Relpol rm45n series 5a miniature relays pcb relpol rm45n 3021 85 s012 this 5a 12v dc relay from the rm45n range of pcb mounting miniature relays has a sensitive coil and spst no contact configuration its small dimensions and light weight make it ideal for applications such as domestic equipment automation systems electrical equipment instrumentation and metering telecommunications devices remote control facilities light controllers etc relpol rm45n 3021 85 s012 spst no miniature rela