3-phase, door-mounted metering- and metering data boards for surface and flush mounting. Space reservation for ESL3.SLY1- or SLY1.3.-package (except EHNV355.18). We have added residual current circuit breakers (RCCB) and refined the circuit breakers (MCB) placements to meet the future requirements. There are clear and spacious wiring paths, enough reserve space and easy-to-connect spring-loaded N and PE connectors. Separate databoxes EST3.700/IT, EST3.700/RJ and EST700/IT available.