RG series devices are available for control using dc inputs between 4-32VDC, while ac controlled types operate with voltage ranges of 20-275Vac and 20-190Vdc. Switching is selectable between zero-cross or instant-on methods.
Voltage transient protection is provided as standard across outputs using a resistor and capacitor network combined with metal oxide varistors; transient suppressor diodes may be specified where these are more suitable than varistors. There is also protection against control voltage transients, using metal oxide varistors in the case of ac controlled types. DC controlled devices are polarity protected up to 32V.