Basler Electric BE3-27-1B1N2 is a single-phase undervoltage protective relay in Basler’s BE3 family, designed to monitor line voltage and trip a connected circuit when voltage falls below a preset threshold. This variant is specified for 240 VAC input at 50/60 Hz, suitable for voltage-monitoring protection schemes. Basler lists the BE3-27 as discontinued and directs users to the ES-27 as a newer alternative. Retail listings confirm the BE3-27-1B1N2 designation and its 240 VAC undervoltage operation.
