Circuit breaker ВА88-43 3P 1000A 50kA with electronic trip unit МР 211 IEK

ВА88 circuit breakers carry current normally and disconnect short circuits, overloads and unacceptable voltage drops, and provide operational circuit switching. Rated operating voltage up to 400 V; rated currents 12.5–1,600 A. Comply with ГОСТ Р 50030.2. Electronic overcurrent trip units provide reliable, accurate protection independent of ambient conditions. No separate power supply is required; protection operates at loads of at least 15% of rated current even with voltage on only one phase. The protection unit contains three current transformers, an electronic module and a trip electromagnet acting directly on the breaker mechanism. The transformers power the electronics and generate protection signals. Users select trip settings using front-panel DIP switches according to the diagram. The МР211's wide adjustment range suits distribution networks requiring reliable, accurate tripping.