Siemens Output relay coupler, 1 c/o, 24VAC/DC, 1AProduct Overview Output coupler with plug in relay featuring 1 change over contact and screw terminal connections. Operates with 24 V AC DC control supply voltage in an ultra narrow 6. 2 mm enclosure width design, ideal for space critical applications. Key Features The 3TX7 series interface relays are designed for narrow applications where space conservation is paramount. This output coupler provides reliable galvanic isolation between control and