8501X NEMA machine tool relays combine a rugged heavy duty design with modular construction for greater flexibility. They are ideal for applications where long life, high reliability and ease of maintenance are important. This relay is ideal for utility plant applications where reliable performance and a pure DC power plant are required. In addition to the 8501XDO relay features, this relay can have up to 12 NO or NC contacts. This relay has contacts with a 5 ampere resistive current rating at 600 VDC. The contacts also have an A600 and P600 inductive contact rating. This relay is supplied with four 8501XC1 contact cartridges. The contact cartridges are installed as normally open contacts. The machine tool relays have straight through wiring. This makes wiring easier. The four plug in contact cartridges in this relay make contact conversion or replacement very easy. Contact conversion or replacement can be done without removing any wiring. Contacts are supplied with pressure wire connectors so wires can be easily terminated. !8 to 12 AWG copper wire can be used with this relay. Relay has a 125 VDC replaceable coil. This coil is capable of handling 140 VDC continuously. Relay is UL listed and CSA certified.