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

17179 Products showing for Relays & Signal Conditioning

1 of 344
In Stock
Omron P2RFZ 2 Way 250V ac Surface Relay Socket, for use with Push-In Plus Socket
  • RS Stock No. 196-2322
  • Mfr. Part No. P2RFZ-08-E
Subtotal (1 unit)
$25.74(exc. GST)
In Stock
Phoenix Contact RIF Series Interface Relay, DIN Rail, 24V dc Coil, 4PDT
  • RS Stock No. 794-3686
  • Mfr. Part No. 2903308
Subtotal (1 unit)
$32.60(exc. GST)
In Stock
GIC 225 Series Signal Conditioner, Current/Voltage Input, Current/Voltage Output, 24V dc Supply
  • RS Stock No. 884-2458
  • Mfr. Part No. 2SC3D11CC3
Subtotal (1 unit)
$126.26(exc. GST)
In Stock
Schneider Electric Harmony Relay RXG Series Interface Relay, DIN Rail, 230V ac Coil, SPDT
  • RS Stock No. 203-5192
  • Mfr. Part No. RXG13P7PV
Subtotal (1 unit)
$29.69(exc. GST)
In Stock
Weidmüller TRS Series Interface Relay, DIN Rail, 24V Coil, SPDT, 10mA
  • RS Stock No. 892-8789
  • Mfr. Part No. 1122770000
Subtotal (1 unit)
$33.10(exc. GST)
In Stock
Better World
Schneider Electric Harmony Relay RXM Series Interface Relay 12A
  • RS Stock No. 203-5242
  • Mfr. Part No. RXM2AB2BDPVM
Subtotal (1 unit)
$24.75(exc. GST)
In Stock
RS PRO TKB Series Timer Relay, 2-Contact 230V ac, 0.2 to 5 s, 1-Function, DPDT Switch Configuration
  • RS Stock No. 179-2928
Subtotal (1 unit)
$38.00(exc. GST)
In Stock
Omron G7SA, 24V dc Safety Relay
  • RS Stock No. 836-2738
  • Mfr. Part No. G7SA-5A1B DC24
Subtotal (1 unit)
$124.54(exc. GST)
In Stock
i-Autoc KSIM Series Solid State Relay, 25 A Load, Panel Mount, 280 V ac Load, 32V dc Control
  • RS Stock No. 102-5543
  • Mfr. Part No. KSIM240D25-L 045
Subtotal (1 unit)
$25.23(exc. GST)
Limited stock
Omron P7SA 10 Way 24V dc DIN Rail Relay Socket, for use with G7SA Series
  • RS Stock No. 548-026
  • Mfr. Part No. P7SA-10F-ND DC24
Subtotal (1 unit)
$85.71(exc. GST)
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)
$27.98(exc. GST)
In Stock
RS PRO 8 Way 300V DIN Rail Relay Socket, for use with RS PRO RKL Relays DPDT
  • RS Stock No. 121-7825
Subtotal (1 unit)
$14.05(exc. GST)
In Stock
Hongfa Europe GMBH Flange Power Relay, 240V ac Coil, 30A Switching Current, SPST
  • RS Stock No. 121-8073
  • Mfr. Part No. HF105F-4/240A1HSTF
Subtotal (1 unit)
$14.66(exc. GST)
In Stock
Omron P2RFZ 250V ac Surface Relay Socket, for use with Push-In Plus Socket
  • RS Stock No. 196-2321
  • Mfr. Part No. P2RFZ-05-E
Subtotal (1 unit)
$17.80(exc. GST)
In Stock
Omron PCB Power Relay, 24V dc Coil, 16A Switching Current, SPST
  • RS Stock No. 686-7051
  • Mfr. Part No. G2R-1A-E DC24
Subtotal (1 unit)
$12.76(exc. GST)
In Stock
Phoenix Contact RIF Series Interface Relay, DIN Rail, 24V dc Coil, DPDT, 18mA
  • RS Stock No. 184-0959
  • Mfr. Part No. 2905291
Subtotal (1 unit)
$27.96(exc. GST)
In Stock
Phoenix Contact PLC-RSC- 24UC/21 Series Interface Relay, DIN Rail, 24V ac/dc Coil, SPDT, 11mA
  • RS Stock No. 352-8832
  • Mfr. Part No. 2966184
Subtotal (1 unit)
$24.34(exc. GST)
In Stock
Phoenix Contact PCB Power Relay, 24V dc Coil, 8A Switching Current, DPDT
  • RS Stock No. 508-0023
  • Mfr. Part No. 2961192
Subtotal (1 unit)
$19.66(exc. GST)
Temporarily out of stock
Meder Reed Relay
  • RS Stock No. 349-1768
  • Mfr. Part No. DIL05-2C90-63L
Subtotal (1 unit)
$42.89(exc. GST)
In Stock
Omron G6B 4 Way 380V ac DIN Rail Relay Socket, for use with G6B-1174P-US-P6B, G6B (U) -1114P-US-P6B
  • RS Stock No. 655-4682
  • Mfr. Part No. P6B-04P
Subtotal (1 pack of 5 units)
$29.21(exc. GST)
In Stock
Hongfa Europe GMBH Flange Power Relay, 12V dc Coil, 30A Switching Current, SPST
  • RS Stock No. 121-8050
  • Mfr. Part No. HF116F-1/012DF-1HTFW
Subtotal (1 unit)
$11.46(exc. GST)
In Stock
Phoenix Contact RIF-0-RPT-12DC/21AU Series Relay Module, DIN Rail, 12V dc Coil, SPDT, 16mA
  • RS Stock No. 794-3777
  • Mfr. Part No. 2903369
Subtotal (1 unit)
$19.31(exc. GST)
In Stock
Phoenix Contact MINI MCR Series Signal Conditioner, Current Input, Current Output, 30V dc, 9.6 V dc Supply, ATEX
  • RS Stock No. 134-8671
  • Mfr. Part No. 2901994
Subtotal (1 unit)
$305.52(exc. GST)
In Stock
Phoenix Contact PLC-INTERFACE 1 Way 24V dc DIN Rail Module, for use with Electromechanical or Solid-State Relay
  • RS Stock No. 224-9870
  • Mfr. Part No. 2966058
Subtotal (1 pack of 10 units)
$91.66(exc. GST)
In Stock
Phoenix Contact PLC-RPT- 24DC/1/MS/ACT Series Interface Relay, DIN Rail, 230V dc Coil, SPST, 15.3mA
  • RS Stock No. 134-8728
  • Mfr. Part No. 2909677
Subtotal (1 unit)
$34.90(exc. GST)
In Stock
Schneider Electric Harmony Relay RXG Series Interface Relay, DIN Rail, 24V dc Coil, DPDT
  • RS Stock No. 203-5194
  • Mfr. Part No. RXG22BDPV
Subtotal (1 unit)
$26.45(exc. GST)
In Stock
Carlo Gavazzi RGS1 Series Solid State Relay, 25 A Load, Panel Mount, 240 V ac Load, 275V ac Control
  • RS Stock No. 775-3111
  • Mfr. Part No. RGS1A23A25KKE
Subtotal (1 unit)
$124.33(exc. GST)
In Stock
Phoenix Contact PLC-RSC-120UC/21 Series Interface Relay, Chassis, 120V ac Coil, SPDT, 3.5mA
  • RS Stock No. 801-8125
  • Mfr. Part No. 2966197
Subtotal (1 unit)
$40.05(exc. GST)
In Stock
TE Connectivity PCB Power Relay, 24V dc Coil, 8A Switching Current, SPDT
  • RS Stock No. 680-4081
  • Mfr. Part No. RY212024
Subtotal (1 unit)
$10.14(exc. GST)
In Stock
Theben DIN Rail Latching Relay, 230V ac Coil, 16A Switching Current, SPST
  • RS Stock No. 284-8554
  • Mfr. Part No. 3120130
Subtotal (1 unit)
$92.23(exc. GST)
In Stock
Better World
Schneider Electric Harmony Relay RSB 6 Way DIN Rail Relay Socket, for use with Relais Series RSZ
  • RS Stock No. 884-1341
  • Mfr. Part No. RSZE1S35M
Subtotal (1 unit)
$14.62(exc. GST)
In Stock
Phoenix Contact PLC-OPT Solid State Interface Relay 30V dc DIN Rail Plug-In
  • RS Stock No. 171-9684
  • Mfr. Part No. 2908172
Subtotal (1 unit)
$57.22(exc. GST)
In Stock
Better World
Schneider Electric Harmony Analog Series Analogue Converter, Current/Voltage Input, Current/Voltage Output, 24V Supply,
  • RS Stock No. 221-2854
  • Mfr. Part No. RMCN22BD
Subtotal (1 unit)
$268.33(exc. GST)
In Stock
Omron LY 8 Way 2000V DIN Rail Relay Socket, for use with LY Series Bi-polar Relay
  • RS Stock No. 235-5440
  • Mfr. Part No. PTFZ-08-E
Subtotal (1 unit)
$7.69(exc. GST)
In Stock
Omron H3DS Series DIN Rail Timer Relay, 2-Contact, 24 to 48 V dc 230V ac, 24 V ac, 0.1 s to 120 h,
  • RS Stock No. 177-0076
  • Mfr. Part No. H3DS-MLC
Subtotal (1 unit)
$180.02(exc. GST)
In Stock
Phoenix Contact MINI MCR Series Frequency Transducer, Frequency Input, Transistor Output, 24V dc Supply
  • RS Stock No. 134-8681
  • Mfr. Part No. 2902058
Subtotal (1 unit)
$509.81(exc. GST)
In Stock
Pilz PNOZ s4, 240V ac/dc, 48 V ac/dc Safety Relay, 3 Safety Contacts, 1
  • RS Stock No. 156-112
  • Mfr. Part No. 750134
Subtotal (1 unit)
$475.51(exc. GST)
In Stock
Celduc DIN Rail Relay Heatsink
  • RS Stock No. 672-1560
  • Mfr. Part No. WF151200
Subtotal (1 unit)
$66.13(exc. GST)
Temporarily out of stock
GIC Micon 175 Series DIN Rail Timer Relay, 2-Contact, 24 V dc 24V ac, 240 V ac, 0.1 s to 120 Days, DPDT Switch
  • RS Stock No. 597-202
  • Mfr. Part No. 2A5DT5
Subtotal (1 unit)
$92.62(exc. GST)
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)
$7.85(exc. GST)
In Stock
RS PRO Power Relay, 240V ac Coil, 16A Switching Current, SPDT
  • RS Stock No. 121-7809
Subtotal (1 unit)
$22.42(exc. GST)
In Stock
JM CONCEPT JK 7000 Series Isolating Signal Converter, Potentiometer Input, Current/Voltage Output, 230 V ac, 90 V ac,
  • RS Stock No. 232-8231
  • Mfr. Part No. JK7000A1
Subtotal (1 unit)
$533.39(exc. GST)
In Stock
Better World
Schneider Electric Harmony Relay RXG 5 Way 250V DIN Rail Relay Socket, for use with RXG Series Relay
  • RS Stock No. 852-6894
  • Mfr. Part No. RGZE1S35M
Subtotal (1 unit)
$10.89(exc. GST)
In Stock
RS PRO Power Relay, 24V dc Coil, 10A Switching Current, DPDT
  • RS Stock No. 348-784
Subtotal (1 unit)
$24.76(exc. GST)
In Stock
Omron 8 Way 250V ac DIN Rail Relay Socket, for use with G2R-2-S Series
  • RS Stock No. 794-8211
  • Mfr. Part No. P2RF-08-S
Subtotal (1 unit)
$24.02(exc. GST)
In Stock
Schneider Electric Harmony Relay RXG Series Interface Relay, DIN Rail, 24V ac Coil, DPDT
  • RS Stock No. 203-5239
  • Mfr. Part No. RXG21B7PV
Subtotal (1 unit)
$31.02(exc. GST)
In Stock
RS PRO 175 1M Series DIN Rail Timer Relay, 1-Contact, 240 V dc 12V ac, 240 V ac, 0.1 s to 100 h, Multifunction-Function,
  • RS Stock No. 896-6813
Subtotal (1 unit)
$93.22(exc. GST)
Temporarily out of stock
Celduc SO9 Series Solid State Relay, 40 A Load, DIN Rail Mount, 600 Vrms Load, 32V Control
  • RS Stock No. 499-0480
  • Mfr. Part No. SO963460
Subtotal (1 unit)
$100.00(exc. GST)
In Stock
RS PRO Monitoring Relay, 1 Phase, DIN Rail
  • RS Stock No. 132-174
Subtotal (1 unit)
$56.43(exc. GST)
In Stock
Finder 94 14 Way 250V ac DIN Rail Relay Socket, for use with 55.34 Series Relay
  • RS Stock No. 189-3263
  • Mfr. Part No. 94.74SMA
Subtotal (1 unit)
$25.79(exc. GST)
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