Sirius 3RK3 Series Safety Controller, 8 Safety Inputs, 2 Safety Outputs, 24 V dc

  • RS Stock No. 764-3957
  • Mfr. Part No. 3RK3111-1AA10
  • Manufacturer Siemens
Technical data sheets
Legislation and Compliance
RoHS Status: Not Applicable
COO (Country of Origin): DE
Product Details

Siemens Safety Controller

The Siemens 3RK3 modular safety system (MSS) is a freely parameterizable modular safety controller. The modular safety relay enables the interconnection of several safety applications. The comprehensive error and status diagnostics provide the possibility of finding errors in the system and localizing signals from sensors resulting in the reduction of plant downtimes. Its basic central unit is used wherever more than 3 safety functions have to be analysed and parameterizing the wiring of safety relays would be time-consuming and expensive to implement. This safety relay reads inputs along with controls outputs and communicates with higher-level controllers via an interface module. The entire safety program of an application is processed in the central unit. At the smallest configuration level, the 3RK3 basic central unit is already functional without the expansion modules that can be connected as options.

Features and Benefits

8 safety-related sensor inputs
1 safety-related relay output
1 safety- related solid-state output
Up to 7 expansion modules can be connected
Cyclic data exchange via PROFIBUS is up to 32bit
High flexibility and reliability of planning due to a modular design
More space in the control cabinet and lower costs thanks to a highly modular quantity structure
More functionality and time saving through a parameterizable software system
Extensive diagnostics on site and project documentation using the MSS ES software
Improved plant diagnostics and higher plant availability through data exchange via PROFIBUS


EN954: 1
ISO13849: 1
IP20 rated

Attribute Value
Series 3RK3
Number of Safety Inputs 8
Number of Safety Outputs 2
Safety Category 4
Supply Voltage 24 V dc
IP Rating IP20
Dimensions 113 x 45 x 124 mm
Length 113mm
Width 45mm
Depth 124mm
Temporarily out of stock - back order for despatch 08-10-2020, delivery within 2 working days
Unit of sale: Each
(exc. VAT)
(inc. VAT)
Per unit
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