S5 series

The S5 series of hold open fire-door electromagnets have a holding force of 150 kg and are available with IP00 or IP65 protection grade (resin incorporated coil) or IP67 (resin incorporated coil and magnetic coupling surface treated for critical environments such as passenger ships). With galvanized steel base, without release button, they include a protection circuit (diode in series to polarize the coil and energy recovery* counter-diode) and are supplied with a fixed cushioned counterplate in steel.