The D300M series toroidal current transducers are designed to be combined with DER3 differential relays.
The D300M is used in those applications where it is necessary to set a trip current IΔn > 30A. It introduces a multiplication factor x10 which brings the IΔn calibration range from 0.030A/30A to 0.30A/300A.
The transducers must be installed upstream of the line or loads to be protected and monitored. All the active conductors (phase and neutral) of the single-phase or three-phase lines must pass inside.
Dossena uses a special magnetic alloy for its toroidal transducers, in doing so, the ferromagnetic core is able to guarantee broad magnetic qualities and detect even very low fault current values.
Each Dossena transducer is tested and tested individually through a highly selective computerized system that fully evaluates the quality (total compliance with the technical characteristics) and safety of the product.
Advantages of purchasing:
Wide range capable of satisfying every need.
Core in special ferromagnetic alloy very sensitive to currents dispersed towards earth.
Housing in self-extinguishing CL VO plastic material.
Withstand short circuit current 80KA for 0.5 seconds
IP30 protection degree (IP20 connections), wide operating range from -10°C to +50°C.
Two windings: one test and one measurement.
Easy installation. Mounting on panel bottom and/or on Din rail
Tested and tested individually guaranteeing the high quality of the product.