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Siemens 3TK28 Safety Relay 3TK2802-0DB4 DC 24V | eBay
Siemens Siguard 3tk28 run test, you can run 1 or 3 phase motor in this safety device, - YouTube
2 Pole Siemens 3TK28 Series Single-Channel 3TK2821-1CB30 SIRIUS safety relay at Rs 8000 in Bengaluru
3TK2826-1BB41 | Relais de sécurité Siemens 3TK28, 24V c.c., 1, 2 canaux, 4 contacts de sécurité | RS
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