What does the suffix 1, 6 or 7 call out in PEWA - Panasonic Electric Works part numbers like TXD2SA-3V-6
This suffix, or lack thereof, calls out the contact material/Surge breakdown voltage (between contact and coil).
TXD2SA-3V Standard contact (Ag+Au clad) 2,500V
TXD2SA-3V-1 AgPd contact (low level load) AgPd+Au clad (stationary) 2,500V
TXD2SA-3V-6 Standard contact (Ag+Au clad) 6,000V
TXD2SA-3V-7 AgPd contact (low level load) AgPd+Au clad (stationary) 6,000V