Siemens Auxiliary Contact: 2NO, 10 A Max Current (AC), Side Mount
The SIEMENS Auxiliary Contact (MPN 3RH29211DA20) is a side-mounted accessory for SIRIUS 3RH2 contactor relays, featuring 2 normally open (2NO) contacts and a maximum AC current rating of 10 A. This side-mount design…
SKU 3G-OTH-38500
Need installation or engineering help?
Ask a question
Product Description
The SIEMENS Auxiliary Contact (MPN 3RH29211DA20) is a side-mounted accessory for SIRIUS 3RH2 contactor relays, featuring 2 normally open (2NO) contacts and a maximum AC current rating of 10 A. This side-mount design integrates directly with compatible Siemens relay systems to expand switching functionality.
Frequently Asked Questions
What is the SIEMENS auxiliary contact 3RH29211DA20 used for?
The SIEMENS auxiliary contact 3RH29211DA20 is used to add two normally open (2NO) switching points to SIRIUS 3RH2 contactor relays. It expands control circuit functionality in industrial automation, motor control centers, and panel building applications where additional signal or interlock contacts are required.
What are the specifications of the SIEMENS 3RH29211DA20 auxiliary contact?
The SIEMENS 3RH29211DA20 is a side-mounted auxiliary contact block with 2 normally open (2NO) contacts. It has a maximum AC current rating of 10 A and is compatible with SIRIUS 3RH2 contactor relays. The side-mount design allows direct mechanical integration without additional wiring.
Where to buy the SIEMENS 3RH29211DA20 auxiliary contact worldwide?
You can source the SIEMENS 3RH29211DA20 auxiliary contact worldwide through 3G Electric. As a global industrial equipment distributor, 3G Electric handles full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this Siemens SIRIUS series accessory.
How to install the SIEMENS 3RH29211DA20 auxiliary contact on a SIRIUS 3RH2 relay?
To install the SIEMENS 3RH29211DA20, first de-energize the SIRIUS 3RH2 contactor relay. Align the side-mount block with the designated slot on the relay housing and press firmly until it clicks into place. Secure any retaining clips if present. Verify mechanical operation before re-energizing the system.
Used in
Common applications for SiemensSiemens Products
3G Electric supplies Siemens siemens auxiliary contacts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















