{"product_id":"siemens-3tk2804-0bb4-thermal-overload-relay-module","title":"Siemens 3TK2804-0BB4 Thermal Overload Relay Module","description":"\u003cdiv\u003e\u003cp\u003eSiemens 3TK2804-0BB4 is a compact safety-relay module that consolidates contactor functionality for enabling and signaling safety circuits in industrial control systems. It is DC 24 V coil operated and provides a versatile contact configuration consisting of four normally open contacts (4NO) plus an additional NO\/NC pair (1NO+1NC), enabling signaling and interlock logic within a single assembly. Designed for integration with Siemens power modules, it works in conjunction with the 3SK1230 power module, with guidance in the related power-module documentation to ensure correct connection and use. This module is intended for safety-circuit applications such as emergency-stop signaling, interlocks, and other protective devices, helping to monitor and control safeguarding paths without requiring separate relays for each function. Engineers typically employ the 3TK2804-0BB4 to streamline safety wiring and reduce component count in control panels and compact machinery, delivering reliable state signaling and control for safeguarding logic in motor-protection and line-protection schemes. \u003c\/p\u003e\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"New Surplus No Box","offer_id":46268173975786,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0716\/8039\/3450\/files\/GTG-STOCK-017.png?v=1788727429","url":"https:\/\/gtghardware.com\/products\/siemens-3tk2804-0bb4-thermal-overload-relay-module","provider":"GTG Hardware","version":"1.0","type":"link"}