REF601CE446BB1 | ABB Feeder Protection and Control Relay

Description

The REF601CE446BB1 is an ABB feeder protection and control relay belonging to the Relion® 605 series, a product line designed for medium and low voltage power system protection and substation automation. Integrating protection, monitoring, and control functions in a compact, modular structure, it supports feeder automation applications, including normal operation monitoring, measurement optimization, and fault detection, isolation, and power restoration. Key functional features include built-in circuit breaker control and support for up to 4 automatic reclosure cycles, enhancing power supply reliability. Technically, it is equipped with 4 accurate current inputs, a user-selectable rated frequency of 50/60Hz, 3 normally open power output contacts, and 2 change-over signal output contacts, with an optional I/O module adding 3 extra change-over signal output contacts. Additional core features include battery charge supervision, continuous self-supervision of electronics and software, and a detachable plug-in unit for flexible configuration and maintenance, making it suitable for both new installations and retrofitting projects.