簡介
扭子開關常做為設備檔位的開關元器件。
扭子開關又叫鈕子開關
分類
鈕子開關是一種手動控制的微型開關,這點與撥碼開關相似。大部分鈕子開關在交直流電源電路的通斷控制中廣泛套用,較少套用於幾千赫或高達1 兆赫的電路中。下面來具體介紹一下。
1.防濺式球形鈕柄鈕子開關
面板安裝採用‘O’環密封的防濺式,鈕柄為球形,故為防濺式球形鈕柄鈕子開關。它的端子是直插形式,端子底部採用環氧樹脂密封。抗腐蝕性強,適用於汽車零部件。
如: ANT系列具體參數及尺寸如下,
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.垂直安裝直角鈕子開關
端子垂直安裝及端子引腳為直角,故為垂直安裝直角鈕子開關。它的觸點採用鍍金材質,可靠性強。多用於防盜器材,警視系統中。
如: BST系列具體參數及尺寸如下,
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.雙極單聯鈕子開關
開關同時開斷相線和N線,控制一個支路,故為雙極單聯鈕子開關。觸點為3PDT形式,多用於多媒體喇叭、音響。
如: AST系列具體參數及尺寸如下,
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.標準表面貼裝無螺紋鈕子開關
端子採用標準的貼裝形式,它的套管沒有螺紋,稱之為標準表面貼裝無螺紋鈕子開關。觸點為單刀雙擲,它的電氣壽命高達55000次。多用於醫療器材。
如: SST系列具體參數及尺寸如下,
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.水平安裝直角型鈕子開關
相比垂直開關,它只是方向變為了水平,故為水平安裝直角型鈕子開關。觸點為雙刀雙擲,端子底部採用Epoxy Seal。大多用於電腦周邊設備。
如: BNT系列具體參數及尺寸如下,
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 |
以上分類基於 RIVERSUN (HONG KONG) LTD