The 3RH2131-1FB40-ZX95: Pollution degree 3 rated, so it handles conductive dust environments typical in industrial panels.
DC switching capacity across voltages
The built-in diode surge suppressor (across the coil) handles the DC coil's 4 W closing and holding power, protecting nearby PLC outputs from voltage spikes.
Relative humidity minimum 10 %. RoHS compliance effective 2009-10-01 per substance prohibitance date. Surge voltage resistance rated at 6 kV — suitable for IEC 60947-1 coordination.
