A3RM - THREE PHASE STEP-TRANSFORMER FOR SPEED CONTROLLER
Autotransformer regulators (two transformers in V-connection) serve the purpose of airflow control, fitted in ventilation and heating systems. The transformers are made with Class I insulation and protection grade IP00 (for IP21 protection, please find out more about A3RW type). Maximum ambient temperature 40°C, thermal class of insulation B (130°C). Manufactured in compliance with EN 61558-2-13.