777086 Pilz E-Stop, PNOZ X Series. PNOZ X safety relays are proven through their reliability and robustness. You’ll find them used over a wide area in the most diverse safety applications. Use one PNOZ X per safety function. Technical features are based on voltage‑free, electromechanical contacts in 2 relay technology. Sizes vary from 22.5 to 90 mm, the number of contacts from two to eight.