, part number 20010639) is an industrial‑grade control device engineered to provide dependable mode or function selection in machinery, automation systems, and industrial control panels. Built to withstand frequent use and harsh environments, this selector switch enables clear, positive selection between operational states—such as ON/OFF, AUTO/MANUAL, or START/STOP—making it well‑suited for heavy‑duty equipment and complex control systems.
Key Features
Industrial selector switch for dependable mode or function selection
Designed for use in control panels, automation systems, and operator stations
Clear detent positions for intuitive operator feedback
Rugged construction engineered for harsh industrial environments
Suitable for frequent switching in heavy machinery and plant controls
Specifications
Product Name: IDEC ASD21L11N Selector Switch
Associated Part: NOV National Oilwell Varco 20010639
Brand: IDEC
Type: Industrial selector switch
Application: Mode selection and control interface in industrial systems
Installation: Panel mount in control cabinets and operator interfaces
Construction: Industrial‑grade switch housing
The IDEC ASD21L11N Selector Switch (NOV National Oilwell Varco 20010639) delivers reliable switching performance and intuitive operator control for industrial automation, machinery, and panel control applications. Its robust design and clear selection action make it a trusted choice for demanding operational environments.
Returns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
