1 简介
扭子开关常做为设备档位的开关元器件。
扭子开关又叫钮子开关
2 分类
钮子开关是一种手动控制的微型开关,这点与拨码开关相似。大部分钮子开关在交直流电源电路的通断控制中广泛应用,较少应用于几千赫或高达1 兆赫的电路中。下面来具体介绍一下。
1.防溅式球形钮柄钮子开关
面板安装采用‘O’环密封的防溅式,钮柄为球形,故为防溅式球形钮柄钮子开关。它的端子是直插形式,端子底部采用环氧树脂密封。抗腐蚀性强,适用于汽车零部件。
如:ANT系列具体参数及尺寸如下,
SPECIFICATIONS
Electrical Ratings
| 5A @ 120VAC, 28VDC; 2A @ 250VAC See Contact Options
|
Electrical Life
| 50,000 cycles typical
|
Contact Resistance
| < 20 mΩ max initial @ 2-4VDC, 100mA
|
Dielectric Strength
| 1500Vrms min
|
Insulation Resistance
| > 100MΩ min
|
Operating Temperature Storage Temperature
| -40°C to 85°C
-40°C to 85°C
|
2.垂直安装直角钮子开关
端子垂直安装及端子引脚为直角,故为垂直安装直角钮子开关。它的触点采用镀金材质,可靠性强。多用于防盗器材,警视系统中。
如:BST系列具体参数及尺寸如下,
SPECIFICATIONS
Electrical Ratings
| 3A @ 120VAC, 28VDC; 1.5A @ 250VAC See contact options
|
Electrical Life
| 30,000 cycles typical
|
Contact Resistance
| < 20 mΩ max initial @ 2-4VDC, 100mA
|
Dielectric Strength
| 1000Vrms min
|
Insulation Resistance
| > 1,000MΩ min
|
Operating Temperature Storage Temperature
| -40°C to 85°C
-40°C to 85°C
|
3.双极单联钮子开关
开关同时开断相线和N线,控制一个支路,故为双极单联钮子开关。触点为3PDT形式,多用于多媒体喇叭、音响。
如:AST系列具体参数及尺寸如下,
SPECIFICATIONS
Electrical Ratings
| 5A @ 120VAC, 28VDC; 2A @ 250VAC See Contact Options
|
Electrical Life
| 30,000 cycles typical
|
Contact Resistance
| < 20 mΩ max initial @ 2-4VDC, 100mA
|
Dielectric Strength
| 1500Vrms min
|
Insulation Resistance
| > 100MΩ min
|
Operating Temperature Storage Temperature
| -40°C to 85°C
-40°C to 85°C
|
4.标准表面贴装无螺纹钮子开关
端子采用标准的贴装形式,它的套管没有螺纹,称之为标准表面贴装无螺纹钮子开关。触点为单刀双掷,它的电气寿命高达55000次。多用于医疗器材。
如:SST系列具体参数及尺寸如下,
SPECIFICATIONS
Electrical Ratings
| 5A @ 120VAC, 28VDC; 2A @ 250VAC See Contact Options
|
Electrical Life
| 55,000 cycles typical
|
Contact Resistance
| ≤ 20mΩ initial @ 2-4VDC, 100mA
|
Dielectric Strength
| 1500Vrms min
|
Insulation Resistance
| > 100MΩ min
|
Operating Temperature Storage Temperature
| -40°C to 85°C
-40°C to 85°C
|
5.水平安装直角型钮子开关
相比垂直开关,它只是方向变为了水平,故为水平安装直角型钮子开关。触点为双刀双掷,端子底部采用Epoxy Seal。大多用于电脑周边设备。
如:BNT系列具体参数及尺寸如下,
SPECIFICATIONS
Electrical Ratings
| 3A @ 120VAC, 28VDC; 1A @ 250VAC See Contact Options
|
Electrical Life
| 30,000 cycles typical
|
Contact Resistance
| < 20 mΩ max initial @ 2-4VDC, 100mA
|
Dielectric Strength
| 1500Vrms min
|
Insulation Resistance
| > 100MΩ min
|
Operating Temperature Storage Temperature
| -40°C to 85°C
-40°C to 85°C
|
以上分类基于RIVERSUN (HONG KONG) LTD
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