Why do I need a SIL-certified coupling relay?
Phoenix Contact has force-guided coupling relays (link to category) and safe force-guided coupling relays in its portfolio. Forced guidance prevents N/O and N/C contacts from closing at the same time by mechanical means. This technology therefore provides the highest level of functional safety.
The safe coupling relays are SIL-certified as well. SIL, or safety integrity level, is a method for assessing a system’s reliability. Levels SIL 1, SIL 2, and SIL 3 must always be viewed in relation to the hazard.
If you choose our SIL-certified coupling relay, you will not need to conduct an assessment. The SIL coupling relays have been tested and certified by an independent institute. All safety-related characteristics are therefore available. You can also carry out comprehensive diagnostics with an integrated test pulse filter.