SIRIUS safety relay with relay enabling circuits (EC) 24 V AC/DC, 22.5 mm Spring-type terminal EC instantaneous: 4 NO EC delayed: 0 MK for retraction: 1 Expansion unit Maximum achieved SIL / PL: as basic unit
Product Type: Industrial Automation Component
General
| Article number |
3TK2830-2CB30 |
| product brand name |
SIRIUS |
| product designation |
safety relays |
| design of the product |
extension unit |
| product type designation |
3TK28 |
product function
| ● automatic start |
No |
| ● light barrier monitoring |
No |
| ● standstill monitoring |
No |
| ● protective door monitoring |
No |
| ● magnetically operated switch monitoring NC-NO |
No |
| ● magnetically operated switch monitoring NC-NC |
No |
| ● rotation speed monitoring |
No |
| ● laser scanner monitoring |
No |
| ● light array monitoring |
No |
| ● EMERGENCY OFF function |
No |
| ● monitored start-up |
No |
| ● pressure-sensitive mat monitoring |
No |
| product feature cross-circuit-proof |
No |
| suitability for interaction press control |
No |
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 |
General technical data
| certificate of suitability UL approval |
Yes |
| insulation voltage rated value |
300 V |
| surge voltage resistance rated value |
4 000 V |
protection class IP
| ● of the enclosure |
IP40 |
| ● of the terminal |
IP20 |
| shock resistance |
8 g / 10 ms |
| vibration resistance according to IEC 60068-2-6 |
5 ... 500 Hz: 0,075 mm |
| operating frequency maximum |
1 000 1/h |
| electrical endurance (operating cycles) typical |
100 000 |
| Substance Prohibitance (day/month/year) |
05/01/2012 |
| SVHC substance name |
Lead monoxide (lead oxide) CAS-No. 1317-36-8 |
| Net Weight |
0.233 kg |
Ambient conditions
| installation altitude at height above sea level maximum |
2 000 m |
ambient temperature
| ● during operation |
-25 ... +60 °C |
| ● during storage |
-40 ... +80 °C |
| relative humidity during operation |
10 ... 95 % |
| air pressure according to SN 31205 |
90 ... 106 kPa |
Electromagnetic compatibility
| installation environment regarding EMC |
This product is suitable for Class A environments only. In household environments, this device can cause unwanted radio interference. The user is required to implement appropriate measures in this case. |
| EMC emitted interference |
EN 60947-5-1 |
Safety related data
| product function suitable for safety function |
Yes |
| stop category according to IEC 60204-1 |
0 |
IEC 62061
| SIL Claim Limit (subsystem) according to EN 62061 |
3 |
| PFHD with high demand rate according to IEC 62061 |
1.2E-9 1/h |
ISO 13849
| category according to EN ISO 13849-1 |
4 |
Safety Integrity Level (SIL)
| ● according to IEC 61508 |
3 |
| safety device type according to IEC 61508-2 |
Type A |
| hardware fault tolerance according to IEC 61508 |
1 |
| T1 value for proof test interval or service life according to IEC 61508 |
20 a |
Electrical Safety
| touch protection against electrical shock |
finger-safe |
design of input
| ● cascading input/functional switching |
No |
| ● feedback input |
Yes |
| ● start input |
No |
● as NC contact
| — for signaling function instantaneous contact |
0 |
● as NO contact
| — safety-related instantaneous contact |
4 |
| — safety-related delayed switching |
0 |
| mechanical service life (operating cycles) typical |
10 000 000 |
| thermal current of the switching element with contacts maximum |
5 A |
● for signaling function
| — delayed switching |
0 |
| — instantaneous contact |
0 |
● safety-related
| — delayed switching |
0 |
| — instantaneous contact |
0 |
switching capacity current of the NO contacts of the relay outputs at DC-13
| ● at 24 V |
5 A |
| ● at 115 V |
0.2 A |
| ● at 230 V |
0.1 A |
switching capacity current of the NO contacts of the relay outputs at AC-15
| ● at 115 V |
5 A |
| ● at 230 V |
5 A |
switching capacity current of the NC contacts of the relay outputs at DC-13
| ● at 24 V |
5 A |
| ● at 115 V |
0.2 A |
| ● at 230 V |
0.1 A |
switching capacity current of the NC contacts of the relay outputs at AC-15
| ● at 115 V |
5 A |
| ● at 230 V |
5 A |
| wire length between sensor and electronics evaluation device with Cu 1.5 mm² and 150 nF/km maximum |
1 000 m |
make time with automatic start
| ● at DC maximum |
30 ms |
| ● at AC maximum |
30 ms |
make time with automatic start after power failure
backslide delay time in the event of power failure
| ● maximum |
25 ms |
| recovery time after power failure typical |
50 ms |
Control circuit/ Control
| type of voltage of the control supply voltage |
AC/DC |
control supply voltage 1 at AC
| ● at 50 Hz rated value |
24 V |
| ● at 60 Hz rated value |
24 V |
control supply voltage frequency
| ● 1 rated value |
50 Hz |
| ● 2 rated value |
60 Hz |
| control supply voltage 1 at DC rated value |
24 V |
operating range factor control supply voltage rated value of magnet coil at DC
| ● initial value |
0.85 |
| ● full-scale value |
1.2 |
operating range factor control supply voltage rated value of magnet coil at AC
| ● at 50 Hz |
0.85 ... 1.1 |
| ● at 60 Hz |
0.85 ... 1.1 |
Installation/ mounting/ dimensions
| mounting position |
any |
| fastening method |
screw and snap-on mounting |
| height |
120 mm |
| width |
22.5 mm |
| depth |
120 mm |
Connections/ Terminals
| type of electrical connection |
spring-loaded terminals |
type of connectable conductor cross-sections
| ● solid |
2x (0.25 ... 1.5 mm²) |
| ● finely stranded with core end processing |
2 x (0.25 ... 1.5 mm²) |
| ● finely stranded without core end processing |
2x (0.25 ... 1.5 mm²) |
| ● for AWG cables solid |
2x (24 ... 16) |
| ● for AWG cables stranded |
2x (24 ... 16) |
connectable conductor cross-section
| ● solid |
0.25 ... 1.5 mm² |
| ● finely stranded with core end processing |
0.25 ... 1.5 mm² |
| ● finely stranded without core end processing |
0.25 ... 1.5 mm² |
AWG number as coded connectable conductor cross section
| ● solid |
24 ... 16 |
| ● stranded |
24 ... 16 |
| DC resistance of the cable maximum |
30 Ω |
| type of electrical connection plug-in socket |
Yes |
Environment
| Environmental Confirmations |
Yes |
General Product Approval
| CCC |
Yes |
| UL |
Yes |
| EAC |
Yes |
| RCM |
Yes |
Functional Saftey
| Type Examination Certificate |
Yes |
Test Certificates
| Special Test Certificate |
Yes |
other
| Confirmation |
Yes |
| Chinese Quality Checkmark |
Yes |
Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, EPLAN macros, ...)
https://www.automation.siemens.com/bilddb/cax_de.aspx?mlfb=3TK2830-2CB30&lang=en
| last modified: |
7/31/2026 |
| Date8/1/2026 |
Subject to change without notice© Copyright Siemens 2026 |
Applications
This Industrial Automation Component is designed for industrial automation applications, offering reliable performance and compatibility with Siemens automation systems. Suitable for manufacturing, process control, and building automation environments.
