Phoenix contact offers universal plc standard series with pdt relay. The plc r 21 is a relay series, which can be used universally and includes base terminal blocks and plugable miniature relays with pdt contact. Functional plug in bridges decrease the amount of cabling required considerably and limit the risks of faulty wiring. The modules are designed with screw connections and spring cage connection with exactly the same shape. The universal pdt series, plc r...21, is used whenever an application demands great flexibility. It is usable as an input or output interface or in n/c, n/o or pdt functions and can thus reduce storage costs considerably. In the standard version, the plc relays are offered equipped with relay or miniature solid state relay. These can also be combined individually. Input voltages are ranging from 12 v to 230 v: the versions with input voltages from 12v up to 230 v meet the demands of every industrial application. An input circuit, including a status display, damping function and polarity reversal protection function is already integrated in the module. Robust miniature relay: plc relay is equipped with a robust miniature relay including features like operational safety with ip67 protected mechanics; environmentally friendly, cadmium fee contact material; as an alternative with a gold plated contacts for small switching capacities; reliable isolation according to din vde 0106 101 and 4 kvrms potential isolation between coil and contact. The relay is securely fastened through an engagement lever. Should it become worn, it can be disengaged, and - without disconnecting the wiring can be replaced quickly and economically.
