Siemens 3RH2921-1DA11 Auxiliary Switch
Siemens Replacement HVACR Controls, Switches & Thermostats. Specifications: Product Type: Auxiliary Switch.
SKU 3G-OTH-73655
Also listed as: 3RH29211DA11 · 3RH2921 1DA11
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
Need installation or engineering help?
Ask a question
Product Description
Siemens Replacement HVACR Controls, Switches & Thermostats. Specifications: Product Type: Auxiliary Switch.
Frequently Asked Questions
What is the Siemens 3RH2921-1DA11 auxiliary switch used for?
The Siemens 3RH2921-1DA11 auxiliary switch is used in industrial control panels and HVACR systems to provide additional switching contacts for monitoring or signaling the position of contactors and relays. It is commonly applied in motor control centers, conveyor systems, and building automation to ensure reliable status feedback.
What are the specifications of the Siemens 3RH2921-1DA11 auxiliary switch?
The Siemens 3RH2921-1DA11 is an auxiliary switch with manufacturer part number 3RH2921-1DA11. It is designed for use with Siemens contactors and relays in industrial control applications. For detailed electrical ratings and mounting dimensions, refer to the Siemens technical datasheet.
Where to buy the Siemens 3RH2921-1DA11 auxiliary switch worldwide?
You can source the Siemens 3RH2921-1DA11 auxiliary switch through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact our team for pricing and lead time on this Siemens replacement HVACR control component.
How to install the Siemens 3RH2921-1DA11 auxiliary switch?
To install the Siemens 3RH2921-1DA11 auxiliary switch, first de-energize the panel. Mount the switch onto the contactor or relay using the provided clips, ensuring proper alignment. Wire the auxiliary contacts according to your control schematic, typically using 24 VDC or 230 VAC circuits. Test operation before restoring power.
Used in
Common applications for SiemensSiemens Products
3G Electric supplies Siemens replacement hvacr controls, switches & thermostats. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.