Relays & Signal Conditioning

At RS, we stock a large choice of relay switch 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 our relay switch products are from trusted electrical relay suppliers 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 operate electronically to turn AC or DC currents on or off within an electrical circuit. Relays operate similar to a typical light switch, where power is switched on and off when the switch lever is moved, but the main difference lies in how 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 switches 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 AC or DC 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' feature semiconductor switching elements; typically thyristors, triacs and diodes that transmit and energise 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.

Shop relays, relay accessories, and signal conditioners isolators at RS today.

Relay Accessories
Relay Accessories

Relays
Relays

Signal Conditioners & Isolators
Signal Conditioners & Isolators

17399 Products showing for Relays & Signal Conditioning

8 of 870
In Stock
Phoenix Contact PLC-OPT- 24DC/ 48DC/100 Solid State Interface Relay DIN Rail Push-in
  • RS Stock No. 711-4715
  • Mfr. Part No. 2900352
Subtotal (1 unit)
PHP1,772.56(exc. VAT)
PHP1,772.56/unit
Stocked by manufacturer
Better World
Schneider Electric Monitoring Relay, 1 Phase, SPDT, DIN Rail, 24V ac, 240 V ac 240 V ac
  • RS Stock No. 124-0182
  • Mfr. Part No. RM22LG11MR
Subtotal (1 unit)
PHP6,466.33(exc. VAT)
PHP6,466.33/unit
In Stock
TE Connectivity PCB Power Relay, 24V dc Coil, 6A Switching Current, SPDT
  • RS Stock No. 231-2383
  • Mfr. Part No. V23092-A1024-A301 2-1393236-4
Subtotal (1 unit)
PHP633.60(exc. VAT)
PHP633.60/unit
Limited 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)
PHP2,223.46(exc. VAT)
PHP2,223.46/unit
In Stock
Weidmüller Panel Power Relay, 230V ac Coil, 5A Switching Current, 4PDT
  • RS Stock No. 892-8925
  • Mfr. Part No. 7760056086
Subtotal (1 unit)
PHP696.55(exc. VAT)
PHP696.55/unit
In Stock
Omron Non-Latching Relay, 21V dc Coil, 6A Switching Current, SPDT
  • RS Stock No. 230-5174
  • Mfr. Part No. G2RV-1-S-G DC21
Subtotal (1 unit)
PHP748.39(exc. VAT)
PHP748.39/unit
In Stock
Omron Non-Latching Relay, 24V dc Coil, 10A Switching Current, 4PDT
  • RS Stock No. 215-7277
  • Mfr. Part No. LY4I4N 24VDC
Subtotal (1 unit)
PHP1,498.66(exc. VAT)
PHP1,498.66/unit
In Stock
Dold Monitoring Relay, 1 Phase, DPDT, DIN Rail, 0.1A to 10A, 230V ac
  • RS Stock No. 240-9320
  • Mfr. Part No. BA9053/410 AC1A/5A/10A AC230V 0-20S
Subtotal (1 unit)
PHP18,360.51(exc. VAT)
PHP18,360.51/unit
In Stock
Better World
Schneider Electric Harmony Time Series Timer Relay, 2-Contact, 24 to 240 V dc 230V ac, 1-Function, DPDT Switch
  • RS Stock No. 914-8209
  • Mfr. Part No. REXL2TMP7
Subtotal (1 unit)
PHP4,590.51(exc. VAT)
PHP4,590.51/unit
In Stock
RS PRO PCB Power Relay, 12V dc Coil, 16A Switching Current, SPDT
  • RS Stock No. 800-4448
Subtotal (1 unit)
PHP260.33(exc. VAT)
PHP260.33/unit
In Stock
ABB CT-C Series DIN Rail Timer Relay, 1-Contact, 24 to 48 V dc 24V ac, 240 V ac, 0.05 s to 100 h, 1-Function, SPDT
  • RS Stock No. 210-4289
  • Mfr. Part No. 1SVR508100R0000
Subtotal (1 unit)
PHP3,572.17(exc. VAT)
PHP3,572.17/unit
Stocked by manufacturer
Omron Surface Power Relay, 200V ac, 220 V ac Coil, 10A Switching Current, 4PDT
  • RS Stock No. 102-688
  • Mfr. Part No. LY4 AC200/220
Subtotal (1 unit)
PHP1,189.16(exc. VAT)
PHP1,189.16/unit
In Stock
Finder 84 Series DIN Rail Digital Timer, 2-Contact, 110 to 240 V dc 12V ac, 24 V ac, 0.1 s to 9999 h,
  • RS Stock No. 123-2800
  • Mfr. Part No. 84.02.0.024.0000
Subtotal (1 unit)
PHP6,980.31(exc. VAT)
PHP6,980.31/unit
In Stock
TE Connectivity PCB Power Relay, 24V dc Coil, 16A Switching Current, SPDT
  • RS Stock No. 189-4109
  • Mfr. Part No. RT314024 9-1393239-8
Subtotal (1 unit)
PHP204.63(exc. VAT)
PHP204.63/unit
Stocked by manufacturer
Phoenix Contact Phase/Voltage Monitoring Relays, 3 Phase, 160/690 V Monitor Range, 2 CO, DIN Rail, 24V ac, 240 V ac 24
  • RS Stock No. 497-819
  • Mfr. Part No. 1336412
Subtotal (1 unit)
PHP19,098.17(exc. VAT)
PHP19,098.17/unit
In Stock
Omron PYF 14 Way 250V ac DIN Rail Relay Socket, for use with MY4IN, MY4ZIN1, MY4ZN1, MY4N, MY4ZIN1-D2, MY4IN1, MY4IN-D2,
  • RS Stock No. 196-6147
  • Mfr. Part No. PYF14A-N
Subtotal (1 unit)
PHP836.41(exc. VAT)
PHP836.41/unit
In Stock
Phoenix Contact 3RS7003 Series Signal Conditioner, Current/Voltage Input, Current Output, 24V dc Supply, ATEX
  • RS Stock No. 489-2881
  • Mfr. Part No. 2864176
Subtotal (1 unit)
PHP24,640.40(exc. VAT)
PHP24,640.40/unit
In Stock
Omron H3CR Series DIN Rail Timer Relay, 2-Contact, 100 to 48 V dc 100V ac, 240 V ac, 0.05 s to 30 h,
  • RS Stock No. 177-0095
  • Mfr. Part No. H3CR-F8N AC100-240/DC100-125
Subtotal (1 unit)
PHP8,113.00(exc. VAT)
PHP8,113.00/unit
In Stock
Omron G3NA Series Solid State Relay, 25 A Load, Screw Mount, 480 V Load
  • RS Stock No. 215-1579
  • Mfr. Part No. G3NA-425B-UTU-2 DC5-24
Subtotal (1 unit)
PHP5,346.79(exc. VAT)
PHP5,346.79/unit
Stocked by manufacturer
Siemens Monitoring Relay, DIN Rail, 240 V dc, 240V ac, 60 V ac
  • RS Stock No. 275-1988
  • Mfr. Part No. 7SR1002-1KA10-2CA0
Subtotal (1 unit)
PHP90,506.33(exc. VAT)
PHP90,506.33/unit
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