# Adapter, Safety Relay
**URL**: https://novapart.co/products/3TK2810-1B/adapter-safety-relay
**SKU**: 3TK2810-1B
**Manufacturer**: SIEMENS
**Category**: Switches & Relays || Relays || Relay Accessories || Other Relay Accessories
**Price**: €138.0500
**Stock**: 10+
## Specifications
| Parameter | Value |
|---|---|
| Product Range | SIRUS 3TK28 Series |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:3533995/)
**3TK2810-1B**
**Data sheet**
SIRIUS safety relay Adapter for 3TK2810-1 for connecting 25-pole encoders, Type: SIEMENS/HEIDENHAIN
**==> picture [510 x 361] intentionally omitted <==**
**----- Start of picture text -----**
||||
|---|---|---|
|product brand name|SIRIUS|
|product designation|Adapters|
|product type designation|3TK28|
|ee|Product Function|
|suitability for use|
|● position switch monitoring|No|
|● EMERGENCY-OFF circuit monitoring|No|
|● valve monitoring|No|
|● opto-electronic protection device monitoring|No|
|● tactile sensor monitoring|No|
|● magnetically operated switch monitoring|No|
|● proximity switch monitoring|No|
|● safety-related circuits|No|
|eee|General technical data|
|certificate of suitability UL approval|No|
|Substance Prohibitance (day/month/year)|05/01/2012|
|SVHC substance name|Lead CAS-No. 7439-92-1|
|Net Weight|0.058 g|
|ee|Inputs|
|design of input|
|● feedback input|No|
|● start input|No|
|Connections/ Terminals|
|ess|
|type of electrical connection plug-in socket|No|
|ee|Approvals Certificates|
|Environment|General Product Approval|other|
|Environmental Con-|Confirmation|Confirmation|
|firmations|
**----- End of picture text -----**
## **Railway**
Confirmation
Subject to change without notice © Copyright Siemens
3TK28101B Page 1/2
6/1/2026
## **Further information**
## **Information on the packaging**
https://support.industry.siemens.com/cs/ww/en/view/109813875 **Information for data generation and storage** https://support.industry.siemens.com/cs/ww/en/view/109995012 **Information- and Downloadcenter (Catalogs, Brochures,…)** https://www.siemens.com/ic10 **Industry Mall (Online ordering system)** https://mall.industry.siemens.com/mall/en/en/Catalog/product?mlfb=3TK2810-1B **Cax online generator** https://support.automation.siemens.com/WW/CAXorder/default.aspx?lang=en&mlfb=3TK2810-1B **Service&Support (Manuals, Certificates, Characteristics, FAQs,...)** https://support.industry.siemens.com/cs/ww/en/ps/3TK2810-1B **Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, EPLAN macros, ...)** https://www.automation.siemens.com/bilddb/cax_de.aspx?mlfb=3TK2810-1B&lang=en
**==> picture [428 x 194] intentionally omitted <==**
**----- Start of picture text -----**
-F
U
GND
E1
E2
B A
8 1
A1+ T4 ST MAG T1 EA1 P1 13 23
A2- T3 RF1 RF2 T2 EA2 P2 15 25 14 24 LAN
**----- End of picture text -----**
**last modified:** 12/7/2025
Subject to change without notice © Copyright Siemens
3TK28101B Page 2/2
6/1/2026
## Links
- [View this product on Novapart](https://novapart.co/products/3TK2810-1B/adapter-safety-relay)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/siemens/3tk2810-1b/other-relay-accessories/dp/3533995)
---
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