Subscribe To Our Newsletter
Get the latest updates on new products and upcoming sales
Need Help?


Couldn't load pickup availability
Siemens | Differential Pressure Switch Qbm81-5 is a high-quality product manufactured by Siemens Switzerland Ltd. This HVAC product, with the code Qbm81-50611171, is designed to efficiently regulate differential pressures. It can handle a wide range of pressures, from 0.5 to 5000 Pa, with a maximum tolerance of ±50 Pa.
The IP54-rated Qbm81-5 is built to withstand harsh environmental conditions, with a temperature range of -20 to 85 degrees Celsius. This durable pressure switch is assembled in Switzerland, ensuring top-notch quality and reliability. Weighing just 140 grams, it is lightweight and easy to install in various HVAC systems.
Whether you are looking to monitor pressure differentials in industrial or commercial HVAC applications, the Siemens Qbm81-5 is a dependable choice. Trust in Siemens' reputation for excellence in HVAC products and experience the precision and accuracy of the Qbm81-5 differential pressure switch.
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.
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.
Get the latest updates on new products and upcoming sales
Thanks for subscribing!
This email has been registered!