Coupling Relay. 2-channel. Ident. no.: 7580620. The inputs are not polarized. With input E1 and input E2, the associated output switches separately. NE load connection: SIL 3 Safety Function for NE (Normally Energized) load (de-energized in safe state) is available. ND load connection: SIL 3 Safety Function for ND (Normally De-Energized) load (energized in safe state) is available. The device is available in a two-channel design for SIL 2 applications. Complete galvanic isolation. Input reverse-polarity protected. Removable screw terminals. ATEX, IECEx, NEPSI, cUL, cFM, INMETRO, Kosha. Use in Zone 2. SIL 3