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The Sirius 3RQ1 series completes Siemens Smart Infrastructure’s portfolio of coupling relays for electrical systems in industry and infrastructure. With wide-range supply voltage from 24 to 240V AC/DC, the new force-guided devices are designed for universal use. They are certified up to Safety Integrity Level (SIL) 3 and Performance Level (PL) e and approved for very high safety requirements. Among other things, coupling relays are used to amplify or multiply signals to and from control Read more...