LZS:RT7872P

**LZS:RT7872P** 

**Data sheet** 

plug-in socket for RT relay base with logical isolation, base with logical isolation, spring-loaded terminal (push-in) 

||plug-in socket for RT relay base with logical isolation, base with logical isolation,<br>spring-loaded terminal (push-in)|
|---|---|
|**product brand name**|SIRIUS|
|**product type designation**|LZS|
|**General technical data**<br>~~|~~||
|**display version LED**<br>~~|~~|No<br>~~|~~|
|**reference code according to IEC 81346-2**|U|
|**Substance Prohibitance(Date)**|05/01/2012|
|**Net Weight**|0.039 kg|
|**Mechanical data**<br>~~|~~||
|**product componentplug-in socket**<br>~~|~~|Yes<br>~~|~~|
|**design of the snap-on socket base**|Socket with logic isolation|
|**design of the relay operating mechanism**|poled|
|**Auxiliary circuit**<br>~~|~~||
|**number of NC contacts for auxiliary contacts**<br>~~|~~|0<br>~~|~~|
|**number of NO contacts for auxiliary contacts**|0|
|number of CO contacts for auxiliarycontacts|0|
|**Connections/ Terminals**<br>~~|~~||
|**product function removable terminal**<br>~~|~~|No<br>~~|~~|
|**type of electrical connection**|spring-loaded terminals|
|**type of connectable conductor cross-sections**||
|● solid|1x(0,75 ... 1,5), 2x(0,75 ... 1,0), 2x 1,5|
|● finelystranded with core endprocessing|1x(0,75 ... 1,5), 2x 0,75|
|● finelystranded without core endprocessing|1x(0,75 ... 1,5), 2x(0,75 ... 1,0), 2x 1,5|
|● for AWG cables solid|1x(18 ... 16), 2x(18 ... 16)|
|● for AWG cables stranded|1x(18 ... 16), 2x(18 ... 16)|
|**connectable conductor cross-section**||
|● solid|0.75 ... 1.5 mm²|
|● finelystranded with core endprocessing|0.75 ... 1.5 mm²|
|● finelystranded without core endprocessing|0.75 ... 1.5 mm²|
|**AWG number as coded connectable conductor cross**<br>**section**||
|● solid|18 ... 16|
|● stranded|18 ... 16|
|**Installation/ mounting/ dimensions**<br>~~|~~||
|**mounting position**<br>~~|~~|any<br>~~|~~|
|**fastening method**|snap-on mounting|
|**height**|98 mm|
|**width**|15.5 mm|
|**depth**|48.3 mm|
|**required spacing**||



LZS:RT7872P Page 1/5 

Subject to change without notice © Copyright Siemens 

5/9/2026 

● with side-by-side mounting — forwards 0 mm — backwards 0 mm — upwards 0 mm — downwards 0 mm — at the side 0 mm ● for grounded parts — forwards 0 mm — backwards 0 mm — upwards 0 mm — at the side 0 mm — downwards 0 mm ● for live parts — forwards 0 mm — backwards 0 mm — upwards 0 mm — downwards 0 mm — at the side 0 mm ~~ee~~ **Ambient conditions ambient temperature** ● during operation -40 ... +70 °C ● during storage -20 ... +70 °C ● during transport -20 ... +70 °C ~~ee~~ **Approvals Certificates Environment General Product Approval other** Environmental ConConfirmation firmations ~~a~~ HAE s Sf **other** Confirmation ~~~~~ QC PASS ~~e~~ **Further information** ~~e~~ **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=LZS:RT7872P **Cax online generator** https://support.automation.siemens.com/WW/CAXorder/default.aspx?lang=en&mlfb=LZS:RT7872P **Service&Support (Manuals, Certificates, Characteristics, FAQs,...)** https://support.industry.siemens.com/cs/ww/en/ps/LZS:RT7872P **Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, EPLAN macros, ...)** https://www.automation.siemens.com/bilddb/cax_de.aspx?mlfb=LZS:RT7872P&lang=en 

LZS:RT7872P Page 2/5 

Subject to change without notice © Copyright Siemens 

5/9/2026 

**==> picture [511 x 360] intentionally omitted <==**

LZS:RT7872P Page 3/5 

Subject to change without notice © Copyright Siemens 

5/9/2026 

LZS:RT7872P Page 4/5 

Subject to change without notice © Copyright Siemens 

5/9/2026 

**==> picture [390 x 333] intentionally omitted <==**

**----- Start of picture text -----**<br>
-U<br>last modified: 10/22/2025<br>A1 11 21<br>A2 12 14 22 24<br>**----- End of picture text -----**<br>


LZS:RT7872P Page 5/5 

Subject to change without notice © Copyright Siemens 

5/9/2026