Phoenix Contact 2964131 The relay terminal block features soldered-in miniature relays with silver-nickel contacts, suitable for small to medium-sized loads, including a single Normally Open (N/O) contact. The unit operates within an input voltage range of 24 V AC/DC and includes integrated manual, zero, and automatic switch settings, designed for assembly on the NS 35/7.5 terminal with a width of 6.2 mm.