![Siemens 3TK28 34-2AB20 Safety Relay Press Control Unit, Two Hand Control Unit, Spring Loaded Terminals, 2 NO Enabling Contacts, 24VAC Rated Voltage, 45mm Width: Electronic Relays: Amazon.com: Industrial & Scientific Siemens 3TK28 34-2AB20 Safety Relay Press Control Unit, Two Hand Control Unit, Spring Loaded Terminals, 2 NO Enabling Contacts, 24VAC Rated Voltage, 45mm Width: Electronic Relays: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/81wYQCGBI9L.jpg)
Siemens 3TK28 34-2AB20 Safety Relay Press Control Unit, Two Hand Control Unit, Spring Loaded Terminals, 2 NO Enabling Contacts, 24VAC Rated Voltage, 45mm Width: Electronic Relays: Amazon.com: Industrial & Scientific
![Siemens 3TK28 30-2CB30 Safety Relay Expansion Unit, Spring Loaded Terminals, 4 NO Enabling Contacts, 24VAC/VDC Rated Voltage, 22.5mm Width: Electronic Relays: Amazon.com: Industrial & Scientific Siemens 3TK28 30-2CB30 Safety Relay Expansion Unit, Spring Loaded Terminals, 4 NO Enabling Contacts, 24VAC/VDC Rated Voltage, 22.5mm Width: Electronic Relays: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/71gLXDF8rrL.jpg)
Siemens 3TK28 30-2CB30 Safety Relay Expansion Unit, Spring Loaded Terminals, 4 NO Enabling Contacts, 24VAC/VDC Rated Voltage, 22.5mm Width: Electronic Relays: Amazon.com: Industrial & Scientific
3TK2825-1AB20 | Siemens 3TK28 Series Dual-Channel Safety Switch/Interlock Safety Relay, 24V ac, 3 Safety Contact(s) | RS
![Siemens - 3TK28281BB40 - Sirius 3TK28 Safety Relay, Single Channel, 24 V dc, 2 Safety, 1 Auxiliary - RS Siemens - 3TK28281BB40 - Sirius 3TK28 Safety Relay, Single Channel, 24 V dc, 2 Safety, 1 Auxiliary - RS](https://assets.rs-online.com/f_auto,q_auto/70384406.jpg)
Siemens - 3TK28281BB40 - Sirius 3TK28 Safety Relay, Single Channel, 24 V dc, 2 Safety, 1 Auxiliary - RS
3TK2827-1BB40 | Siemens 3TK28 Series Single-Channel Speed/Standstill Monitoring Safety Relay, 24V dc, 2 Safety Contact(s) | RS
3TK2825-1BB40 | Siemens 3TK28 Series Dual-Channel Safety Switch/Interlock Safety Relay, 24V dc, 3 Safety Contact(s) | RS
![Siemens 3TK28 28-1AL20 Safety Relay, For Emergency Stop and Protective Doors, Auto Start, Screw Terminals, 45mm Width, 2 NO + 2 NO Enabling Contacts, 1 NC Signal Contacts 45mm Width, 2 NO + Siemens 3TK28 28-1AL20 Safety Relay, For Emergency Stop and Protective Doors, Auto Start, Screw Terminals, 45mm Width, 2 NO + 2 NO Enabling Contacts, 1 NC Signal Contacts 45mm Width, 2 NO +](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/51D5QWRJDjL.jpg)
Siemens 3TK28 28-1AL20 Safety Relay, For Emergency Stop and Protective Doors, Auto Start, Screw Terminals, 45mm Width, 2 NO + 2 NO Enabling Contacts, 1 NC Signal Contacts 45mm Width, 2 NO +
![Siemens 3TK28 25-1BB40 Safety Relay, For Emergency Stop and Protective Doors, Autostart/monitored Start, Screw Terminals, 45mm Width, 3 NO Enabling Contacts, 2 NC Signal Contacts 45mm Width, 3 NO Enabling Contacts, 2 Siemens 3TK28 25-1BB40 Safety Relay, For Emergency Stop and Protective Doors, Autostart/monitored Start, Screw Terminals, 45mm Width, 3 NO Enabling Contacts, 2 NC Signal Contacts 45mm Width, 3 NO Enabling Contacts, 2](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/91KoiKcZqrL.jpg)