Siemens 3RH1921-1DA11 Replacement Auxiliary Contact

Yes. All BRAH Electric products are engineered as 1:1 direct replacements for the corresponding OEM part. No modifications, adapters, or special wiring are required for installation.*
*Exceptions may apply.

Every BRAH product ships with a 2-year warranty from the date of invoice. We guarantee proper function without defects according to provided specifications. Contact Kits carry a 6-month warranty.

Yes. If you are purchasing 10 or more units, or plan to buy regularly, you may qualify for our volume or reseller pricing program. Click "Become a Volume Buyer or Reseller and Save!" on the product page or call us at (855) 355-2724.

Returns must be approved by a BRAH Electric representative with an RMA number. Returns within 30 days of shipment are subject to a restocking charge of 25–50%. Items are non-refundable after 30 days. Contact our support team to request an RMA. If you are unsure about product fit, call us at (855) 355-2724. See our Policies page for full details.

In-stock items ordered before 3:00 PM (Pacific) ship the same business day. You can see the live shipping countdown timer on the product page. Most domestic orders arrive within 2–5 business days.

Yes. This BRAH replacement is engineered for direct compatibility with Siemens motor control equipment and follows the same mounting and electrical specifications as the original part.

B3RH1921-1DA11 is a direct replacement for 3RH1921-1DA11. No modifications or adapters are required—it installs like the original.

Yes. B3RH1921-1DA11 is a 1:1 drop-in replacement for 3RH1921-1DA11 in Siemens applications. Same mounting and wiring.