Overload protection switching system for electrical lines and components has thermal trips

摘要

The electrical circuit breaker has a main supply path (1) in which there is a magnet (3) controlling a switch (4) that opens when a temperature sensor (4). A second or bypass path has a breaker switch (8) coupled to a resistor (6) and a second thermal trigger (6). A third breaker unit has a pair of switches (11,12) in the neutral line (9).