Overview
The REL21701 is a Schneider MiCOM P127 voltage/current protection relay rated for 1 A nominal current on a 250 V DC supply, with 4 current transformer inputs (X/5 A and X/1 A), 3 voltage transformer inputs, and 12 discrete inputs plus 9 discrete outputs. It supports DNP3, IEC 60870-5-103, and Modbus RTU protocols, and is flush-mounted in a 103.0 mm wide case with a total depth of 270 mm (embedded depth 240 mm).
Lifecycle and sourcing
Schneider discontinued the REL21701 on 2020-08-27; it is no longer in active production and must be sourced through surplus or broker channels.