{"product_id":"schmersal-t3z-068-22yr-emergency-cable-pull-switch","title":"Schmersal T3Z 068-22YR Emergency Cable Pull Switch","description":"\u003cp\u003eThe \u003cstrong\u003eSchmersal T3Z 068-22YR\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eT3Z 068-22YR\u003c\/strong\u003e EMERGENCY CABLE PULL SWITCH, operates as a dedicated hardware component for emergency-stop signaling, conveyor perimeter guarding, and trip-wire safety circuit interruption within machinery safety networks.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eT3Z 068-22YR (T3Z06822YR)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSchmersal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eGermany\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e10.00 lbs (Approx. 4.54 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eHeavy-duty industrial cast iron or aluminum alloy enclosure layout\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eCalibrated for standard industrial and outdoor processing environments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActuation Type\u003c\/td\u003e\n\u003ctd\u003eBi-directional cable pull execution\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReset Mechanism\u003c\/td\u003e\n\u003ctd\u003eIntegrated lockable keyed reset switch (Part index: 103007608)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Arrangement\u003c\/td\u003e\n\u003ctd\u003e2 NO \/ 2 NC synchronized positive-break safety contacts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eEmergency Cable Pull Switch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLifecycle Status\u003c\/td\u003e\n\u003ctd\u003eDiscontinued by manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eHigh-Reliability Safety Control Integration\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSIL3 Certification Framework:\u003c\/strong\u003e The positive-break contact elements are structurally decoupled and forced apart mechanically upon pull-wire displacement or cable slack detection. This physical configuration prevents contact welding and supports system integration up to SIL3 certification levels when evaluated within a dual-channel safety relay architecture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTriple Modular Redundancy (TMR) 2oo3 Architecture Mapping:\u003c\/strong\u003e The separate NC safety contact loops feed isolated binary input paths. These dry-contact loops link directly to distributed safety I\/O modules, routing independent status signals to a triple modular redundancy (TMR) 2oo3 architecture voting matrix to prevent false trips while maintaining fault-tolerant execution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGalvanic Isolation Safety Boundaries:\u003c\/strong\u003e Internal contact blocks maintain complete galvanic isolation between the low-voltage sensor monitoring channels and local machine control loops. This barrier blocks inductive voltage spikes generated along long outdoor wire runs from damaging upstream safety PLC processors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFail-Safe State Execution:\u003c\/strong\u003e The internal spring mechanism monitors both cable tension and cable breakage. If the wire is pulled, cut, or goes slack, the switch instantly drops into a fail-safe state execution mode, snapping the NC contacts open and locking the mechanical assembly until authorized personnel clear the perimeter and actuate the key reset.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What specific network tracking behavior manifests if the structural pull cable snaps due to mechanical fatigue?\u003c\/p\u003e\n\u003cp\u003eA: The internal counter-spring balances drop instantly, causing the internal positive-break mechanism to force the NC safety contacts open. The system registers this as an emergency stop condition, and the status cannot be cleared electronically until a new cable is tensioned and the physical key switch is turned.\u003c\/p\u003e\n\u003cp\u003eQ: Can this 10.00 lbs heavy-duty safety switch be opened or reset while the master automation system is running?\u003c\/p\u003e\n\u003cp\u003eA: No. Resetting the device while the safety loop is active violates standard plant lock-out procedures. The physical key reset must only be turned after verifying that the conveyor line is clear of obstructions and that all emergency variables have been brought to a verified zero-energy state.\u003c\/p\u003e","brand":"Schmersal","offers":[{"title":"Default Title","offer_id":45136067035251,"sku":"T3Z 068-22YR","price":410.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/screenshot_2026-06-26_15-09-46_7477ce98-d8dc-498b-9092-c22e30e1788e.png?v=1782460422","url":"https:\/\/www.dcssupplier.com\/ar\/products\/schmersal-t3z-068-22yr-emergency-cable-pull-switch","provider":"DcsSupplier Limited","version":"1.0","type":"link"}