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    Relays

    Relays are electromagnetic switches powered by a relatively small current and thanks to their structure they can both switch off or amplify a much larger current. They have been largely used in the telecom industry since the 19th century, as well as in the industrial and automotive sectors. Their application has now extended to computing and medical research, making relays a fundamental component for devices used in everyday life.

    How does a general purpose relay work?

    Relays work based on electromagnetic force. The core of a relay is made of a coil of wire (commonly copper, which is low-resistance and facilitates power transmission) which becomes a magnet when it receives an electric current.

    They work as a bridge between devices, receiving an input signal from the first one and transmitting an output to the second. The electromagnetic current generated by the electrical input from the first device on the relay causes the contacts to open or close, determining the transmission or the blockage of the electrical signal to the second device.

    What is a general purpose relay used for?

    There are different kinds of relays suited for different applications:

    • Latching relays: they can be operated by a magnetic or mechanical system, and can feature a single or a double-winding coil. Their position stays where it was when the circuit was last powered. They're commonly used to operate automatic doors and gates, as well as in lighting.
    • Non latching relays: differ from how latching relays work as non-latching relays go back to their initial position when the power is removed from the circuit. Normally found in push-button applications such as keyboards.
    • High frequency and RF relays: most commonly used in radio system, computing, testing and industrial equipment where high voltages are involved and standard relays cannot support an efficient function. An example of application is in radio devices: relays separate the circuits responsible for receiving and transmitting high frequency signals.

    Whatever the relay is you are looking for, we offer a broad range from the most trusted suppliers worldwide, such as Panasonic, Omron, TE Connectivity and our very own RS Pro.

    Automotive Relays
    Automotive Relays
    Earth Leakage Relays
    Earth Leakage Relays
    Electromechanical Interface Relays
    Electromechanical Interface Relays
    Force Guided Relays
    Force Guided Relays
    HF & RF Relays
    HF & RF Relays
    Monitoring Relays
    Monitoring Relays
    Power Relays
    Power Relays
    Reed Relays
    Reed Relays
    Safety Relays
    Safety Relays
    Signal Relays
    Signal Relays
    Solid State Interface Relays
    Solid State Interface Relays
    Solid State Relays
    Solid State Relays
    Timer Relays
    Timer Relays

    13914 สินค้าที่แสดงสำหรับ Relays

    1 จาก 696
    Tele V2ZQ10 Series DIN Rail Mount Timer Relay, 24 → 240V ac/dc, 1-Contact, 0.05 → 1s, SPDT
    • RS Stock No. 798-3517
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. V2ZQ10 24-240V AC/DC
    Each
    THB2,500.95
    Phoenix Contact PCB Mount Power Relay, 24V dc Coil, 6A Switching Current, SPDT
    • RS Stock No. 290-1416
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. 2961105
    Each
    THB535.46
    Weidmuller TRZ Series Interface Relay, DIN Rail Mount, 24V Coil, SPDT, 1-Pole
    • RS Stock No. 892-8855
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. 1122890000
    Each
    THB752.76
    Hongfa Europe GMBH 4RM Series Interface Relay, DIN Rail Mount, 110V ac Coil, 4PDT, 4-Pole, 5A Load
    • RS Stock No. 137-2128
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. 4RM-110A-5
    Each
    THB325.65
    Finder PCB Mount Relay, 24V dc Coil, 6A Switching Current, SPDT
    • RS Stock No. 457-2846
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. 34.51.7.024.0010
    Each
    THB270.11
    Omron PCB Mount Signal Relay, 9V dc Coil, 2A Switching Current, DPDT
    • RS Stock No. 683-9845
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. G6S-2-Y DC9
    Each
    THB117.62
    RS PRO Solid State Relay, 2 A Load, DIN Rail Mount, 30 V Load, 30 V Control
    • RS Stock No. 888-6859
    Each: (In a Pack of 5)
    THB1,112.038
    Better World
    Schneider Electric DIN Rail Power Relay, 110 V dc, 230 → 240V ac Coil, 16A Switching Current, SPDT
    • RS Stock No. 244-0078
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. GF1611U7
    Each
    THB2,247.95
    Dold IK7817N Series DIN Rail Mount Timer Relay, 12 → 240V ac/dc, 1-Contact, 0.03 → 300 min, 0.06 →
    • RS Stock No. 465-0609
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. IK7817N.81/200 AC/DC12-240V 0.02s-300h
    Each
    THB8,675.62
    Phoenix Contact RIF Series Interface Relay, DIN Rail Mount, 24V dc Coil, 4PDT, 4-Pole
    • RS Stock No. 794-3686
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. 2903308
    Each
    THB526.06
    Teledyne PCB Mount RF Relay, 12V dc Coil, DPDT
    • RS Stock No. 758-2433
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. 712D-12
    Each
    THB3,488.67
    Finder 85 Series Series Plug In Timer Relay, 230V ac, 4-Contact, 0.05 → 100 s, 3 → 100min, 4PDT
    • RS Stock No. 450-4742
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. 85.04.8.240.0000
    Each
    THB2,008.25
    Panasonic Surface Mount Signal Relay, 12V dc Coil, 1A Switching Current, DPDT
    • RS Stock No. 699-5853
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. AGN200A12
    Each
    THB362.37
    Releco Plug In Power Relay, 24V dc Coil, 10A Switching Current, DPDT
    • RS Stock No. 376-391
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. C7-A20X / DC 24 V
    Each
    THB660.35
    Finder PCB Mount Relay, 60V dc Coil, 6A Switching Current, SPDT
    • RS Stock No. 457-2852
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. 34.51.7.060.0010
    Each
    THB364.20
    TE Connectivity PCB Mount Reed Relay, 24V dc Coil, SPDT, 175V dc Max, 2000Ω
    • RS Stock No. 256-2285
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. 4-1393763-0
    Each
    THB958.40
    Siemens SIRIUS 3SK1 Time Delay Safety Relay, 24V dc, Single Channel, 4 Safety Contacts
    • RS Stock No. 784-5807
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. 3SK1121-1CB42
    Each
    THB18,555.99
    Siemens Thermistor Motor Protection Monitoring Relay, SPDT, DIN Rail
    • RS Stock No. 175-2269
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. 3RN2000-1AA30
    Each
    THB4,620.48
    TE Connectivity PCB Mount Power Relay, 24V dc Coil, 8A Switching Current, DPDT
    • RS Stock No. 256-3654
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. RP421024
    Each
    THB550.14
    Celduc SO8 Series Solid State Relay, 40 A Load, Panel Mount, 275 V rms Load, 265 V Control
    • RS Stock No. 499-0547
    • หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No. SO843970
    Each
    THB2,065.28
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    Guides & Articles

    Article image
    Latching Relays Guide
    In our comprehensive guide we look at what latching relays are, what types and sizes are available, as well as the different uses of latching relays.
    Read more
    Article image
    Solid State Relays Guide
    This complete guide looks at what solid state relays are, how they work, the various circuits and the different types that are currently available.
    Read more

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