The 3TH43 contactor relays are suitable for use in any climate. They are finger-safe according to IEC 60529. In terms of their terminal designations, identification numbers and identification letters, the 3TH43 contactor relays conform to the standard EN 50011 for Specific Contactor Relays. The 3TH43 contactor relays can be equipped with RC elements, varistors, diodes or diode assemblies (combination of a diode and a Zener diode) for damping opening surges. The surge suppressors can be mounted directly on the coil.