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

18423 Products showing for Relays & Signal Conditioning

1 of 922
In Stock
Omron G3NA Series Solid State Relay, 10 A Load, DIN Rail Mount, 240 V ac Load
  • RS Stock No. 794-8277
  • Mfr. Part No. G3NA-210B-UTU DC5-24
Subtotal (1 unit)
Kr. 523,18(exc. VAT)
Kr. 523,18/unit
In Stock
Eaton ESR5, 230V ac Safety Relay, 3 Safety Contacts
  • RS Stock No. 812-8951
  • Mfr. Part No. 119380 ESR5-NO-31-230VAC
Subtotal (1 unit)
Kr. 3 212,12(exc. VAT)
Kr. 3 212,12/unit
In Stock
RS PRO DIN Rail Timer Relay, 2-Contact, 12 to 240 V dc 12V ac, 240 V ac, 0 to 100 Days, Multifunction-Function, SPDT
  • RS Stock No. 360-685
Subtotal (1 unit)
Kr. 515,68(exc. VAT)
Kr. 515,68/unit
In Stock
Allen Bradley, 230V ac Safety Relay, 2 Safety Contacts
  • RS Stock No. 447-5537
  • Mfr. Part No. 440R-N23112
Subtotal (1 unit)
Kr. 2 350,81(exc. VAT)
Kr. 2 350,81/unit
In Stock
TE Connectivity Automotive Relay, 12 V dc Coil Voltage, 20 A Switching Current, SPDT
  • RS Stock No. 237-3897
  • Mfr. Part No. 4-1904124-3
Subtotal (1 unit)
Kr. 57,50(exc. VAT)
Kr. 57,50/unit
Temporarily out of stock
Omron PCB Power Relay, 12V dc Coil, 16A Switching Current, SPDT
  • RS Stock No. 366-293
  • Mfr. Part No. G2R-1-E DC12
Subtotal (1 unit)
Kr. 61,09(exc. VAT)
Kr. 61,09/unit
In Stock
Phoenix Contact PCB Power Relay, 24V dc Coil, 6A Switching Current, SPDT
  • RS Stock No. 290-1416
  • Mfr. Part No. 2961105
Subtotal (1 unit)
Kr. 89,55(exc. VAT)
Kr. 89,55/unit
In Stock
Celduc DIN Rail Adapter for SA/SC/SM/SO/SU, 1LD00100
  • RS Stock No. 309-838
  • Mfr. Part No. 1LD00100
Subtotal (1 unit)
Kr. 105,81(exc. VAT)
Kr. 105,81/unit
In Stock
Hongfa Europe GMBH 4RM Series Interface Relay, DIN Rail, 12V dc Coil, 4PDT, 5A
  • RS Stock No. 137-2125
  • Mfr. Part No. 4RM-12-5
Subtotal (1 unit)
Kr. 119,95(exc. VAT)
Kr. 119,95/unit
In Stock
Phoenix Contact PLC-RSC-24DC/21 Series Interface Relay, DIN Rail, 24V dc Coil, SPDT, 9mA
  • RS Stock No. 358-8301
  • Mfr. Part No. 2966171
Subtotal (1 unit)
Kr. 172,16(exc. VAT)
Kr. 172,16/unit
In Stock
Phoenix Contact PSR-ESA, 24V ac/dc Safety Relay, 4 Safety Contacts, 1
  • RS Stock No. 666-7044
  • Mfr. Part No. 2963802
Subtotal (1 unit)
Kr. 2 605,06(exc. VAT)
Kr. 2 605,06/unit
Temporarily out of stock
RS PRO Solid State Relay, 30 A Load, DIN Rail Mount, 530 Vrms Load, 32V dc Control
  • RS Stock No. 121-3895
Subtotal (1 unit)
Kr. 955,78(exc. VAT)
Kr. 955,78/unit
In Stock
RS PRO 76XX Series Interface Relay, DIN Rail, 230V ac/dc Coil, SPDT
  • RS Stock No. 888-6919
Subtotal (1 pack of 5 units)
Kr. 953,27(exc. VAT)
Kr. 190,654/unit
In Stock
Hongfa Europe GMBH PCB Signal Relay, 5V Coil, 2A, DPDT
  • RS Stock No. 176-2909
  • Mfr. Part No. HFD2/005-S-L1-D
Subtotal (1 pack of 2 units)
Kr. 53,61(exc. VAT)
Kr. 26,805/unit
In Stock
Finder Monitoring Relay, 1 Phase, SPDT, DIN Rail, 24V ac 24 V dc
  • RS Stock No. 776-1575
  • Mfr. Part No. 72.01.8.024.0000
Subtotal (1 unit)
Kr. 844,50(exc. VAT)
Kr. 844,50/unit
In Stock
Hongfa Europe GMBH 2RM Series Interface Relay, DIN Rail, 24V dc Coil, DPDT, 8A
  • RS Stock No. 137-2111
  • Mfr. Part No. 2RM-24-3
Subtotal (1 unit)
Kr. 91,91(exc. VAT)
Kr. 91,91/unit
In Stock
RS Better World
Schneider Electric Power Relay, 48V ac Coil, 10A Switching Current, 3PDT
  • RS Stock No. 884-1483
  • Mfr. Part No. RXM3AB1E7
Subtotal (1 unit)
Kr. 128,81(exc. VAT)
Kr. 128,81/unit
In Stock
Releco MRC 5 Way 250V ac DIN Rail Relay Socket, for use with IRC Series
  • RS Stock No. 341-6874
  • Mfr. Part No. S-10
Subtotal (1 unit)
Kr. 60,81(exc. VAT)
Kr. 60,81/unit
In Stock
Omron Relay Jumper Bar for use with Push-In Plus Terminal Sockets
  • RS Stock No. 215-7880
  • Mfr. Part No. PYDN-7.75-040S
Subtotal (1 unit)
Kr. 35,54(exc. VAT)
Kr. 35,54/unit
In Stock
Phoenix Contact, 24V dc Safety Relay, NC, 4 NO Safety Contacts
  • RS Stock No. 129-525
  • Mfr. Part No. 2981949
Subtotal (1 unit)
Kr. 1 664,75(exc. VAT)
Kr. 1 664,75/unit
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