The SD range of devices protects electronic circuits from high voltage transients and temporary overloads on signal and power lines. This is achieved by diverting the transient current to earth and limiting the signal line voltage for the duration of the surge. Earthing is provided simply by clipping the SD unit to an earthed DIN rail. Screw terminals are provided to connect cable screens to earth.
Voltage breakdown ratings:
9-10Vdc | SDRTD, SD07, SD07X, SD07R, SD07R3, SD07T3, SD0RX3 |
21-23Vdc | SD16, SD16X, SD16R, SD16R3, SD16T3, SD16X3 |
45-47Vdc | SD32, SD32X, SD32R, SD32R3, SD32T3, SD32X3 |
65-80Vdc | SD55, SD55X, SD55R, SD55R3, SD55T3, SD55X3 |