DescriptionRMM series with 8 C/O type contacts are trip relays with high reliability providing top performance, suitable for applications in particularly harsh and unsettled environments, such as high voltage electricity distribution stations and medium voltage substations:
The typical applications are:
- for interfaces between protections or automation systems and HV / MV breakers, for alarm transmission and very rapid trip operations
- multiplication of trip contacts in minimal time intervals
Switching times <8ms.
“High burden” (HB) configuration provides immunity to capacitance discharge currents & power to the coil, in order to avoid relay operations in case of transients coming from extensive wiring, for example.
The contacts are designed to obtain remarkable performances both for high, inductive loads or very low loads. Each contact is able to switch from 10mA – 10V even without contact gilding.
Knurled surface ensures an excellent self-cleaning effect, a lower ohmic resistance thanks to the various points of electrical contact, and will also improve the electrical life of the component.
The typical application sectors are among the most demanding, such as electricity generating stations, electrical transformer stations, fixed equipment for railways, or industries using continuous production processes (chemical and petrochemical, rolling mills, cement works, etc.)