MCB Accessories Circuit Breaker AccessoriesFunction Auxiliary Contact: Indicate the status of making or breaking of MCBs. Shunt Release: Control the MCBs from long distance. Auxiliary Alarm: Indicate the status of making or breaking of MCBs. Under or Over Voltage Release: Make the MCBs trip when voltage is over or under the rated voltageTechnical Parameter Model typeEBS1B-OF, EBS1B-S2, EBS1B-SD, EBS1B-U2+O2StandardIEC62019Rated current2, 3, 6ARated frequency50/60HzEndurance4000 timesRated voltage AC(V)24, 48, 230, 400MCB AccessoriesEBS1B-OFAuxiliary ContactMCB AccessoriesEBS1B-S2Shunt ReleaseMCB AccessoriesEBS1B-SDAuxiliary AlarmFeatures ●Mounted on the left side of EBS1B MCBsApplicable Working and bus bar connectionAmbient temperature-5~+40℃, the average value cannot exceed to +35℃ within 24hAltitude≤2000 mRelative humidity≤95%Pollution levelII.Installation locationPlace free from erosion of rain and snow