按钮开关是我们生活中比较常见的一类小电器，我们在生活工作中会接触到各种各样的按钮开关，如何选择适合自己需求的按钮开关就显得尤为重要了。按钮开关的结构种类很多，可分为普通揿钮式、蘑菇头式、自锁式、自复位式、旋柄式、带 指示灯 式、带灯符号式及钥匙式等，有单钮、双钮、三钮 复合式，有一对常闭触头和常开触头，有的产品可通过多个元件的串联增加触头对数。还有一种自持式按钮，按下后即可自动保持闭合位置，断电后才能打开。

　　Button switch is a common kind of small electrical appliances in our life, we will be exposed to a variety of button switches in our life and work, how to choose the button switch suitable for their own needs is particularly important.There are many types of button switch structure, which can be divided into ordinary button type, mushroom head type, self-locking type, self reset type, rotary handle type, indicator light type, light symbol type and key type. There are single button, double button, three button compound type, a pair of normally closed contacts and normally open contacts. Some products can increase the number of contacts through series connection of multiple components. There is also a self-contained button, which can automatically maintain the closed position after pressing, and can be opened after power failure.

　　按钮开关可以完成启动、停止、正反转、变速以及互锁等基本控制。通常每一个按钮开关有两对触点。每对触点由一个常开触点和一个常闭触点组成。当按下按钮，两对触点同时动作，常闭触点断开，常开触点闭合。

　　The button switch can complete the basic control of start, stop, forward and reverse, speed change and interlock. Usually each push-button switch has two pairs of contacts. Each pair of contacts consists of a normally open contact and a normally closed contact. When the button is pressed, two pairs of contacts act at the same time, the normally closed contact is opened and the normally open contact is closed.

　　按钮开关型号分类

　　Button switch model classification

　　按钮可按操作方式、防护方式分类，常见的按钮类别及特点：

　　Buttons can be classified according to operation mode and protection mode. Common types and features of buttons are as follows:

　　开启式：适用于嵌装固定在开关板、

　　Open type: suitable for mounting on the switch board

　　按钮开关控制柜或控制台的面板上。代号为K。

　　Push button switch on the panel of control cabinet or console. K is the code name.

　　保护式：带保护外壳，可以防止内部的按钮零件受机械损伤或人触及带电部分,代号为H。

　　Protective type: with protective shell, it can prevent the internal button parts from mechanical damage or people touching the live parts, code named H.

　　防水式：带密封的外壳，可防止雨水侵入。代号为S。

　　Waterproof type: with sealed shell, can prevent rain water invasion. The code name is s.

　　防腐式：能防止化工腐蚀性气体的侵入。代号为F。

　　Anticorrosive type: it can prevent chemical corrosive gas from invading. The code name is f.

　　防爆式：能用于含有爆炸性气体与尘埃的地方而不引起传爆，如煤矿等场所。代号为B。

　　Explosion proof type: can be used in places containing explosive gas and dust without causing explosion propagation, such as coal mines and other places. Code B.

　　旋钮式：用手把旋转操作触点，有通断两个位置，一般为面板安装式。代号为X。

　　Knob type: use the handle to rotate the operating contact, there are on-off two positions, generally panel mounted. The code name is X.

　　钥匙式：用钥匙插入旋转进行操作，可防止误操作或供专人操作。代号为Y。

　　Key type: the key is inserted and rotated for operation, which can prevent misoperation or be operated by special personnel. The code name is y.

　　紧急式：有红色大蘑菇钮头突出于外，

　　Emergency type: with big red mushroom button head protruding out,

　　自持按钮：按钮内装有自持用电磁机构，主要用于发电厂、变电站或试验设备中，操作人员互通信号及发出指令等，一般为面板操作。代号为Z。

　　Self holding button: the button is equipped with self holding electromagnetic mechanism, which is mainly used in power plant, substation or test equipment, and the operator exchanges signals and sends instructions, which is generally operated by panel. The code name is Z.

　　带灯按钮：按钮内装有信号灯，除用于发布操作命令外，兼作信号指示，多用于控制柜、控制台的面板上。代号为D。

　　Button with light: the button is equipped with signal lamp, which is used to issue operation command and signal indication. It is mostly used on the panel of control cabinet and console. Code D.

　　组合式：多个按钮组合。代号为E。

　　Combined type: multiple button combination. Code E.

　　联锁式：多个触点互相联锁。代号为C。

　　Interlocking type: multiple contacts are interlocked with each other. The code name is C.

　　按用途和结构分类：

　　Classification by use and structure:

　　1、常开按钮

　　Normally open button

　　2、常闭按钮

　　Normally closed button

　　3、复合按钮

　　Composite button

　　按钮开关型号含义和技术参数

　　Model meaning and technical parameters of button switch

　　型号 额定电压 /V 额定电流 /A 结构形式 触头对数(副) 按钮数 按钮颜色

　　Model rated voltage / V rated current / a structure contact pairs (auxiliary) button number button color

　　常开 常闭

　　Normally open normally closed

　　LA2

　　元件 1 1 1 黑、绿、红

　　Element 11 1 black, green, red

　　LAl0-2K

　　开启式 2 2 2 黑、绿、红

　　Open type 22 2 2 black, green and red

　　LAl0-3K

　　开启式 3 3 3 黑、绿、红

　　Open 3 3 3 3 black, green and red

　　LAl0-2H

　　保护式 2 2 2 黑、绿、红

　　Protected 22 2 2 black, green, red

　　LAl0-3H

　　保护式 3 3 3 红、绿、红

　　Protected 3 3 3 3 red, green, red

　　LAl8-22J 500 5 元件 ( 紧急式 ) 2 2 1 红

　　Lal8-22j 500 5 element (emergency) 22 1 red

　　LAl8-44J

　　元件 ( 紧急式 ) 4 4 1 红

　　Element (emergency) 4 41 red

　　LAl8-66J

　　元件 ( 紧急式 ) 6 6 1 红

　　Element (emergency) 66 1 red

　　LAl8-22Y

　　元件 ( 钥匙式 ) 2 2 1 本色

　　Element (key type) 22 1 natural color

　　LAl8-44Y

　　元件 ( 钥匙式 ) 4 4 1 本色

　　Element (key type) 4 41 natural color

　　LAl8-22X

　　元件 ( 旋钮式 ) 2 2 1 黑

　　Element (knob type) 22 1 Black

　　LAl8-44X

　　元件 ( 旋钮式 ) 4 4 1 黑

　　Element (knob type) 44 1 Black

　　LAl8-66X

　　元件 ( 旋钮式 ) 6 6 1 黑

　　Element (knob type) 66 1 Black

　　LAl9 — 11J

　　元件 ( 紧急式 ) 1 1 1 红

　　Element (emergency) 11 1 red

　　LAl9 — 11D

　　元件 ( 带指示灯 ) 1 1 1 红、绿、黄

　　Element (with indicator light) 1111 red, green and yellow

　　蓝、白

　　Blue, white

　　在购买按钮开关的时候一定要根据使用环境选择适合的按钮开关，如果有不懂的地方可以随时咨询红宝电气客服。

　　When buying the button switch, you must choose the appropriate button switch according to the use environment. If you don't understand, you can consult Hongbao electric customer service at any time.