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heroicons/solid/check Over 300,000 products in stock
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Siemens 3SU1050-4BF21-0AA0

RONIS key-operated switch, 22 mm, round, metal, shiny, lock
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The Siemens RONIS key-operated switch 3SU1050-4BF21-0AA0 is a robust and reliable control component designed for industrial control panels and machinery. With a standard 22 mm mounting diameter, it integrates seamlessly into Siemens SIRIUS command and signaling devices.


This round, metal switch features a shiny finish and a durable locking mechanism with lock number SB30. It is supplied with two keys and offers two latching switch positions (O-I) with a 90° actuating angle. Key removal is possible in position I, supporting controlled access and operational safety.


Designed for demanding industrial environments, this key-operated selector switch is ideal for authorization control, machine enable functions, and safety-related applications. Optional special locks such as SB31, 421, and 455 are available, providing flexibility for customized access management in professional electrical installations.

RONIS key-operated switch, 22 mm, round, metal, shiny, lock number SB30, with 2 keys, 2 switch positions O-I, latching, actuating angle 90°, 10:30h/13:30h, key removal I, possible special locks: SB31, 421, 455
General
Manufacturer:
Siemens
Range:
Sirius
PLM
Product phase:
Active
Logistics
Dimensions:
10.00 x 3.00 x 3.00
Weight:
0.15lbs
Commodity Code:
85389099
ECCN number:
N
EAN:
4011209970823
When you choose JCertified refurbished electronics, you save on water, raw materials, and CO₂ needed for the production of new electronics. Check below to see exactly how much you save with this specific refurbished product:
CO2 eq
-72%
Resource use minerals and metals
-95%
Water use
-83%
How do I order a product or repair online?
First, find your product in the webshop. On the product page, you can add the product or repair to your shopping cart. Then proceed to checkout. 
Why should I choose JC-Electronics?
You can rely on a stock of 300,000 pieces of industrial electronics from leading top-quality brands, both new and refurbished. Therefore, you can also find drives, PLCs, HMIs, and industrial PCs that are no longer produced with us. You always get a 2-year warranty. Additionally, refurbished products are circular, helping you reduce your ecological footprint.  Good to know: New products and tested refurbished products ordered before 16:00 CET are shipped the same day.
Why can I trust refurbished electronics from JC-Electronics?
All products are thoroughly cleaned, defects are repaired, and weak elements are proactively replaced. If they pass the endurance test, the products can be sold. You can recognize them by the JCertified warranty seal. The entire process has received the RecQ quality mark from DEKRA and the ISO14001:2015 certificate
How much warranty do I get on a product?
You always get a 2-year warranty on products, both refurbished and new. This is twice as much as the standard factory warranty from many manufacturers.
Are all products available from stock immediately?
New and tested refurbished products from our stock are always available immediately. Untested and non-refurbished products undergo a thorough refurbishment and an extensive testing procedure before shipment.
Can I order products urgently?
Yes, you can. New and refurbished products that are ready for shipment will be dispatched the same day if the order is received before 16:00 CET. An express shipment to the Netherlands, Belgium, Luxembourg, Germany, Austria, Switzerland, France, or Italy will arrive the next day. An express shipment to other countries in the European Union takes 2 days. An express shipment to countries outside the European Union takes 3 days. 
Why should I buy refurbished electronics?
There are several reasons to purchase a refurbished product. For example, because electronics are no longer made and are hard to get new. But also because refurbished is a sustainable choice, reducing your organization's ecological footprint. Whatever the reason, you always get a 2-year warranty on both refurbished and new electronics at JC-Electronics. 
How much are transport costs?
Transport costs are usually included in the price. There are a few exceptions. Check the overview of all transport costs.