Manufacturer: SIEMENS
Type: Safety Relay
Model: 3TK28281BB40

Brand Name: SIRIUS
Rated Thermal Current Max.: 5 A 
Rated Insulation Voltage (Ui): 300 V
Rated Impulse Voltage (Uimp): 4 kV 
Time Delay: 0.5 … 30 s
Channels No.: 2 Channel
Contact: 4 Normally (NO) + 1 Normally Closed (NC)
Protection Class: IP20
Temperature: -25 … 60 °C
Dimensions: 44.8 x 138.5 x 120 mm