Sirius 3TK28 2P Safety Relays, 230 V ac, 10 A, 600 V ac

  • RS stock no. 766-1918
  • Mfr. Part No. 3TK2851-1AL20
  • Manufacturer Siemens
Technical data sheets
Legislation and Compliance
COO (Country of Origin): DE
Product Details

SIRIUS 3TK28 5 Safety Relays with contactor relay enabling circuits

The SIRIUS 3TK28 5 safety relay combines solid-state safety functionality and two redundant contacting auxiliary contactors. These safety relays/contactors are supplied ready assembled, wired, tested and certified as a single unit. Available with spring-loaded or screw terminals.

Enabling circuits, floating
AC-15/DC-13 switching capacity
Protective separation
Autostart / monitored start
Screw and snap-on installation mounting possible
Long mechanical and electrical endurance
Certified as a complete unit
Fault minimization and cost reduction through factory wiring
Low installation costs


3TK28 56 and 3TK28 57 safety expansion modules are available for increasing the number of enabling circuits.


EN 60204-1, EN ISO 12100, EN 954-1, IEC 61508.



Safety Contactor

Attribute Value
Pole and Throw Configuration 2P
Series 3TK28
Normal State Configuration 2NO/NC
Contact Current Rating 10 A
Contact Voltage Rating 600 V ac
Coil Voltage 230 V ac
Terminal Type Screw
Length 132mm
Width 90mm
Depth 108mm
Minimum Operating Temperature -25°C
Maximum Operating Temperature +60°C
Dimensions 132 x 90 x 108 mm
Available to back order for despatch 2020/12/01. Please allow 4 to 6 working days for delivery to South Africa
Price (Excl VAT) Each
R 4,060.00
(exc. VAT)
R 4,669.00
(inc. VAT)
Per unit
1 +
R 4,060.00
Not Available for premium delivery