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

17381 Products showing for Relays & Signal Conditioning

861 of 870
Stocked by manufacturer
Phoenix Contact MACX Series Relay, Voltage Input, Voltage Output, ATEX, IECEx
  • RS Stock No. 517-701
  • Mfr. Part No. 1292332
Subtotal (1 unit)
PHP18,655.83(exc. VAT)
PHP18,655.83/unit
New product - Preorder today
Lovato HS3C Series Relay, 25 A Load, DIN Rail Mount, 600 V Load, 32V Control
  • RS Stock No. 820-443
  • Mfr. Part No. HS3C6HV025D024
Subtotal (1 unit)
PHP24,773.32(exc. VAT)
PHP24,773.32/unit
Stocked by manufacturer
Phoenix Contact MINI MCR Series Isolation Amplifier, Switch Input, Transistor Output, 24V dc Supply, Zone 0, Div 1,
  • RS Stock No. 517-893
  • Mfr. Part No. 1157852
Subtotal (1 unit)
PHP18,532.04(exc. VAT)
PHP18,532.04/unit
New product - Preorder today
Lovato SRA, 24V Relay, 3
  • RS Stock No. 820-480
  • Mfr. Part No. SRAMF21
Subtotal (1 unit)
PHP32,518.44(exc. VAT)
PHP32,518.44/unit
Temporarily out of stock
Weidmüller Interface Relay Module, DIN Rail, 5V Coil, 1 CO
  • RS Stock No. 577-564
  • Mfr. Part No. 8871020000
Subtotal (1 unit)
PHP1,494.62(exc. VAT)
PHP1,494.62/unit
Stocked by manufacturer
Eaton DIN Rail Impulse Relay, 110V ac Coil, 24A Switching Current, SPST
  • RS Stock No. 255-911
  • Mfr. Part No. 265263 Z-S110/S
Subtotal (1 unit)
PHP3,441.05(exc. VAT)
PHP3,441.05/unit
Stocked by manufacturer
Better World
Schneider Electric Harmony Relay RUM Series Electromechanical Interface Relay
  • RS Stock No. 256-4778
  • Mfr. Part No. RUMF33FD
Subtotal (1 box of 10 units)
PHP14,653.14(exc. VAT)
PHP14,653.14/box
Temporarily out of stock
Weidmüller TRS Series Interface Relay Module, DIN Rail, 5V Coil, 1 CO
  • RS Stock No. 600-269
  • Mfr. Part No. 1123850000
Subtotal (1 unit)
PHP1,229.08(exc. VAT)
PHP1,229.08/unit
In Stock
TE Connectivity LEV200 Series Electromechanical Interface Relay, Chassis, 48V dc Coil, SPST-NO
  • RS Stock No. 527-803
  • Mfr. Part No. 5-1618388-8
Subtotal (1 unit)
PHP15,525.68(exc. VAT)
PHP15,525.68/unit
Stocked by manufacturer
Omron G6K Series Relay, 1 A Load, Through Hole Mount, 60 V dc Load, 18V dc Control
  • RS Stock No. 680-282
  • Mfr. Part No. G6K 6011F
Subtotal (1 box of 50 units)
PHP14,755.37(exc. VAT)
PHP14,755.37/box
Stocked by manufacturer
Eaton Monitoring Relay, SPST, DIN Rail, 0A to 4A, 24 V dc
  • RS Stock No. 261-358
  • Mfr. Part No. PXS24E04A001 PXS24E-e4/F-IT
Subtotal (1 unit)
PHP3,631.10(exc. VAT)
PHP3,631.10/unit
Stocked by manufacturer
Eaton Z-TN Series Relay, DIN Rail, 230V ac Coil, 4PST
  • RS Stock No. 255-361
  • Mfr. Part No. 265579 Z-TN230/4S
Subtotal (1 unit)
PHP3,573.82(exc. VAT)
PHP3,573.82/unit
New product - Preorder today
Gefran GQ15 Series Solid State Relay, 15 Arms Load, Panel Mount, 145 Vrms Load, 32V Control
  • RS Stock No. 821-763
  • Mfr. Part No. F041186/ GQ-15-24-D-1-1
Subtotal (1 unit)
PHP3,225.88(exc. VAT)
PHP3,225.88/unit
Temporarily out of stock
Carlo Gavazzi RGC3 Series Solid State Relay, 25 A Load, DIN Rail, Panel Mount Mount, 600 V ac Load, 32V dc Control
  • RS Stock No. 729-993
  • Mfr. Part No. RGC3A60D25KKE
Subtotal (1 unit)
PHP22,423.90(exc. VAT)
PHP22,423.90/unit
Stocked by manufacturer
Finder PCB Power Relay Module, 6V dc Coil, 16A Switching Current, SPDT
  • RS Stock No. 248-1976
  • Mfr. Part No. 406190060000
Subtotal (1 pack of 50 units)
PHP27,416.30(exc. VAT)
PHP548.326/unit
Temporarily out of stock
Motrona FP Series Signal Converter, Universal Input, RS422 Output, 30V Supply, EN IEC 63000
  • RS Stock No. 719-382
  • Mfr. Part No. FP210
Subtotal (1 unit)
PHP31,329.93(exc. VAT)
PHP31,329.93/unit
Stocked by manufacturer
Eaton HLR Series Solid State Relay, 30 A Load, Chassis Mount, 660 V ac Load, 32V dc Control
  • RS Stock No. 261-570
  • Mfr. Part No. 360048 HLR30/3(DC)600V/S
Subtotal (1 unit)
PHP21,962.95(exc. VAT)
PHP21,962.95/unit
New product - Preorder today
TE Connectivity PCB Power Relay, 12V dc Coil, 30A Switching Current, 1 NC
  • RS Stock No. 787-863
  • Mfr. Part No. 1558667-3
Subtotal (1 box of 70 units)
PHP18,214.86(exc. VAT)
PHP18,214.86/box
Stocked by manufacturer
Better World
Siemens Monitoring Relay, 3 Phase, DPST, DIN Rail, 24 V dc
  • RS Stock No. 197-3312
  • Mfr. Part No. 3UG5462-1AA40
Subtotal (1 unit)
PHP129,820.68(exc. VAT)
PHP129,820.68/unit
New product - Preorder today
TE Connectivity Through Hole Relay, 5V dc Coil, 2A, 2 NO
  • RS Stock No. 788-031
  • Mfr. Part No. 1462043-7
Subtotal (1 tube of 1000 units)
PHP236,585.73(exc. VAT)
PHP236,585.73/tube
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