{"product_id":"siemens-3tk2840-1bb40-relay","title":"Siemens 3TK2840-1BB40 Relay","description":"\u003cdiv\u003e\u003cp\u003eSiemens 3TK2840-1BB40 is a SIRIUS safety relay with an electronic release circuit (RC) designed for 24 V DC control networks, in a compact 22.5 mm-wide brick that mounts on a DIN rail and uses screw-terminal connections. This single-channel device provides two safety contacts for monitoring safety switches and interlocks, with an instantaneous RC release and no delayed-time option, and it supports autostart\/monitored start modes as a basic safety unit. It is rated for performance up to SIL 2 and PL d, offering robust fail-safe behavior in industrial safety circuits, and is specified for operation from -25 to +60 °C (storage -40 to +80 °C) with a maximum installation altitude of 2,000 m. Housing protection is IP40 and terminal protection is IP20, aligning with typical industrial enclosure requirements. Applications include safety gate interlocks, emergency-stop circuits, and other safety-controller configurations where reliable, dual-contact monitoring and a compact form factor are essential. \u003c\/p\u003e\u003c\/div\u003e","brand":"SIEMENS","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":46268174598378,"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-3tk2840-1bb40-relay","provider":"GTG Hardware","version":"1.0","type":"link"}