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    Relays & Signal Conditioning

    We stock a large choice of relay products for a wide variety of applications. Within our range, you will find products such as latching and non-latching relays, solid state relays, interface relays and reed relays. All from trusted brands such as our own RS PRO brand, Omron, Finder, TE Connectivity, Panasonic, Phoenix Contact and more.

    What is a Relay?

    Relays are a type of switch that is operated electronically to turn on or off current within an electric circuit. Relays operate similar to a typical light switch, where power is switched on and off when the switch lever is moved, the main difference is that a relay is operated by an electrical circuit rather than manually pressed.

    Relays have many different uses and are often utilised in situations where isolation is necessary or when a circuit needs to be controlled with a low-power signal. There are also specialised types of relay that are used for very high power applications, these are referred to as contactors.

    Types of Relay

    • Electromechanical Relay (EMR): An electromechanical relay uses a physical moving arm, triggered by a voltage applied to the relay coil, this arm connects contacts within the output component of the relay. The movement of the arm allows an electrical circuit to be completed, allowing current to flow to the connected equipment. The physical components within the relays commonly make a "click" sound, which can be used as an audible operation indicator.
    • Solid State Relay (SSR): Solid state relays provide a similar function to an EMR but these do not contain any moving components, increasing long-term reliability. SSR's feature semiconductor switching elements, typically thyristors, triacs and diodes that transmits and energises the output signal. When activated, the input signal acts like a switch that allows a high-voltage signal to pass through the SSRs output components.
    Relay Accessories
    Relay Accessories
    Relays
    Relays
    Signal Conditioners & Isolators
    Signal Conditioners & Isolators

    16667 Products showing for Relays & Signal Conditioning

    805 of 834
    Dold Monitoring Relay, SPDT, 24 → 240V ac/dc, DIN Rail
    • RS stock no. 426-868
    • Mfr. Part No. MH9397.12/010 3AC24-400V AC12A UH=AC230V tv=0-10s
    Each
    R 7 731,93
    Elesta DIN Rail Force Guided Relay, 12V dc Coil Voltage, 3 Pole, 2NO/1NC
    • RS stock no. 286-1795
    • Mfr. Part No. SMF219-12VDC (H306701)
    1 Tray of 6
    R 15 331,42
    Relay module, 230 V AC
    • RS stock no. 577-565
    • Mfr. Part No. 8881600000
    Each
    R 315,73
    Finder PCB Mount Relay, 6V dc Coil, 10A Switching Current, SPDT
    • RS stock no. 248-1786
    • Mfr. Part No. 361190064011
    Each (In a Pack of 25)
    R 62,099
    Finder 39 Series Solid State Relay, 80 A Load, DIN Rail Mount, 240 V ac/dc Load, 275 V ac/dc Control
    • RS stock no. 494-882
    • Mfr. Part No. 39.00.7.024.8240
    Each
    R 949,31
    Elesta DIN Rail Force Guided Relay, 12V dc Coil Voltage, 4 Pole, 3PDT
    • RS stock no. 286-1786
    • Mfr. Part No. SMD319-12VDC (H306586)
    1 Tray of 6
    R 22 721,56
    Phoenix Contact 157 Series Electromechanical Interface Relay, DIN Rail Mount, 24V dc Coil, 30A Load
    • RS stock no. 522-085
    • Mfr. Part No. 1577412
    1 Pack of 10
    R 1 774,70
    Siemens DIN Rail Relay
    • RS stock no. 275-1953
    • Mfr. Part No. 7PG2120-0AA00-2HA0
    Each
    R 60 679,03
    Omron PCB Mount Relay, 5V dc Coil, SPST
    • RS stock no. 243-6567P
    • Mfr. Part No. G2RL-2A DC5
    Each (Supplied in a Tube)
    R 65,66
    Phoenix Contact Plug In Power Relay, 60V dc Coil, DPDT
    • RS stock no. 857-1367
    • Mfr. Part No. 2903662
    1 Box of 10
    R 2 211,74
    TE Connectivity PCB Mount Power Relay, 12V dc Coil, 8A Switching Current, SP-NC
    • RS stock no. 680-4145
    • Mfr. Part No. RY551012
    Each
    R 80,26
    Sensata Cynergy3 PCB Mount Reed Relay, 12V dc Coil, 3500V Max, 2 A Max, 240Ω
    • RS stock no. 189-2419
    • Mfr. Part No. DBT71205U
    Each
    R 1 011,25
    Phoenix Contact Plug In Power Relay, 48V dc Coil, 10mA Switching Current, SPDT
    • RS stock no. 120-128
    • Mfr. Part No. 2834821
    1 Pack of 10
    R 970,88
    TE Connectivity PCB Mount Force Guided Relay, 5V dc Coil Voltage, 1 Pole, SPDT
    • RS stock no. 164-8241
    • Mfr. Part No. 7-1415006-1
    Each (In a Box of 20)
    R 246,976
    Panasonic PCB Mount Power Relay, 24V dc Coil, 5A Switching Current, DPST
    • RS stock no. 173-8192
    • Mfr. Part No. DSP2A-DC24V
    Each (In a Box of 50)
    R 186,575
    Better World
    Schneider Electric Relay Socket, 10A Switching Current, 3PDT
    • RS stock no. 212-4776
    • Mfr. Part No. RUMF32BD
    Each (In a Pack of 10)
    R 431,401
    Lovato HR SERIES DIN Rail Relay Socket, for use with HR SERIES
    • RS stock no. 247-9590
    • Mfr. Part No. HR6XS21
    Each
    R 149,04
    TE Connectivity PCB Mount Signal Relay, 2A Switching Current, DPDT
    • RS stock no. 473-037
    • Mfr. Part No. 1617038-8
    Each
    R 5 614,98
    TE Connectivity 4-1415 Series Electromechanical Interface Relay, 230V Coil, DPDT, 2-Pole, 8A Load
    • RS stock no. 510-041
    • Mfr. Part No. 4-1415540-8
    1 Pack of 8
    R 3 396,14
    ABB R600 Series Interface Relay, DIN Rail Mount, 12V dc Coil, SPDT, 6A Load
    • RS stock no. 232-0313
    • Mfr. Part No. 1SNA645073R0000 R600-RB121-12VDC
    Each
    R 405,74
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