HA(QA)、HP(QP)系列隔离开关主要用于有高短路电（diàn）流的配（pèi）电  电路（lù）和电动机电路中，作（zuò）为（wéi）手（shǒu）动不频繁操作的开关、隔离开关和应急开关，并作电路保护之用。开关可直接开闭电动机等高电感负载（zǎi），特别适用于（yú）抽屉式开关柜的成（chéng）套装置中。

本系列隔（gé）离开关由刀型静触头、滚动动触头及灭弧（hú）装置组成的接触（chù）系统  均组装在由耐弧工程塑料制成的封（fēng）闭底座内，能达到零飞弧。操作机构由具有  弹簧储（chǔ）能的连杆传动机构（gòu）构成（chéng），靠（kào）弹簧力完成开关的（de）分、合，使开关动（dòng）作无关  人（rén）力操作。手柄由操作（zuò）手柄和（hé）传动轴等构成，属（shǔ）旋转操作方式。当手柄旋转操（cāo）  作（zuò）时,使操作机构弹簧储能，靠储能的弹（dàn）簧力释放带动动触头与静触头形成  合、分两种状态，从而达到开关分、合主电路的目的（de）。

本开（kāi）关的上（shàng）部可装一个或二个辅助开关，每个（gè）辅助开关有一对电器上分  开的常（cháng）开触头和常闭触头，能使控制回（huí）路明确指示（shì）开（kāi）关主电路的通断（duàn）情况。

Series HA(QA)、 HP(QP) switch-disconnector are mainly applied in the  distribution circuits and motor circuits with high short-circuit currents as the  power switches. As the switch handle is in rotary operation, they are especially  suitable for installation and application in drawer type switch cabinets. Technical  performances confirm to standards IEC60947.3 and GB14048.3.This series  switches are of closed structure design. The contact system is composed of  static knife contacts, moving rolling contacts and arc quenching sets that are all  fitted in the sealed case made of arc resistant engineering plastic and zero arc  flash out is achieved. The switching mach-anism is of reliable spring energy  stored independent manual operation style.On the upper part of the. switch  utmost two auxiliary switches may be quipped in, each having a set of electrical  separated normal open and normal closed contacts.