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    Switches

    顧名思義，電子開關可以開啟或關閉電路來控制電流的流動，應用廣泛，也是所有電子電路中的必要基本元件。開關掣可以中斷電流，開啟或關閉電路，從而控制串聯的電器或其他功能。

    電子開關如何運作？

    電子開關內部包含機械端子，這些端子與金屬接觸點連接。當端子與接觸點接觸時，開關處於關閉狀態，電流可以通過；當端子與接觸點不接觸時，開關便處於開啟狀態，電流無法通過電路。

    電子開關的種類

    電子開關的種類一般取決於電路連接的方式，例如搖臂開關（rocker switches）就是左右搖動的開關。此外，開關也可以根據設備來進行分類，例如，鍵盤開關便用於電子鍵盤。而以下是一些常見的電子開關類型：

    立即註冊RS線上帳戶，選購各種精選電子用品，接收最新優惠資訊！

    開關掣的規格

    開關掣的規格通常包括其「極數」和「擲數」。控制的電路數量稱為「極數」，而開關能夠採用的位置數量則稱為「擲數」。常見的組合有：

    • SPST（單極單擲）
    • SPDT（單極雙擲）
    • DPST（雙極單擲）
    • DPDT（雙極雙擲）

    開關的品牌推薦

    RS 歐時提供一系列不同規格和種類的電子開關，多款精選供應商品牌包括RS PRO、Schneider Electric、Siemens等，多年來深受香港用家信賴。如你對產品規格或價錢有任何疑問，或需要尋求技術協助，歡迎隨時與我們聯絡。

    即日訂購，最快次日發貨，網上落單滿額即享免運費！

    Capacitive, Magnetic and Piezo Switches
    Capacitive, Magnetic and Piezo Switches
    DIP & Rotary Encoded Switches
    DIP & Rotary Encoded Switches
    Domestic Installation Switches
    Domestic Installation Switches
    Foot Switches & Components
    Foot Switches & Components
    Joysticks & Components
    Joysticks & Components
    Key Switches & Selector Switches
    Key Switches & Selector Switches
    Keyboard & Keypad Switches
    Keyboard & Keypad Switches
    Limit & Position Switches
    Limit & Position Switches
    Micro Switches & Detector Switches
    Micro Switches & Detector Switches
    Push Button Switches & Components
    Push Button Switches & Components
    Rocker Switches & Components
    Rocker Switches & Components
    Rope Pull Switches & Components
    Rope Pull Switches & Components
    Rotary Switches & Components
    Rotary Switches & Components
    Safety Enabling & Control Switches
    Safety Enabling & Control Switches
    Safety Interlock Switches & Components
    Safety Interlock Switches & Components
    Switch Disconnectors & Components
    Switch Disconnectors & Components
    Toggle Switches & Slide Switches
    Toggle Switches & Slide Switches

    43044 產品顯示為 Switches

    10 的 999+
    Product Image
    MK Electric Rocker Light Switch, 2 Way, 2 Gang, Albany Plus
    RS庫存編號:
    832-6533
    製造零件編號:
    K4672BRC
    HK$266.27
    个
    Product Image
    Schneider Electric Harmony XB5 Series Illuminated Push Button, Panel Mount, 22mm Cutout, SPDT, IP66, IP67, IP69(IP69K)
    RS庫存編號:
    609-6338
    製造零件編號:
    XB5AW31B5
    HK$240.30
    个
    Product Image
    Idec HW Series Twist Release Emergency Stop Push Button, Panel Mount, 22mm Cutout, 1 NO + 1 NC, IP65
    RS庫存編號:
    832-6158
    製造零件編號:
    HW1B-V4F11-R
    HK$339.80
    个
    Product Image
    Omron Roller Lever Micro Switch, Pre-wired Terminal, 2 A @ 250 V ac, SPDT, IP67
    RS庫存編號:
    682-2244
    製造零件編號:
    D2SW-P2L2M
    HK$117.04
    个（每托盘 5 ）
    Product Image
    ZF Short Lever Micro Switch, Solder Terminal, 100 mA @ 30 V dc, SPDT, IP6K7
    RS庫存編號:
    517-595
    製造零件編號:
    DC3C-A1LB
    HK$52.00
    个
    Product Image
    Socomec Fuse Switch Disconnector, 3 Pole, 400A Max Current, 10A Fuse Current
    RS庫存編號:
    513-5741
    製造零件編號:
    3841 3039
    HK$6,851.80
    个
    Product Image
    EAO 82 Series Illuminated Illuminated Push Button Switch, Latching, Panel Mount, 16mm Cutout, SPDT, Blue LED, 12V,
    RS庫存編號:
    247-8770
    製造零件編號:
    82-4151.2123
    HK$180.50
    个
    Product Image
    EAO 82 Series Illuminated Illuminated Push Button Switch, Latching, Panel Mount, 22.3mm Cutout, SPDT, Blue LED, 240V,
    RS庫存編號:
    247-9051
    製造零件編號:
    82-6152.2123.B002
    HK$200.20
    个
    Product Image
    Schneider Electric Harmony XB4 Series Push Button, Slow Brake, Panel Mount, 22mm Cutout, SPST, IP66, IP67, IP69(IP69K)
    RS庫存編號:
    609-5307
    製造零件編號:
    XB4BA3341
    HK$190.30
    个
    Product Image
    Schneider Electric Harmony XB4 2-position Key Switch Head, Spring Return from Left and Right, 22mm Cutout
    RS庫存編號:
    609-2358
    製造零件編號:
    ZB4BG610
    HK$442.60
    个
    Product Image
    Schneider Electric Harmony XB Series Contact Block, 1NO + 1NC
    RS庫存編號:
    610-2809
    製造零件編號:
    ZBE205
    HK$95.80
    个
    RS PRO
    Product Image
    RS PRO, Panel Mount White LED Pilot Light, 22mm Cutout, IP65, Round, 24V ac/dc
    RS庫存編號:
    909-2522
    HK$42.90
    个
    Product Image
    Honeywell Plunger Limit Switch, IP67, 480V ac Max, 10A Max
    RS庫存編號:
    311-2128
    製造零件編號:
    2LS1-4CN151
    HK$2,173.20
    个
    Product Image
    Alps Alpine Center-push, 4-Axis Joystick Switch Lever, Momentary
    RS庫存編號:
    123-9636
    製造零件編號:
    RKJXT1F42001
    HK$62.50
    个
    Product Image
    EAO 82 Series Illuminated Push Button Switch, Momentary, Panel Mount, 19mm Cutout, SPDT, White LED, 240V, IP65, IP67
    RS庫存編號:
    200-4224
    製造零件編號:
    82-5151.1152
    HK$159.50
    个
    Product Image
    MK Electric Silver Metalclad Fan Isolator Switch, 250V, IP2X
    RS庫存編號:
    500-0516
    製造零件編號:
    K2857 ALM
    HK$354.11
    个
    Product Image
    ABB Switch Disconnector Terminal Shroud, 1SCA Series
    RS庫存編號:
    231-9129
    製造零件編號:
    1SCA022731R8400 OTS250G1S/4
    HK$351.30
    个
    Product Image
    Siemens SIRIUS ACT 3SU10 Series 2 Position Selector Switch Head, 22mm Cutout, Black Handle
    RS庫存編號:
    173-6735
    製造零件編號:
    3SU1052-2BF10-0AA0
    HK$133.60
    个
    Product Image
    Schneider Electric Harmony XB6 Series Push Button, Panel Mount, 16mm Cutout, IP65
    RS庫存編號:
    817-2881
    製造零件編號:
    XB6AA11B
    HK$141.70
    个
    Product Image
    APEM 8 Way Through Hole DIP Switch SPST, Raised Actuator
    RS庫存編號:
    877-2148
    製造零件編號:
    NDS-08-V
    HK$12.714
    毎管：21 个
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