SCHRACK Power PCB Relay RT1, Power Relay, Standard, Monostable, DC, 400 - 500mW Coil Power Rating Class, 403mW Coil Power Rating DC . SCHRACK Power PCB Relay RT1, Power Relay, Standard, Monostable, DC, 400 - 500mW Coil Power Rating Class, 403mW Coil Power Rating DC