公开(公告)号：EP2472548A1

公开(公告)日：2012-07-04

申请号：EP11194746.1

申请日：2011-12-21

申请人： General Electric Company

发明人： Mooney, Brian Frederick ,  Papallo, Thomas Frederick ,  Kumpfer, Brent Charles

IPC分类号： H01H71/14

CPC分类号： H01H71/145

摘要： A thermal trip unit for a circuit breaker having a primary conductive path for conducting a load current is provided. The thermal trip unit comprises a shape memory alloy (SMA) member adapted to change from a first shape to a second shape at a predetermined thermal condition, a holding member coupled electrically in series with the circuit breaker primary conductive path, said holding member arranged to operatively support said SMA member, wherein said SMA member is configured and disposed within the circuit breaker to trigger a trip response of the circuit breaker at said predetermined thermal condition.

摘要翻译： 提供一种用于具有用于传导负载电流的初级导电路径的断路器的热跳闸单元。 热脱扣单元包括形状记忆合金（SMA）构件，其适于在预定的热状态下从第一形状改变为第二形状;保持构件，其与断路器主导电路径串联电连接，所述保持构件布置成 可操作地支撑所述SMA构件，其中所述SMA构件被配置和设置在所述断路器内以触发所述断路器在所述预定热条件下的跳闸响应。