Switch, in particular Circuit breaker for Low Voltage, and power supply for an electronic trip unit of a switch

摘要

switches, in particular circuit breaker for niederspannungen;the invention relates to a switch (1), in particular for niederspannungen circuit breaker with conductors (l1, l2, l3), with an electronic auslu00f6seeinheit (etu) which exceed a stromgrenzwerts, especially in a - and / or short-circuit current, the switch triggers a d the power supply (ps) includes transducers (3)with the electronic auslu00f6seeinheit (etu), the first winding (4) whose secondary side and the conductors (l1, l2, l3) of the first primary side is, the transducers (3) with time change current with electrical energy supplied.the supply of auslu00f6seeinheit (etu) with energy in operating modes to ensure that enough energy from the first winding (4), such as dc, small wechselstru00f6men, gepulstem dc etc.it is suggested that, in addition to the first winding, a second winding (4) and (5) of the transformer is arranged, the second primary side of the stromwandlers (3) isand that low energy converters (daw) in at least two heads of a voltage abgreift and the second winding (5) and the electronic auslu00f6seeinheit on the secondary winding 4 with electrical energy supplied.